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dosbox-x/CHANGELOG
Jonathan Campbell 70d4d78a65 CHANGELOG
2025-05-05 08:08:14 -07:00

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Next version
- Remove mixer and VGA capture test modes from integration device. Update
integration device version number. Convert hardcoded magic constants used
in IG into constants in iglib.h which is now shared explicitly with the
iglib.h in DOSLIB. Add integration device interface to allow the guest
to read and set the CPU cycle count of the emulator. (joncampbell123).
2025.05.03
- Show TURBO status in title bar. (maron2000)
- Fixed MinGW32 builds failed using gcc15, due to a conflict in __inline__
macro. (lazka)
- Revise EGA/VGA emulation to treat the CRTC CGA/Hercules
CRTC bit remapping as bits to mask out, instead of defining
the upper limit of the memory mask. This makes the CGA mode
Engine page flipping test work. I initially had reservations
about whether or not real hardware did this, but, it would
make sense for hardware to do it that way. (joncampbell123)
- Updated libpng to version 1.6.47 (maron2000)
- Updated XCOPY to version 1.9a (maron2000)
- Updated SDL2 library to version 2.32.4 (maron2000)
- Fixed a build/install error due to using wildcards in Makefile.am, which is
not supported in GNU Automake. (maron2000)
- macOS: Install SDL2_net in CI workflow to enable internal modem support on
Release and Nightly SDL2 builds. (maron2000)
- Fixed buffer size to allocate missing byte for string terminator for
savestate filename to prevent buffer overflow (arifogel)
- Fixed settings of yellow color in COLOR command (maron2000)
- Fixed COLOR command to match behavior on Windows (maron2000)
- Fixed INT21h AH=0a cursor position moved by bell due to keyboard buffer full
(maron2000)
- Fixed INT21h AH=01 echo behavior (maron2000)
- Replaced SetPixel with DIB Section Direct Memory Access for faster printing
(DwayneSelsig)
- Fixed creation of overlay special files (zyebytevt)
- PC-98 mode: Add INT 18h function AH=10h to control cursor blink.
Emulate documented side effect in that this call also hides the
cursor. The PC-98 port of Lemmings will no longer show a blinking
black box in the lower left corner. (joncampbell123)
- Fixed Host key (F11, F12) handling in Codepage 932 (Japanese Shift-JIS).
(maron2000)
- Bumped ESFMu to ver 1.2.6 (maron2000)
- Fixed regression of adding a dot to CD labels when longer than 8 characters,
required for games such as Descent 2 CD installer (maron2000)
- Added Modeswitch toggle option (DieSkaarj)
- Fixed glitch of DBCS character at the end of a line (maron2000)
- Fixed dialog for showing error of loading language files (maron2000)
- Removed two and 226 duplicate Chinese character mappings from code
pages 950 and 951, respectively, ensuring more accurate Big5 and
Big5-UAO character mappings for Chinese IME users. (1abcd)
- Enabled changing drives mounted prior to switching to securemode (maron2000)
- Enabled some messages to be translated in the translation files (maron2000)
- Fixed fullscreen mode occasionally switched to windowed mode (maron2000)
- Updated French translation (FredBezies)
- Fixed blank screen when output=ttf on PC-98 mode (maron2000)
- Fixed crash when switching from fullscreen to window mode in TTF output
(maron2000)
- Fixed mounting zip files with white space in their names failed (maron2000)
- Fixed crash on reboot when output=ttf (maron2000)
- Fixed blank BIOS screen when output=ttf (maron2000)
- Fixed direct input of half-width kana (maron2000)
- Fixed PC-98 INT 1Fh, AH=90h source and destination address (drachen6jp)
- Fixed unnecessary trailing backslash in path name (maron2000)
- Fixed SSE MOVSS, MOVHPS, UNPCKLPS, UNPCKHPS, and PSADBW as well as
MMX PMULLW, PSUBUSB, and PSUBUSW, instruction implementations (fuel-pcbox)
2025.02.01
- Added new experimental dosbox.conf option that turns off the
A20 gate automatically if loading a COM/EXE file to a memory
location below 64KB. Option is off by default. This is intended
for the startup routines of programs that assume 8086 wraparound
to prevent them from crashing (joncampbell123).
- Bump tinyfiledialogs to v3.19.1 (maron2000)
- Fix VGA render-on-demand bug that causes all screen updates to
stop working if something changes video state without changing
any other attribute (width, height, frame rate, etc.). In
PC-98 mode this bug could be triggered by leaving the text
layer open while switching off the graphics layer when the
graphics layer is in 256-color PEGC mode. Fix for KOARMADA.EXE
when exiting back to the DOS prompt. (joncampbell123).
- In PC-98 mode, add I/O port 43Bh which guest applications can
then read to determine whether the 15MB "memory hole" is open.
The guest can use this bit to determine whether the PEGC 256-color
framebuffer is available at that location, or whether that is
just plain system memory. Added for homebrew PC-9821 project
KOARMADA.EXE which uses that bit to determine how to talk to
the framebuffer. (joncampbell123).
- Fix keyboard ISR in PC-98 mode to assume there is data waiting
from the keyboard I/O ports (then check the status for more).
The reason is that CWSDPMI.EXE for PC-98 has a keyboard ISR
of it's own that reads the scan code first (which clears the
"data available" bit) before then passing control to the
real-mode keyboard ISR. If our keyboard ISR first checks for
status in that case it will never see any keyboard data and
keyboard input will never register to the guest while running
under CWSDPMI (joncampbell123).
- Fix BIOS POST location (F000:FFF0) JMP instruction in PC-98 mode
so that the segment value of the JMP instruction matches a
specific value that the DJGPP C runtime checks for to detect
PC-98. (joncampbell123).
- Stop serving IBM PC-specific CWSDPMI.EXE in NEC PC-98 mode.
It happens to work unless any interrupt or exception happens.
Instead, provide an alternate common version of CWSDPMI.EXE
that was patched to support PC-98 machines when machine=pc98
(joncampbell123).
- Add support for ucrt64 builds (maron2000)
- DOS CTRL+C handling: Remove NULL vector check because built-in
COMMAND.COM long ago was fixed to provide a CTRL+C vector. Fix
code to use a different value for the C++ exception so that it
cannot be confused for any other common signal in the emulator
(joncampbell123).
- Remove DOSBox Integration Device VGA "self capture",
which was never used much anyway, as part of cleanup (joncampbell123).
- x86 paging: Remove unused non-"full TLB" code. (joncampbell123).
- Use mmap() to allocate system memory if available. This is
for future work that may involve something that requires
page-aligned allocation, such as KVM support in Linux (joncampbell123).
- VGA cleanup, organization (joncampbell123).
- Fixed regression of specifying DBCS fontx file was ignored. (maron2000)
- Fixed mistakes in adding double quotes to filenames to pass to IMGMOUNT
command, and syntax errors in showing a message dialog box. (maron2000)
- Fixed bug where bios memSize was not set when using TTF. (maitchison)
- Fixed CMS was always disabled regardless of config settings. (xrip)
- Switch off TTF mode in text modes not working in TTF mode. (maron2000)
- Gravis Ultrasound: Add dosbox.conf option that when enabled,
prints a warning to the log file every time the guest pokes
data into GUS RAM beyond the 1MB supported by the card,
in order to better identify errant Demoscene code and/or
any bugs in new tracker code currently in development. (joncampbell123)
- VGA: Fix buffer overrun that can occur with 4bpp planar
16-color modes if the guest writes beyond the first 2MB
of video RAM. The planar support code also copies the 3rd
bitplane to a font RAM array used in EGA/VGA text mode.
This font RAM array is only 512KB, therefore in planar
memory space, writes beyond (2MB/4) = 512KB cause corruption
of emulator state and possibly crashes. Solve the issue
therefore by not copying to font RAM beyond 512KB. (joncampbell123)
- VESA BIOS support: Fix VGA draw and bank switching code
to ensure that the guest cannot write outside video RAM
limits, and fix VBE bank switching code to consider 4bpp
planar SVGA modes properly. (joncampbell123)
- VESA BIOS support: Fix scan line and page calculations related
to 4bpp planar 16-color SVGA modes. (joncampbell123)
- VESA BIOS support: Fix 24bpp RGB bugs related to VBE calls
that control scan line length and display panning/scrolling.
Now VBETEST can test 24bpp panning without potentially giving
the user an epileptic seizure, and there are no more overlong
scanlines. (joncampbell123)
- VESA BIOS support: Correct mode information for SVGA text modes (joncampbell123)
- VESA BIOS support: Like real Pentium-era hardware, do not
list 4bpp planar 16-color modes as having a linear framebuffer.
Most SVGA cards only support planar VGA memory within the
standard VGA A0000-BFFFFh region and do not support the same
up in the linear framebuffer area. (joncampbell123)
- Save state support: Let the option to control whether or not
compression is applied, apply to the ZIP compression. If you
turn off compression, the ZIP file uses "store" mode instead,
otherwise compresses as normal. (joncampbell123)
- It turns out that for whatever reason, the savestate code was
compressing the state twice. Once by itself, and then again when
writing to the ZIP archive. Furthermore, storing the original
length at the end of the compressed data using size_t is a big
problem. Remove the extra compression/decompression and let the
ZIP file support do the compression. Save states from now on
will be marked as "No compression" for at least some backwards
compatibility. (joncampbell123)
- Volume label cleanup and fixes. Do not pad labels with white spaces. (maron2000)
- Some NEC PC-98 games that support MIDI through MPU-401 like to use
Roland GS-specific SysEx messages to control master volume and
reset the MIDI synth, instead of standard messages. These games
were known in DOSBox-X to have problems with MIDI stuck notes and
hanging notes for this reason. Added code to recognize Roland GS
reset SysEx and reissue it as standard MIDI reset, to resolve that.
Added code to Fluidsynth MIDI support to recognize the Roland GS
master volume SysEx commands and apply it to the output, which
allows these games to "fade out" the MIDI properly. PC-98 games
should no longer have hanging/stuck MIDI notes (joncampbell123).
- Fix VESA BIOS modelist mistake that marked all "high definition"
modes as modes to round bytes per line up to a power of 2 (joncampbell123)
- Fix memory size register determination for S3 Virge/VX (clbianco)
- Fixed a Y2038 bug by replacing Int32x32To64 with regular multiplication.
(CookiePLMonster)
- Fixed pasting Bell code (0x07) from clipboard was ignored. (maron2000)
- Fixed a segfault crash when pasting the content of clipboard is empty
or consists of invalid characters only. (maron2000)
- Fixed crash when trying to access MOUNTed empty physical CD/Floppy
drives. (maron2000)
2025.01.01
- Fix bug that prevented the Configuration GUI from saving to dosbox.conf
the last Windows 3.1 theme you applied using the dropdown menu.
(joncampbell123).
- Add option to apply vmemdelay to SVGA and linear framebuffer
modes (such as VESA BIOS modes), which reduces emulator performance
for those modes, but allows you to emulate slower SVGA cards.
Due to how some machine types are emulated, this option also enables
vmemdelay to affect the PC-98 linear framebuffer, Tandy & PCjr
video modes, as well as MDA/Hercules. (joncampbell123).
- Add workaround to CPU reset logic that allows it to work correctly
even with dynamic core. Previously, if the guest reset the system,
the emulator would crash with an error message about an uncaught
C++ exception because C++ exception handling doesn't work with
dynamically generated code. (joncampbell123).
- Correct CPUID family/model/brand values for cputype=pentium_iii.
Add CPUID level 2, which returns "processor configuration
descriptors", and return documented Pentium III values. Apparently
Windows XP really REALLY cares about these configuration
descriptors and will hang in-kernel in an infinite loop at bootup
without these apparently really important values. This change
makes it possible to boot Windows XP with Pentium III emulation.
(joncampbell123).
- Allow values of memsize to represent 4GB or more of RAM. Up to
1TB, if Pentium PSE extensions are enabled, the memalias setting
is 40, and "enable pse=pse40" in the conf file. Memalias maximum
is now 40, instead of 32. Add code to provide that memory above
the 4GB address mark when PSE is in use by the guest OS. Added
dosbox.conf option to specify a memory file. When specified, all
guest memory is memory-mapped from a file on disk, rather than
allocated from host memory or host swap file. To avoid consuming
too much RAM on the host, a memory file is REQUIRED to emulate
memory at or above 4GB. For best performance with the memory file,
make sure the filesystem you place it on supports sparse files,
including Linux ext4 and Windows NTFS. (joncampbell123).
- Fix EGA machine type to determine whether CGA RGBI or EGA RrGgBb
display is active by vsync polarity, instead of the length of
htotal. Several online references state that vsync is negative
for 350-line modes, including 350-line to an MDA monitor. This
also allows the "enhanced" EGA 320x200 modes in Rambo III to display
colors correctly. (joncampbell123).
- Dynamic x86 core: Reflect STI instruction to normal core so that
the 1-instruction delay is correctly emulated. This makes it
possible to run Windows XP or Server 2003 with dynamic core and
SYSENTER/SYSEXIT emulation without random BSODs (joncampbell123).
- Fix default code page. Instead of assuming 437 at all times, use
437 for all IBM PC compatible modes and 932 for PC-98 emulation.
(joncampbell123).
- Normal core: Fix STI emulation to enforce the 1-instruction delay
by forcing the normal core to execute another instruction right
away without providing any opportunity for interrupt processing.
This does not break Peret Em Heru, Keen games, and it seems to fix
the random BSOD issues with Windows XP and Windows Server 2003
when emulating a Pentium II that supports SYSENTER/SYSEXIT. I'm
not clear on why this fix prevents them from crashing, but there
you go. (joncampbell123).
- Keyboard emulation: Fix PCjr key delay to match IBM documentation
stating how long it takes to transmit one scan code, which is
obviously much slower than normal to accomodate the slow CPU and
the optical nature of the transmission. This is needed in order
for emulation to correctly send Fn+key combinations. At normal
key delay, the guest will miss scan codes and function keys will
not be reliable. (joncampbell123).
- Keyboard emulation: The 83-keyboard scan codes work differently on
the PCjr keyboard because half of them are only accessible by holding
the Fn key. The keyboard only sends the base key scan code and the Fn
key scan code and the BIOS is expected to convert that to the normal
83-key scan codes expected by DOS software. The problem is some games
like "Agent USA" for PCjr are written to directly handle scan codes
through IRQ 1 (the fact that PCjr handles keyboard via NMI and reflects
to INT 9 is ignored here). Fix this by sending scan codes that emulate
holding Fn and pressing the appropriate key. Agent USA expects the
user to press F1 by holding Fn and pressing "1". (joncampbell123).
- Revise VGA doublescan mode, vs bit 7 of the Max scanline register, to
correct how VGA doublescans 200-line modes. Revise EGA/VGA text code
to divide line by 2 in rendering to match double scanned scanlines,
so that the "graphical" text of "After the War" can render properly
for machine=vgaonly. (joncampbell123).
- INT 10: If machine=ega, check the EGA switches on INT 10h modeset.
Some games force the EGA BIOS to use CGA 200-line text modes by
modifying those bits and then setting the mode ("After the War").
(joncampbell123).
- INT 10: Fix "load font" functions to correctly recompute video
display end for machine=vgaonly and machine=ega. (joncampbell123).
- INT 10: Like any other 200-line 16-color graphics mode, 200-line
VGA text mode needs to program the AC and VGA palette using the
CGA RGBI-type palette, not the EGA 64-color type palette. (joncampbell123).
- CPU: Disallow clearing PE bit from LMSW by default, always.
You can still allow it through dosbox.conf. It turns out that
x86 CPUs never allowed you to clear it that way, even from the
Pentium up, even though Intel documentation beyond the 386 never
mentions it again. This fixes problems with DOS extenders and
VCPI, particularly DOS4GW which for some reason with VCPI likes
to try to clear the PE bit when switching to VM86 even though
it clearly understands it's not supposed to be able to clear it.
(joncampbell123).
- VCPI: It turns out the VCPI server GDT selectors are expected to
be 32-bit, because the protected mode VCPI entry point is expected
to be called as if 32-bit far pointer. Correct VCPI entry point
to return using RETF, not IRETD, which solves crashing issues with
DOS extenders. For the first time, DOS extenders are working with
the DOSBox-X built-in implementation of VCPI and most DOS games
run fine now with it. (joncampbell123).
- VCPI: Add code to INT 2Fh handler regarding Windows startup/shutdown
messages to fill in DS:SI. If EMM386 and VCPI emulation is active
and running the DOS machine in virtual 8086 mode, give Windows the
proper callback procedure to allow Windows to switch off VCPI vm86
mode on startup and turn it back on during shutdown. (joncampbell123).
- BIOS "POST" screen: Change BIOS logo to PNG format. To avoid having
to render a PNG in roughly 10 different video modes, add code to
VGA draw code to allow a BIOS logo "overlay" to be rendered
independent of the video mode. Depending on machine type load one
of four PNG files from disk or from inside DOSBox-X itself.
PNG requirements: 224x224 or smaller, bit depth of 8bpp or less,
color palette (not grayscale), no alpha channel, and must not be
interlaced. For best compatibility, use less than 64 colors, or
perhaps just 16 colors. Much like the Windows 95 LOGO.SYS, you can
change the logo to your taste by placing specifically named PNG
files in the same directory as your dosbox.conf or current working
directory. Have fun. Note that this addition requires that you
compile DOSBox-X with libpng enabled. (joncampbell123).
- Added dosbox.conf option to specify BIOS logo file. (joncampbell123).
- Added dosbox.conf option to specify a text message, up to 3 lines,
at the bottom of the screen during BIOS POST screen. (joncampbell123).
- Fix color glitches in EGA, Tandy, Hercules mode on macOS SDL2 build
(output=opengl)(maron2000)
- Add int33 mickey threshold option (Fixes Ultima Underworld) (jpernst)
- Fix configure.ac (disable-screenshot option) (maron2000)
- Fixed codepage switching when loading language file in Traditional
Chinese (maron2000)
- Fixed display of some Chinese characters (Traditional Chinese)(maron2000)
- Fixed garbled text and menubar on reset (maron2000)
- Fixed codepage switching when a language file was loaded (maron2000)
- sdlmain: Fixed crashing if no config files are found. (skitt)
2024.12.04
- Arrange memory device allocation so that it is possible to allocate
up to about 3900MB of memory instead of 3500MB. (joncampbell123).
- Fix S3 LFB PCI base alignment error if system memory pushes it
to a higher address (joncampbell123).
- Fix EGA 640x350 4-color mode (when EGA memory size is 64KB) to
display correctly. Prior to this fix, 640x350 4-color only worked
properly if the INT 10h Video Parameter Table was enabled. (joncampbell123).
- Fix S3 VGA memory size reported through register CR36 to cap at 4MB
and set the value correctly. This fixes a known issue where setting
vmemsize to 8MB caused Windows 98 to report memory size as 2.5MB. (joncampbell123).
- Fixed a problem when VZ Editor is resident in PC-98 mode. (nanshiki).
- INT 10: SVGA mode 0x6A does not exist on plain VGA hardware. (joncampbell123).
- INT 10: Fix mode 0x6A (800x600 4-color SVGA) to use a correct dot
clock so that the refresh rate is >= 60Hz instead of 37Hz, and make
sure mode 0x6A is a 100% clone of VESA BIOS MODE 0x102. (joncampbell123).
- Fix MMX/SSE instruction decoding, correct some mistakes in MMX emulation. (joncampbell123).
- IMGMAKE: Add -partofs option to allow control of where the partition
begins in the image (joncampbell123).
- IMGMAKE: Add -align option so that the FAT filesystem can be arranged
for more optimal I/O on devices with larger sectors, such as modern
4096-byte/sector drives. (joncampbell123).
- IMGMAKE: Add -label option so that the generated FAT filesystem has the
specified volume label. (joncampbell123).
- MDA emulation: Fix non-blink attributes 0xF0 and 0xF8 to correctly render
bright green background. (joncampbell123).
- Fixed crash when a CD image was loaded to an "empty" drive (maron2000)
- Log loaded .conf file (maron2000)
- Supress redundant screen reports in log (maron2000)
- Fixed mouse capture locking by middle button (maron2000)
- Fixed toggling the menu option "Autolock mouse" did nothing (maron2000)
- Fixed build failure with libc++ 19 (DimitryAndric)
- Fixed fullscreen mode not responding when launched in TTF mode
in Windows (maron2000)
- Fixed crashes when changing floppies mounted by drive numbers on
a booted guest OS (maron2000)
- Fixed launching host programs with white spaces in path (Windows)
(maron2000)
- Convert paths from relative to absolute when launching host programs
in a mounted drive (Windows) (maron2000)
- Added an option not to pause after host program execution is
completed (maron2000)
- Fixed corrupted display when loading language files at launch
(maron2000)
- Fixed Z Drive path expansion to be case insensitive (maron2000)
2024.10.01
- Allow the ".inst" extension for CUE sheets. (Allofich)
- Add SET /FIRST, a DOSBox-X extension, that takes the specified
variable if it exists and moves it to the front of the environment
block. (joncampbell123).
- SET command processing has been cleaned up and streamlined.
Added /ERASE command line switch to clear the environment
block (DOSBox-X extension). (joncampbell123).
- VESA BIOS: Add new option to adjust reported linear framebuffer
address by a specific number of pixels. This is needed by
"Out of Control" by Contract which for whatever reason,
will always draw to the LFB base minus 128 bytes. This option
makes it possible to correct the demo graphics. (joncampbell123).
- Gravis Ultrasound: Officially, registers 0x0-0xF, the voice
control registers, are documented to have a 0x0-0xF write and
0x80-0x8F read alias. Unofficially, according to the behavior
of 1997 demo "Out of Control" by Contract, all GUS registers
have a N and (N+0x80) alias, or at least register 0x4C, and
you can read them back from either index. Or else the demo
fails to detect the GUS. So add this alias, but only if
enabled in dosbox.conf. Real hardware testing is required to
know if the actual GUS behaves this way and which versions.
(joncampbell123).
- Move the INT 3 default vector to well within the initial 16
bytes of the DOS kernel, away from the List of Lists and SFT.
The previous placement caused certain versions of Windows 3.2
(yes, the Chinese version) to crash on startup. (joncampbell123).
- When using the running program to name screenshots and such,
filter out all invalid characters so that Windows users can
take snapshots even if junk characters are there (joncampbell123).
- DOS FAT driver: If INT 13h reports disk change, adapt floppy
disk geometry to new disk image according to media byte. This
allows DS_BLISS to present it's 720K fake floppy even if the
user initially mounted a 1.44MB floppy to drive A: (joncampbell123).
- INT 10 mode list: Add "pitch" parameter. If nonzero, the value
(in pixels) is how to program the pixels per scanline when
setting the mode.
- VESAMOED: Add -pitch option to control the pitch (pixels per
scanline). The intent is to work around DOS games that assume
nonstandard pixels per scanline by allowing the VESA BIOS mode
to use a different one. For example, Line Wars II has an S3
acceleration mode that uses 800x600, but for whatever reason,
assumes the video mode is 1024 pixels per scanline, and will
render garbled graphics if that is not the case. (joncampbell123).
- S3 emulation: Follow S3 Trio64 documentation and mask the Linear
Window Position bits according to the size of the memory. You
can only place it on a multiple of the memory size. This silences
warnings caused by Line Wars II which appears to modify only the
upper byte but not the lower when modifying this register, which
then leaves 0xA0 in the lower half. That lower half would be
ignored for 1MB or larger video memory sizes. (joncampbell123).
- S3 XGA emulation: Add XGA acceleration for 4bpp packed 16-color
SVGA modes. A CAD package has S3 support drivers that use the
16-color 4bpp packed modes and expects XGA acceleration to work.
(joncampbell123).
- Add "-o int13" option to IMGMOUNT to direct the FAT driver to do
all disk I/O through INT 13h instead of directly. This is intended
for certain demoscene productions that apparently like to make
files appear out of thin air by intercepting INT 13h floppy disk
I/O and then asking MS-DOS to run something from it. Hack for
"DS_BLISS" demo. (joncampbell123).
- Fixed crash when a language file is loaded on a Windows host with
US keyboard (maron2000)
- Added Added sharp-bilinear Direct3D shader (RibShark)
- Pass output dimensions to Direct3D shaders (RibShark)
- Fixed BPB of floppy images made by IMGMAKE command (maron2000)
- Fixed timestamp of volume label changed by LABEL command (maron2000)
- Fixed pathname issues when mounting differencial VHD images (maxpat78)
- Corrected relative/absolute track offset in subchannel data for
CD-ROM images (RibShark).
- Fixed particular dead keys were not working to input characters
with diacritics (maron2000).
- Enabled "Edit and Continue" option for debug builds of Visual Studio
Intel builds (aybe).
- Updated libchdr to latest (treloret).
- Fixed icon in Gnome dock bar (FredBezies).
- add option "[dos] automount drive directories" for Windows builds,
this will mount existing drive directories from C to Y drive (aybe).
- fix off-center and off-screen window after entering the
configuration tool while using TTF output mode (aybe).
- add menu item for centering window "Video/Center window" (aybe).
- Fixed update-version-number script to patch all *.iss files, not
just the specific one it did before, to ensure future releases have
correct version numbers. (joncampbell123).
- Updated Nuked-OPL3 code to nukeykt/Nuked-OPL3@cfedb09 (StevenSYS)
- Updated SDL2 library to 2.30.4 (maron2000)
- Fixed TTF mode didn't change to graphic mode when machine = Hercules
(maron2000)
- Configuration tool: (aybe)
- more Windows 3.1 look'n'feel (themes w/ host dark mode detection)
- enhance main window layout, it is now visible in its entirety
- fix layout issues, off by one in rectangle drawing functions
- fix 'list iterators incompatible' when pressing the Tab key
- properties/help: sorted alphabetically, mouse wheel scrollable
- remove few rendundant labels, adjust names of some others
- retain 'show advanced options' state throughout session
- SVN r4483: Fix compilation in Visual Studio 2008 (Allofich)
- DOSBox Staging: Decouple CMS and OPL emulations (Allofich)
- Fixed reading NEC specific character font data.(nanshiki)
2024.07.01
- Correct Hercules InColor memory emulation. Read and write planar
behavior was incorrect due to a misunderstanding of available
documentation. (joncampbell123).
- Hercules/MDA and InColor integration broke the Hercules blend mode
render, fix the render so that adjacent lit pixels are brighter
again. (joncampbell123).
- Fix "VRD" debugger command bug that didn't properly render out the
rest of the VGA display frame. (joncampbell123).
- Fixed debugger mapper shortcut bug where entering the debugger
completes the 1 ms "tick" early, effectively jumping emulator time
up to start of the next ms. This might explain the mysterious cases
where a program always fails to work unless you are debugging it.
(joncampbell123).
- Added debugger command "VRT" which resumes running the guest until
vertical retrace. Added for programmers who wish to write something
to screen and then see it show up. (joncampbell123).
- Fix IMGMOUNT, when mounting FAT disk images, to provide the DPB the
actual media id byte instead of assuming 0xF8 or 0xF0. INT AH=1Ch
should now report the proper media id byte for any floppy format,
instead of always reporting 0xF0 (1.44MB floppy). (joncampbell123).
- Allow BOOT to load and execute the boot sector of a guest OS even if
memory size is too small (in IBM PC emulation, less than 32KB of RAM).
MS-DOS 1.x of course will crash if you try that because of the
assumptions made in the boot sector, but it's there if you are feeling
adventurous or are in an experimental mood (joncampbell123).
- If memsize is 4KB, place the COMMAND.COM PSP segment in the private
UMB area instead of the normal MCB allocation chain (joncampbell123).
- DOS kernel will always allocate kernel memory from private UMB area
if memory size < 16KB, in order to continue to work (joncampbell123).
- DOS kernel will allocate from segment 0x60 instead of 0x70 if the
memory size is less than 64KB. (joncampbell123).
- files= and fcbs= default value now automatically scales according to
available conventional memory (640KB or lower) in order for memsize 64KB
or lower to free up or memory and run properly. (joncampbell123).
- dosbox.conf files= and fcbs= settings have been changed to allow
"0" as a value to mean choose a reasonable default. (joncampbell123).
- Fix bug where DOS kernel crashes on startup because of the initial
stack pointer set by BIOS startup that points past available memory
when memsize is 64KB or less. (joncampbell123).
- If minimum mcb free is not set and memory size is less than 256KB,
automatically set minimum mcb free to minimum mcb segment, in order
to release more available memory within the limited space (joncampbell123).
- Do not enable XMS emulation if system memory size is 1MB or less. (joncampbell123)
- DOS drive cache: When listing a directory, defer the filename sort until
the entire list is built. This improves directory listing performance
in directories with many files. (joncampbell123).
- INT 10h, if instructed, will now use the video parameter table to set
standard VGA modes instead of internal logic. (joncampbell123).
- Removed erroneous VGA display compensation code for certain EGA/VGA
registers that really only caused incorrect display of the EGA 640x350
4-color mode. (joncampbell123).
- Corrected EGA and VGA video parameter tables by copying the parameters
from actual IBM EGA VGA ROM BIOS images. They should be 100% correct
now. (joncampbell123).
- Corrected register values and video rendering of machine=EGA 640x350
mode when emulating 64KB of RAM. This should fix rendering and display
issues with EGA 640x350 4-color emulation. Also corrected INT 10h
character printing functions to filter the color attribute value for
640x350 4-color mode so the DOS prompt does not have alternating
colors, in the same manner the real IBM EGA BIOS does. (joncampbell123).
- Fix BIOS screen to use CGA 640x200 2-color mode if machine=ega with
less than 128KB of video ram, or machine=ega200, instead of showing
a garbled 640x350 display. (joncampbell123).
- Fix memory buffer overrun with machine=ega that can occur with
640x350 mode and less than 256KB of video RAM. (joncampbell123).
- The DOSBox clipboard API (via INT 2Fh) is now disabled by default, because
some programs use it's presence to detect whether they are running under
Windows. This fixes a program where Norton Desktop 1.0 does not use it's
"graphical" text UI elements because it thinks it's running within a
Windows DOS box. (joncampbell123).
- Remove unnecessary and useless Win32 fcntl() on some memory typecast
to int which is causing a segfault whenever a ZIP file is mounted
as a drive with an overlay filesystem atop it. (joncampbell123)
- Update caption control feature to use equivalent APIs on Mac OS. (joncampbell123)
- Add dosbox.conf and menu option to control whether the DOSBox-X window
can be seen in screen captures in Windows 7/8/10/11. Windows 11 "Recall"
is very concerning and users might not want their DOS gaming to be
part of it's memory. (joncampbell123).
- Correct EGA switch readback from port 3C2h to reflect a value of 0x8
instead of 0x9 when machine=ega200 (joncampbell123).
- Correct BIOS data area value that holds the "EGA switches" to reflect
200-line EGA "emulation" when machine=ega200. Value 0x08 instead of 0x09
(joncampbell123).
- Correct mode parameters for CGA 640x200 2-color mode when using
machine=ega200 so that it displays correctly. (joncampbell123)
- DOS kernel: Remove fixed hacks for SFT and dynamically allocate the
second SFT table for the last N - 5 file handles. Add code to zero
SFT table memory to ensure that random data doesn't cause issues.
Windows 3.1 is still perfectly fine with it, so the SFT table update
and cleanup is complete. (joncampbell123).
- DOS kernel: Move the magic "CON" strings into the first SFT and
mimic the 5 default open file handles that every DOS process starts
with: CON CON CON AUX PRN. Windows 3.1 is still happy with it, which
is good. (joncampbell123).
- DOS kernel: Put the CON driver somewhere else because allowing it
to overlap the SFT is messy. Fix SFT generation to match the way that
MS-DOS 5.0 does it where the first table is always 5 entries and the
second table is always N - 5 entries. Cleanup the DOS memory allocation
a bit. So far, Windows 3.1 doesn't have a problem with it. (joncampbell123).
- DOS kernel: Interrupt handler IRET was accidentally placed within
the SFT table, move it up to resolve the conflict. (joncampbell123).
- Local DOS drive support: On Windows, if the guest is attempting to
create a hidden file, make sure to call the right APIs to create a
hidden file on the host. Not only is this needed to create a hidden
file, but if the guest tries to create a hidden file and the file
already exists as a hidden file, the file creation needs to succeed.
Fix for "Facts of Life" by Witan because the demo creates a hidden
WITAN.92 every time it is run (joncampbell123).
- XMS: Add dosbox.conf option to XMS driver to switch on flat real mode
when a) the XMS driver initializes and/or b) when the XMS driver is
called on to move/copy memory. (joncampbell123).
- INT 21h: If a DOS program frees a memory block, and then resizes the
freed memory block, reassign ownership of that block to the program
as if allocated. This is apparently canonical MS-DOS behavior. Added
dosbox.conf option to control whether resizing a freed block silently
assigns ownership (default setting) or whether it returns an error.
DOS resize memory function for the most part DID assign ownership but
not in the case where the size of the MCB was exactly the size requested
to resize to. (joncampbell123).
- Sound Blaster: Fix bug where "force autoinit" prevented Sound Blaster
playback from working at all, fix for "Jump" by Public NMI (joncampbell123).
- Debugger UI now shows PIC_FullIndex() and whether or not the CPU is
in the HLT state. Single stepping does not do anything when the CPU is
in the HLT state, so at least let the user know (joncampbell123).
- Keyboard controller (IBM PC): Cancel the IRQ signal upon reading I/O
port 60h. The reason for the IRQ, the pending data, was just read, so
now there is no point in keeping the IRQ signal up. This fixes Escape
key problems with "Cronologia" by Cascada that causes part 3 "Time"
to immediately exit and continue to the credits. Part 1 and 2 are not
affected by the pending IRQ because those parts mask IRQ 1 and poll
the keyboard controller directly. (joncampbell123).
- Fix complexity test code to determine when Odd/Even mode is enabled
in all cases and to resolve a problem with garbled scrolling text
in the "Vectorballs" part of "Unreal" (joncampbell123).
- M_EGA display mode now applies CRTC BYTE/WORD/DWORD shift to display
start address, same as M_VGA, to ensure correct display when demos
and games set the CRTC to non-BYTE modes. This fixes page flipping
flickering during the "Vectorballs" part of "Unreal" by Future Crew.
(joncampbell123).
- Update Configuration GUI to use radio buttons for selection, meaning the
circular buttons that resemble those in Windows, not the check boxes.
The GUI toolkit had them all along, the Configuration GUI was using
check boxes for that for some reason. (joncampbell123).
- Linux ALSA MIDI output: Any attempt to send RESET or other Fx commands
to the ALSA library causes a segfault in the ALSA library. Revise the
code to send without crashing. (joncampbell123).
- Linux ALSA MIDI output: Add code to list and enumerate the MIDI sequencer
devices available so the user can use it to determine what magic numbers
to put into the midiconfig setting, especially if the user wants to send
MIDI to an external synthesizer. (joncampbell123).
- Suddenly Mac OS 14 and XCode consider the "id" and "int" datatypes
different and assigning or returning one to the other is now a compiler
error. Add typecast to enable compile on latest XCode. (joncampbell123)
- INT 33 mouse emulation: Add dosbox.conf options to force a specific
coordinate system for the DOS game with respect to host/guest mouse
cursor integration (getting the DOS cursor to match the host cursor
within the window). Add dosbox.conf option where additional adjustments
are available. The maximum x/y and max-adjust options are ideal for
Lemmings 2, which uses INT 33h in a way that confuses the automatic
range detection code used to synchronize cursor position and therefore
needs this option, and the first Lemmings as well. (joncampbell123).
- PIT timer: Fix restart_counter(), the delay computation was completely
backwards. This is particularly important where it concerns programs
that use the PIT to detect the rate at which the Pentium time stamp
(RDTSC) advances as the previous code caused wildly inaccurate measurements
and bad timing (GRUB bootloader, the Microsoft CD-ROM boot "press a key
to boot from CD" message). (joncampbell123).
- IDE: Make sure to set feature/error register to 0x01 when the guest
soft or hard resets the IDE devices through the controller. The Linux
kernel uses a soft/hard reset on startup to detect PATA devices and
if it does not see the correct value after reset, it will either ignore
the device or complain about diagnostic failure and cautiously talk to
the primary IDE hard drive while ignoring any ATAPI CD-ROM emulation.
This allows the Linux kernel to boot and see the CD-ROM drive. (joncampbell123).
- IDE: Do not clear registers unnecessarily when finishing IDENTIFY DEVICE.
- The BOOT command now supports El Torito "no emulation" booting from a
CD-ROM drive, which is needed to boot install CDs for Windows XP, Linux,
etc. or Linux-based live CDs. Note that at this time, BOOT only supports
"no emulation" and IMGMOUNT only supports "floppy emulation" (joncampbell123).
- INT 13h extensions: If a read was interrupted by an error, update the
block transfer count so the caller knows (joncampbell123).
- DOS: Move version parsing farther up, so that the initial DOS version
can affect memory layout and tables as needed. (joncampbell123)
- DOS DPB and FAT driver: If the DOS version is 4.0 or higher, write a
DOS 4.0+ compatible DPB structure (as DOSBox-X already has been doing
since forking from DOSBox). If the DOS version is lower than 4.0,
write an MS-DOS 3.30 compatible DPB structure. This allows Popful Mail
to run without getting into an infinite loop scanning the DPB linked list
when [dos] section ver=3 30 (MS-DOS 3.30), aside from the fact that the
game will also run without this change if you set ver=4 0 since the game
appears to be aware of the change in structure between MS-DOS 3.30 and
MS-DOS 4.0, though for whatever reason the game refuses to run on
MS-DOS 5.0 or higher. (joncampbell123).
- IDE: Silently ignore SET FEATURES command 0x03. Any negative response
to feature 0x03 causes the Linux kernel to reject the IDE device.
(joncampbell123)
- Add support for PIT timer 0 mode 4. Linux kernel 6.1.29 compiled in
"tickless" mode uses mode 4 instead of mode 0 as a delay timeout. Prior
to this fix, the Linux kernel would switch into tickless mode and then
nothing would happen because IRQ 0 would never fire again. See also Linux
kernel source code, drivers/clocksource/i8253.c function pit_set_oneshot()
to see what I mean. (joncampbell123)
- Windows 95 S3 driver behavior suggests that S3 16-color VESA modes
0x202 to 0x208 are NOT planar modes, but packed modes. Change modes to
M_PACKED4 and update modelist building to allow that range even if the
dosbox.conf is configured not to list 4bpp packed VESA modes. This fixes
Windows 95 S3 driver 16-color modes 800x600, 1024x768, 1280x1024.
Noted: Windows 95 is the last version of Windows to support 4bpp packed.
Windows 98 and higher refuses to support it and the Display settings
will not allow you to select any 16-color mode other than the stock
VGA 640x480 16-color planar mode. (joncampbell123)
- Add --load-seg option to BOOT in case any PC-98 game boot floppy expects
to be loaded somewhere other than the default. PC-98 game "Private School
Adventure" will crash if loaded to segment 0x1FC0 but runs fine if booted
with --load-seg 0x0FC0 instead. (joncampbell123)
- Add dosbox.conf option to direct the EMS page frame segment, in a limited
fashion, though only effective for PC-98 mode. PC-98 segment is still
0xD000 by default, but apparently there are games that require the EMS
page frame to exist at 0xC000. For these games, you can now set under the
[dos] section "ems frame=C000". (joncampbell123)
- Restored libslirp support for 32-bit MinGW CI builds which was temporarily
dropped in 2024.03.01 release. Also since MinGW plans to gradually phase
out 32-bit support, added code to manually build on our own. (maron2000)
- Fixed build errors of Windows installers. Windows Vista support for standard
installer is dropped to fix this issue. Vista users can either use the XP
installer or portable builds instead. (maron2000)
- Fixed compile error of speexdsp/fftwrap.c on gcc-14 (maron2000)
- PC-98: Fixed US keyboard support for tilde (Shift+grave) key (maron2000)
- Fixed DOSBox-X freezed when codepages regarding EGA18.CPX were set (maron2000)
- Fixed CUE sheets of GOG games were rejected. Still requires "-t iso" or
"-t cdrom" option for uncommon file extensions except ".CUE". (maron2000)
- Added loongarch64 support (donmor)
- Disable FP exceptions in a portable way (xry111, donmor)
- Added "*.ccd" in file open dialog (maron2000)
- Added CI builds for ARM mac (maron2000)
- Bump tinyfiledialogs to ver 3.17.4 (maron2000)
- Obtain geometry info of non-standard sized floppy from BPB (maron2000)
- PC-98: Implemented int 18h ah=47h,48h,49h (nanshiki)
- Added breakpoint type "Freeze memory" (Enmet)
- Implemented seeking in MSCDEX
(Imported from dosbox-staging/dosbox-staging#3516 authored by weirddan455)
- Fixed built-in COPY command failed to obtain free space when reported DOS
version is set to 7.1 (maron2000)
- Fixed some file extensions in the filter list were ignored in the file open
dialogs (maron2000)
- Fixed mounting a non-FAT VHD image (maxpat78)
- Fixed VHD geometry detection (maxpat78)
- Fixed issue that IMGSWAP command did not work for CD drives. (maron2000)
- Fixed loaded language file unexpectedly changes on launch. (maron2000)
- Fixed reported size issues in builtin DIR command (maxpat78)
- Added missing language file in Windows standard & XP installers. (maron2000)
- Fixed a bug in IME character display on macOS Sonoma (nanshiki)
- Fixed build errors of SDL1 code when built with gcc-14 (maron2000)
- Fixed static link errors of libslirp >= 4.8.0 (maron2000)
- PC-98: Added MEM command for PC-98 mode (maron2000)
2024.03.01
- If an empty CD-ROM drive is attached to IDE emulation, return "Medium Not
Present" instead of a read error, when asked to read. (joncampbell123).
- Add "empty drive" CD-ROM image type "IMGMOUNT e: empty -t iso" as a way
to emulate an empty CD-ROM drive with no disc in the drive. (joncampbell123).
- Add "empty drive" floppy image type "IMGMOUNT 0 empty -t floppy -fs none"
as a way to emulate a floppy drive with no disk in the drive. (joncampbell123).
- Video debug overlay: Fix mouse integration misalignment when the video
debug overlay is enabled while Windows is running (joncampbell123).
- Video debug overlay: Fix segfault when enabled with 15/16bpp SVGA modes.
(joncampbell123).
- Video debug overlay: Fix bug where video debug failed to appear in SVGA
15/16/24/32bpp display modes because of a design where the VGA drawing
code points directly at video RAM except when drawing the hardware cursor.
One symptom was that the video debug info on the side failed to appear at
all, unless running in Windows and only within the vertical range of the
mouse cursor. (joncampbell123).
- Video debug overlay: Do not bother showing the Attribute Controller palette
in 15/16/24/32bpp SVGA modes because it doesn't matter there and is not
involved with how anything is displayed. (joncampbell123).
- Video debug overlay: Fix debug info text to appear for 15/16/24/32bpp SVGA
modes. (joncampbell123).
- BOOT --bios no longer triggers a system reset VM event, but instead just
jumps to the new BIOS image after DOS kernel shutdown. This is needed for
hardware and resources to stay as they were when running the BIOS i.e.
keeping any IDE devices configured within the DOS kernel intact so that the
BIOS can find and use them. Prior to this change, all hardware was fully
reset and unmapped prior to running the BIOS which made IDE emulation
unusable with BIOS images. (joncampbell123).
- BOOT --bios no longer immediately loads the new BIOS into memory, but instead
loads and stores the image to a temporary buffer. The ROM image does not
actually get mapped in until the DOS kernel and everything else has had a
chance to shut down fully. (joncampbell123).
- Fix BOOT --bios not to try to load PC-98 ITF firmware unless actually running
in PC-98 mode (joncampbell123).
- Write PC-98 keyboard translation table (non-shifted) in ROM BIOS and set the
keyboard translation table pointer in the BIOS data area for "Nut Berry".
This Nut Berry game also assumes lookup and translation tables exist at
specific locations in the ROM BIOS, so put those tables there. The shift
state table in BIOS has also been added, though at the moment, the tables
are incomplete. (joncampbell123).
- MegaZeux from the MS-DOS days had a 256-color tweakmode that worked on some
popular SVGA chipsets of its time though on others it does nothing but halve
the display resolution of text mode. The basic idea is that it makes the VGA
card latch two 4-bit outputs of the VGA text mode into one 8-bit value, thus,
256 colors possible. Add support for this. However I am not sure whether this
tweakmode is supported by S3 chipsets, so it is OFF by default and you will
need to add "enable supermegazeux tweakmode=true" to the [video] section of
your dosbox.conf to enable it. (joncampbell123).
- Undo the "no partition offset" change. DOOM II for PC-9821 requires it to work
else the page flipping fails and sprites and rendering flickers as you play.
(joncampbell123).
- Allow text layer to appear in PC-98 256-color mode. Even though I was unable
to enable it on real hardware, "Shamat, The Holy Circlet" requires having
the text layer visible on top of 640x400 256-color mode for the introductory
scrolling text to appear on screen. So for now, just allow it. (joncampbell123).
- The reason some PC-9821 games have been giving bad PITCH values (double the
correct value) to the GDC in 256-color mode has been determined. They read
port 9A0h to determine if the GDC is running at 5MHz or not. That port 9A0h
index was not implemented and therefore gave the game the impression it was
running at 5MHz when it was not, therefore the doubled PITCH value. This fix
corrects the squeezed 256-color mode and allows it to appear properly.
(joncampbell123).
- IMGMOUNT: If the file extension is HDI, assume a hard disk image even if the
image file is small enough to qualify as a floppy disk image. There is an
HDI image of PC-98 game "D.O. Doki Doki Disk 8" that is 2.2MB, small enough
to be mistaken as a 2.88MB IBM PC floppy disk and therefore fail to mount
as an HDI image, this change fixes it. (joncampbell123, maron2000).
- Emulate PEGC PC-98 linear framebuffer at both 0xF00000-0xF7FFFF (at 15MB
memory mark) but also make it appear at top of memory below BIOS (normally
at 0xFFF00000-0xFFF7FFFF). Some 32-bit PC-9821 CD-ROM MS-DOS games assume
the top of memory alias and will fail to show anything on screen without
it (unless, alternatively, the memalias setting is set to emulate 24 address
lines like a 386SX). Now to figure out why these same games are programming
a GDC PITCH value that's double what it should be... (joncampbell123).
- PC-98 GDC scan offset no longer pays attention to scan offset of data
partition in 256-color mode. Required to help fix broken 256-color graphics
for some PC-98 CD-ROM games. (joncampbell123).
- Refuse to enable ISA 15MB-16MB memory hole if memalias is set to 24 bits or
less. Not only is it redundant to do that but it also causes the BIOS to
immediately crash on startup. (joncampbell123).
- IDE ATAPI CD-ROM emulation: In PC-98 mode when emulating a NEC CD-ROM drive,
also limit sector reads to one CD-ROM sector per DRQ because the MS-DOS driver
assumes that behavior. The driver will stall and error out if it requests a
multi-sector read and the drive does NOT limit transfers to one sector at a
time per IDE data transfer. This is in line with my experience writing the
DOSLIB IDE testing program and laptops from the 1990s with IDE ATAPI CD-ROM
drives, so it's understandable. (joncampbell123).
- The reason the CD-ROM driver in PC-98 game HDI images refused to talk to our
IDE CD-ROM emulation is... (drumroll) we didn't report ourself as an NEC
CD-ROM drive when given the MMC INQUIRY command. Yes, really. The OAK CD-ROM
driver in these HDI images really does care whether or the drive is an NEC
brand drive. What a stupid reason not to talk to a CD-ROM drive. Add code to
default to "NEC" "CD-ROM DRIVE" as the INQUIRY result if running in PC-98 mode.
(joncampbell123).
- Add basic rudimentary support for CloneCD (*.ccd *.img) images. It might not
work with more complex arrangements but it is enough for most CD-ROM PC-98
games so far. (joncampbell123).
- libpng supports the pHYs PNG chunk which describes the pixel aspect ratio of
the PNG image. libpng 1.6 has it, use it. Programs that support the information
like FFMPEG will then display the PNG image with the correct aspect ratio.
(joncampbell123). [https://github.com/joncampbell123/dosbox-x/issues/4754]
- PC-98 mode: There is a 302KHz timer behind I/O ports 5Ch/5Eh that some MS-DOS
drivers depend on for timing, particularly a popular IDE CD-ROM device driver
in many PC-98 game HDI images. This change allows the driver to time out after
about 5-10 seconds instead of an infinite hang. (joncampbell123)
- Fix INT 10h to keep hardware CRTC I/O port synchronized with BIOS DATA area
copy so that other parts of INT 10h called by SetVideoMode do not accidentally
talk to the wrong I/O ports. This fixes corrupted INT 10 Mode F display
(640x350 monochrome graphics mode). (joncampbell123).
- Add DOS Int21 0x5D 0x00 - remote server call
Inspired by FeeDOS inthndlr.c
With this change it is possible use a plain dosbox-x to install and run
Windows for Workgroups V3.11 as an IPX server on the pcap ne2000 interface
offering a host directory for read and persistent write access to an
MSDOS machine running a WfW 3.11 IPX network client.
Please don't forget mounting with -nocachedir
(Issue #4162)(Yogi-baer)
- Fix missing keystroke SDLK_LESS on DE keyboard on Raspbian OS (Yogi-baer)
- Fix crash when loading a language file without existing menu item "ttf_extcharset" (Yogi-baer)
- Change ISA memory hole 512kb option from boolean to true/false/auto. (joncampbell123)
- Add ISA memory hole 15mb option, make it true/false/auto.
Auto means off for IBM compatible mode and on for PC-9821 compatible mode.
This should allow some DOS games that depend on the linear framebuffer
to work properly even if memsize=16 or higher. (joncampbell123)
- MIDI: set minimum sysex delay when enabled (mistydemeo)
- International support in LABEL, COPY, DEL builtin commands (maxpat)
- Fix palette setting bugs due to SETCOLOR fix in 2023.10.06 release. (maron2000)
Graphical glitches in Ultima VI(#4507), Chessmaster 3000(#4510), Wizardry VII(#4534)
Crash Sid Meyer's Civilization I (#4511)
TTF color settings regarding 'colors' option (#4579, #3318) and some more
- Fix crash when mounting floppy/ISO images with no extension (maron2000)
- Fix Intel macOS CI builds crashed on startup due to missing dylibs
(Issue #4438)(maron2000)
- Fix TTF mode didn't switch to graphics mode on certain types of machines
such as tandy/pcjr.(Issue #4559)(maron2000)
- Fix crash on switching to fullscreen when output=opengl (Intel macOS) (maron2000)
- Update DXCapture shell command to support /O for OPL capture (AranVink)
- Fix floppy images lock bug (maxpat78)
- Fix type of return value at bool MountFat() (jg1uaa)
- Fix VHD geometry bugs by performing MBR analysis (maxpat78)
- Change maximum number of joystick buttons allowed by the mapper (mattcaron)
- Enable Win9x support on a Pentium3 PC (crazii)
- Add PC98 image extensions in file open dialogs (maron2000)
- Fix input in configuration tool (SDL2) (maron2000)
- Reduce warnings by replacing sOffset (use offsetof) (jg1uaa)
- Fix LFN functions (nanshiki, SmileTheory)
Fixed a bug in which 2 extra bytes were copied to the buffer (ax=714eh,714fh).
Fixed wrong value of date/time etc. in file information (ax=714eh,714fh,71a6h).
Fixed date/time conversion to be correct (ax=71a7h)
Report correct file size on win32 when file is open (ax=71a6h).
- Fix C++11 uncompliant codes (midi_alsa.h, gamelink.cpp) (maron2000)
- Consider function key display in MORE command (PC-98) (maron2000)
- Add support for J-3100 video mode 75h (nanshiki)
- Reflect drawing status bit of GDC status I/O port (PC-98) (nanshiki)
- Re-enable top line dimming when focus is lost in fullscreen (TTF mode) (maron2000)
- Fix PC98 mouse counter value range to unsigned value (0-255) (nanshiki)
- Added function for int DCh cl=10h ah=0Ah to 0Eh (nanshiki)
- Added escape sequences (ESC[0J ESC[1J ESC[0K ESC[1K ESC[2K ESC[nL) (nanshiki)
- Fixed behavior of Kanji character output at the right edge of screen (nanshiki)
- Fixed Media ID was being written to an incorrect location in DPB (nanshiki)
- Refined version info (maron2000)
- Added PC-98 NEC mouse functions in INT33h (nanshiki)
- Bump Nuked-OPL3 code to commit 730f8c2 (13 Nov. 2023) (maron2000)
- Enabled OPL pass-through code (oplmode=hardware)(dbjh)
- Fixed crash on startup due to SDLnet library linked externally (macOS) (maron2000)
- Changed PC-98 floppy boot behavior when Drive 2 is mounted before Drive 1(maron2000)
- Added Human68k ver.1.0&2.0 floppy disk support (maron2000)
- Fixed attribute copy behavior of FreeDOS XCOPY.exe to match genuine DOS (maron2000)
- Added Russian translation (Lartenik)
- Fixed COPY/XCOPY command fails to recognize 2GB+ free disk space (maron2000)
- Enable FONTX2 files in PC-98 mode (nanshiki)
- Fix codepage switching when loading lang files (maron2000)
- Add missing quotation marks in vcxproj (bredbored)
- Fixed BPB detection of PC-98 floppies (maron2000)
- Changed sequence to boot with drive numbers when booting from image (maron2000)
- Added force JIS (JP106) keyboard layout option in PC-98 mode (maron2000)
- PC-98: Enable mounting partitions with non-genuine IPL entry names (maron2000)
- Added support for XDF disk format (maron2000)
- Added ESFM emulation (ESFMu v1.2 core) (Kagamiin)
- Added support for ESS "ESFM" sound synthesis (oplemu=esfmu, oplmode=esfm) (Kagamiin)
- Added experimental/WIP support for the ESS ES1688 sblaster type (sbtype=ess1688) (Kagamiin)
- Delete obsolete information regarding "INTRO SPECIAL" option (maron2000)
2023.10.06
- Add "VRD" debugger command to force redraw of the VGA screen. (joncampbell123)
- Add VGA debug set commands to force a video start address and another
to clear all debug settings. (joncampbell123)
- Add "PITSYNC" option to VFRCRATE command. "VFRCRATE PITSYNC ON"
directs the system timer interrupt to synchronize tick rate with
vertical refresh rate of VGA emulation if the game or demo set
the timer tick rate to a value close enough to vertical refresh.
This is intended for games or demos that use the system timer for
a vsync interrupt. (joncampbell123)
- IMGMAKE: Fix bug where if -bat was specified, the generated .bat
file would attempt to mount the .bat file, not the disk image. (joncampbell123)
- IMGMAKE: If -nofs and -bat was specified, the generated .bat file
will refer to "IMGMAKE 2" instead of "IMGMAKE C" (joncampbell123)
- DOS FAT driver: When the guest sends in a new BIOS Parameter Block,
recalculate the disk locations and FAT type properly instead of
assuming that FORMAT.COM is using the same format already present. (joncampbell123)
- DOS FAT driver: If the partition is unformatted and looks as if
freshly written by FDISK, then instead of failing to mount, mount
the partition instead as an unformatted partition and fail file
I/O until a BPB is set and the partition formatted by FORMAT.COM.
This matches MS-DOS behavior and it makes it possible to mount an
image, FDISK it, restart, FORMAT.COM the unformatted partition,
and end up with a working drive letter (just like MS-DOS). So far
verified against MS-DOS 6.22 and Windows 98 versions of FDISK,
FORMAT, SYS, and SCANDISK. (joncampbell123)
- DOS FAT driver: Add options -o sectoff and -o sectlen to make it
possible to manually specify the start and length of a partition.
Future code will use this internally as well. (joncampbell123)
- IMGMOUNT: Allow *: as a drive letter to mean automatically pick a
drive letter. (joncampbell123)
- Fix debugger to use toupper(), but only for ASCII range ncurses
keycodes. (joncampbell123)
- Timer PIT: If the guest writes the counter value while the counter
gate is off, make sure the counter read back is the same value
written regardless of gate status. Prior code returned the stale
latched value of the counter as it was prior to shutting off the
gate and writing the counter, causing timing issues. (joncampbell123)
- Fix restoring minimized window on TTF output (Issue #4248) (maron2000)
- Fix macos crash on launch when output=surface or auto (SDL2) (maron2000)
- Update in-tree SDL2 library to ver 2.28.2 (maron2000)
- Updated build tool for MinGW lowend builds required for the updated SDL2
library. As a result, MinGW lowend builds are now able to enable debugger
features. (maron2000)
- Debugger RUN and RUNWATCH commands were broken, fix. Make sure debugger
shortcut triggers execution to stop whether in RUN or RUNWATCH mode.
- Fix SETCOLORS command didn't change color when output=ttf.(Issue #4503)
Also fixed the values reported were wrong. (maron2000)
- BIOS CMOS date/time functions will now idle the CPU 4 times after reading
or setting the clock to allow interrupts, CPU time, and RTC clock ticks
to proceed normally. This fixes "Pizza Tycoon" and allows it to continue
past the initial logo. (joncampbell123)
- Fix segfault when mounting hard disk images with no file extension
(joncampbell123).
2023.09.01
- Disable by default message confirmation after snapshot and AVI video
capture, but leave the option there for those who want to enable it (joncampbell123).
- Remove "LOG: Logging output has been disabled." output when -nolog
is specified on the command line (joncampbell123).
- Fix stuck Ins key problems by fixing a typo in src/ints/bios_keyboard.cpp.
The code is supposed to clear the "Ins key down" flag, but instead cleared
all bits EXCEPT "Ins key down" (joncampbell123).
- NE2000 macaddr default is now "random", which instructs the NE2000
hardware at startup to pick a random MAC address. (joncampbell123).
- IPX: If NE2000 and IPX are enabled, and an IPX tunneling connection is
active, and the user boots a guest OS, switch on a mode where all IPX
packets going to and coming from the guest are re-routed through the
IPX tunnel instead of to the NE2000 ethernet backend. This feature
makes it possible to play IPX-based games in a guest OS like MS-DOS
and Windows 95. (joncampbell123).
- IPX: Add extension to server to allow clients to register their own
MAC address instead of using the default MAC address given by their
IP address and port number. The extension is designed so that if DOSBox-X
is a client to another DOSBox fork's IPX tunneling server, it will
be ignored and DOSBox-X will get the usual MAC address instead. This
extension is required for guest OSes to be able to use the IPX protocol
through the NE2000 card given upcoming code changes as they normally
use the network card MAC address when picking an IPX address because
the IPX interface is not available once booted into a guest OS. (joncampbell123).
- IPX client: If both IPX and NE2000 emulation are enabled, IPX emulation
will use the NE2000 card's MAC address instead. It will use the IPX
server DOSBox-X extension to try. If it doesn't work, then the normal
MAC address assignment is accepted without complaint. (joncampbell123).
- NE2000: Add "nothing" backend. It receives nothing and send packets go
nowhere. If no other backend is available, this backend is a fallback
so that at least the NE2000 emulation can work. The other purpose of
a nothing callback is to give NE2000 something to talk to for those
who wish to use the upcoming IPX packet redirection to link DOS and
Windows games over the IPX client or server connection to other
instances of DOSBox. (joncampbell123)
- Added record function to capture NE2000 network traffic to a
pcap/Wireshark file in the capture directory. (joncampbell123)
- Fixed bug where guest VM reset causes the CMOS to stop ticking for
exactly the amount of time it was running before reset. (joncampbell123)
- Added alarm interrupt function to RTC CMOS emulation (joncampbell123)
- Reverted DOS to using the BIOS_DATA tick count for time and the cached
copy of date it keeps internally, rather than always calling INT 1Ah.
It turns out that is how DOS actually behaves, which is also why it is
possible for the DOS and CMOS RTC to diverge. Fix CMOS emulation to
allow get/set time and to run in emulation time, not real time, though
the clock starts from the host time. (joncampbell123)
- Fixed VHD disk image calculation of footer position and, thus, of newly
allocated block position. (maxpat78)
- Enhanced Dynamic and Differencing VHD support #4273 (maxpat78)
- Imported IBM Music Feature Card support from DOSBox Staging. (Allofich)
- Fix IMGMAKE large size image error on MinGW builds (maron2000)
- Set usescancodes=true when non-US keyboards are detected. (Linux / MacOS
builds) (maron2000)
- Fix day of week detection (INT 21h function 0x2Ah). (maron2000)
- Refine KEYB and CHCP command (maron2000)
- Use segment descriptor's big flag (if present) when disassembling code in
the debugger code view (cimarronm)
- Add decoding of rdmsr/wrmsr instructions to disassembler (cimarronm)
- Fix disassembly for far jmp/call decoding (cimarronm)
- Fix memory limits on expand-down segment descriptors (cimarronm)
- Bump tinyfiledialog to ver 3.13.3 (maron2000)
- Fix mouse column limit on text mode (issue #4353) (maron2000)
- Fix Blocek launching failure (issue #4385) (maron2000)
- Bump in-tree FreeType library to ver 2.13.1 (maron2000)
- Enable debugger function for MinGW builds (maron2000)
2023.05.01
- IMGMAKE will choose LBA partition types for 2GB or larger disk
images, but the user can also use -chs and -lba options to override
that choice. The CHS or LBA partition types do matter because it
affects which version of INT 13h is used by Windows 98/ME to boot up
and, if drive C: is in compatibility mode, at all times. (joncampbell123)
- PC-98 256-color mode will also trigger the auto mode of "render on
demand" for performance reasons because per-scanline raster effects
are very unlikely in that case, as will MDA and Hercules machine
types. (joncampbell123)
- When the DOS IDLE API is enabled (by default), limit STI+HLT to
occur on INT 28h only once after any call to read the CON device
or call to BIOS INT 16h to read the keyboard. This fixes stalls
and sluggish input problems with programs that like to call INT 28h
often like the Pacific C compiler PPD IDE interface. (joncampbell123).
- Hercules InColor machine type: Fixed attribute and RAMFONT handling
of 48K RAMFONT mode and added planar text rendering. (joncampbell123).
- Write BIOS data area fields for number of rows, char height, etc.
for MCGA machine type in addition to EGA/VGA machine types because
IBM technical references suggest it's there for MCGA as well.
This also resolves an issue where with the MCGA machine type, INT 10h
failed to print any text to screen whatsoever. (joncampbell123).
- Render on demand (Staging calls it "lazy rendering") now defaults
to "auto" and allows an "auto" setting. The auto setting will
turn it off for standard VGA modes and will turn it on for SVGA
modes where per scanline raster effects are very unlikely to
occur. This may provide a performance boost for DOS games in SVGA
modes and the Windows desktop (joncampbell123).
- CGA 320x200 4-color mode is now rendered using the M_EGA render
code for EGA/VGA machine types to better reflect real hardware.
(joncampbell123).
- Fix bug where setting doublescan=false for anything other than
the VGA machine type would break CGA graphics modes.
(joncampbell123).
- Fix video debug overlay calculations of source video mode for
CGA graphics modes. (joncampbell123).
- CGA 640x200 2-color mode and MCGA 640x480 2-color mode are no
longer rendered as M_CGA2 for EGA/VGA machine types. The reason
is that at the hardware level they are really just IBM standard
tweaked versions of the EGA/VGA 16-color modes with additional
bits for the interleave emulation and can be properly emulated
with the M_EGA renderer. M_CGA2 is still used for the CGA and
MCGA machine types for those modes. The DCGA DOS/V mode has been
carefully made into its own render mode instead of part of the
M_CGA2 case. (joncampbell123).
- Fixed refcount -1 error and abort when multiple floppies are
attached to a floppy drive and the "Swap floppy" mapper shortcut
is used at least once (joncampbell123).
- Hercules palette selection now provides a "dark gray" color
mapping to match the green, amber, or gray palette selection of
the user (joncampbell123)
- Fix Hercules vs MDA attribute handling of "dark gray" background
color when hardware blink is disabled. (joncampbell123)
- Added RAMFONT emulation to Hercules Plus machine type, fixed code
to allow Hercules Plus text mode to draw farther than the first 4KB
of RAM if RAMFONT enabled. (joncampbell123)
- DOS kernel: Fix programming mistake that allocated perhaps a bit
too much DOS kernel memory for the "List of Lists" info block.
Fix the sizes of the info block and other structures to make sure
specific kernel structures are placed at fixed addresses because
later Microsoft software for MS-DOS checks those values.
(joncampbell123)
- Serial port: Add multiplier: setting as requested to enable
faster than 115200 baud rates. (joncampbell123)
- Fix mistakes in CPUID emulation that threw a #UD exception for
specific cases where EAX was not recognized by particular CPU
types. (joncampbell123)
- Fix RTC clock emulation to correctly signal IRQ8 interrupt for
both periodic tick and update-ended events. Prior to this fix,
only periodic tick events were reported even if the bit was set
to enable update-ended. (joncampbell123)
- Fix serial and AUX PS/2 mouse emulation to not send relative
motion unless mouse captured, to make it consistent with the
BIOS PS/2 mouse emulation (joncampbell123)
- FAT driver: Major performance boost is possible by eliminating
unnecessary code that re-reads the entire directory when looking
up or changing one particular directory entry. (joncampbell123).
- CMOS registers: Fix code to allow getting and setting time,
fix year vs century registers to work properly. (joncampbell123).
- BIOS INT 1Ah: Fix functions to get and set time and date
instead of faking on read and ignoring set. Use the CMOS
registers. (joncampbell123).
- DOS INT 21h: Fix date and time functions to call the BIOS for
time instead of trying to fake it only at the DOS level. This
includes allowing INT 21h to change the date/time using the
BIOS. (joncampbell123).
- DOS shell: Make TIME actually use INT 21h to set time instead of
directly modifying the BIOS timer tick count in the BDA.
(joncampbell123).
- Increased PIC event queue size, there are corner cases especially
with Windows XP that can occasionally overrun the queue.
(joncampbell123).
- Updated IBM PC keyboard emulation to correctly encode Pause and
Print Screen key scan codes when shift, alt, and ctrl are held
down. This makes it possible to type "Alt+SysRq" for programs
that expect it, including SoftICE. (joncampbell123).
- NE2000 emulation: Looking at recent Bochs source code, ne2k.cc
appears to have downgraded the "IMR write, reserved bit set"
message from BX_PANIC to BX_ERROR. Update the same in DOSBox-X
so that Windows 2000 no longer crashes the emulator with E_Exit()
when probing the NE2000 hardware. (joncampbell123).
- INT 33h mouse services: Add "Get General Driver Information"
function for Microsoft Word 5.5 (joncampbell123).
- INT 33h mouse services: Render cursorType == 2 (graphics cursor)
as if text cursorType == 0 if the current mode is text mode.
Microsoft Word 5.5 always calls functions to set text AND graphics
cursor regardless of whether the actual mode is graphics or not.
This fix allows the cursor to show correctly as the block cursor
it wanted in text mode instead of a moving hardware blinking cursor.
(joncampbell123).
- Fixed S3 XGA emulation bitmap rendering to correctly handle
8/16/32-bit pixel transfer I/O and update comments to reflect
the 32-bit byte aligned transfer mode of the Trio chipset.
This fixes incorrectly drawn radio buttons and 16x16 icons
in Windows NT 3.5, Windows NT 3.51, Windows NT 4.0, and
Windows 2000. (joncampbell123).
- Fixed keyboard emulation so that upon the keyboard reset command
FFh, the keyboard does the reset process and THEN sends back
bytes 0xAA (power on/reset OK) and 0x00 (interface self-test).
This resolves the issue where Windows NT 3.1 pauses at startup and
does not resume booting until you press a key on the keyboard.
This also resolves the issue where Windows NT 3.5 keyboard and
mouse input stops working completely if you press a key on the
keyboard. (joncampbell123).
- Add Hercules InColor emulation of MDA vs CGA attribute select,
and make sure it obeys the blink setting (joncampbell123)
- Change Hercules/MDA text output to render 9 pixels per char
if the char9 setting is on, to match the 9x14 character cell
that those cards emit to the screen. The user can always turn
it back off to get the 8x14 text they're probably accustomed
to in other DOSBox forks. (joncampbell123)
- Render output fixed to never double pixels vertically on render
if the machine type is emulating VGA and the Doublescan option
is enabled, in order to help resolve SVGA text mode issues
reported by ThomasKjoernes (joncampbell123)
- Add InColor CRTC registers and add code to emulate the planar
bitplane operations. Microsoft Flight Simulator 3.0 renders
correctly now. (joncampbell123)
- Update Hercules InColor code to render the same 64-color EGA
palette as machine=ega. (joncampbell123)
- Correct machine=hercules text rendering flaw that prevented
the bright attribute (bit 3/7) from working, making all text
output the same normal brightness. (joncampbell123)
- Add expected data structures and signatures to VGA ROM BIOS at
C000:0000 if machine type selects ATI emulation (joncampbell123).
- Add ATI machine types, which at this time, is just a placeholder
for development to go in that direction over time for those
machine types. (joncampbell123)
- Added "machine=hercules_plus" and "machine=hercules_incolor" as
stubs to be developed on going forward to emulate the HGC+ and
InColor cards. Note that InColor will require the MCH_HERC case
to generate 64-color EGA-like output going forward even if the
documented startup state still emulates the MDA-like monochrome
attributes. (joncampbell123)
- SDL2: Stop checking for compiler flags that make it an error to
declare variables after statements in a function or any other
terrible sins that would offend old C89 standard compilers.
DOSBox-X is never going to compile for a C standard that old.
Furthermore this check is preventing compilation on ARM-based
Macbooks for some reason, though not Intel based Macbooks.
2023.03.31
- "mount -t overlay" will now print a message on the console to
let you know if the act of mounting the overlay replaced a
previous overlay mount. Overlay mounts cannot be stacked in
DOSBox-X (and probably most DOSBox forks that support overlays)
and the user should understand that. (joncampbell123).
- Remove kludges from DOS path resolution to handle drive paths
that refer to drive @ (at sign). Note that in ASCII the at sign
is one code below capital "A". Windows 95 FORMAT.COM due to
another issue was asking for "@:\WINBOOT.SYS" and sometimes
causing a segfault in DOS path resolution due to an uninitialized
drive index. The fix for the other issue removes the need for this
kludge. In it's place a message will be logged to your log file if
anything attempts to access files on drive "@:" because it likely
means a failure to determine the drive index properly. (joncampbell123).
- In addition to reporting the "boot drive" via INT 21h AX=3305h, also
write boot drive in the "List of Lists" structure. Windows 95
FORMAT.COM reads the boot drive from the LoL and does not do any
error checking if that value is out of range (such as if it was
never set and the byte value is zero). Failure to set this field
will result in FORMAT.COM attempting to access "@:\WINBOOT.SYS"
and "@:\IO.SYS" and failing. (joncampbell123).
- Add dosbox.conf option to set a fixed RTDSC tick rate to use at
all times during emulation instead of the CPU cycle count
(joncampbell123).
- Fix RDTSC to maintain a monotonic increasing count even if the
CPU cycles count changes, and better handle timestamp writes
through WRMSR (joncampbell123).
- FAT filesystem driver: Instead of searching from cluster 0 every
time a new cluster is to be allocated, keep track of the search
to help reduce slowdowns on fairly large filesystems when many
files are copied onto it (joncampbell123)
- Page Up/Down vs Roll Down/Up was in the wrong order, switch order
to correct it. (joncampbell123)
- Fix 'pc98 force ibm keyboard layout' was always forced to be 'true'
for left & right bracket keys on US keyboards. (maron2000)
- Fix dynamic_nodhfpu FPU stack bugs, the same bugs that once plagued
dynrec. dynamic_x86 never seemed to have the same problem because
in reality the DH FPU case was normally used, to hit this bug you
had to use core=dynamic_nodhfpu. Also fix dynamic x86 DH FPU code
never to restore from DH case if the DH FPU code was never enabled,
which periodically caused FPU state to disappear. (joncampbell123).
- Add dosbox.conf option to control the MSCDEX.EXE device name when
emulating a CD-ROM drive (joncampbell123).
- Wengier coded this nice text-only DOSBox-X logo for the TTF output.
Fix border alignment issues and make the text logo the default and
only option for MDA and Hercules machine types at boot.
(joncampbell123).
- Add -print-ticks command line option, which enables code to print
both SDL_GetTicks() and emulator time once a second to the console
and the log file. This may help in tracking down bugs related to
long term laptop suspend or suspension of the process in general.
(joncampbell123).
- PC-98: Ignore INT 18h AH=0Ch (enable text layer) in 256-color mode.
Real hardware doesn't seem to let you turn on the text layer in
256-color mode, though I am not certain if this is a restriction
imposed by the BIOS or by the hardware. This fixes possible cases
where Sim City 2000 in 256-color mode reveals garbage text data at
the bottom of the screen if it is there when it starts. This doesn't
fix the issue where Sim City 2000 cannot set 640x480 256-color mode
properly unless your display is already set to 31Khz hsync because that
is evidently a bug in the game, not DOSBox-X. (joncampbell123).
- PC-98 256-color mode: Fix "Active Display Words" value set by INT 18h
to 40, not 80, for graphics layer. This has no apparent effect on
games but it does fix the sometimes erroneous graphics layer width
in the video debug display. Neko Project II source code seems to
indicate the 31KHz hsync mode is programmed that way even if 256-color
mode. This should not break anything since the GDC doesn't let you
read back the "SYNC" reset parameters anyway--this isn't VGA hardware,
after all. (joncampbell123).
- IPX emulation was broken because it set up the virtual file, IRQ
and interrupt handler way too early, which the BIOS startup would
then overwrite with the default BIOS IRQ handler. IPX emulation
should work now, at least multiplayer DOOM. (joncampbell123)
- Added debug menu and dosbox.conf option to show debug information
at the bottom of the screen when enabled. This debug information
reflects the video state at the start of active display. It can be
used to see in real time the state of the palette, display offset,
display stride, and other useful information. It is rendered into
the frame on purpose so that it appears as part of the picture
when you take a screenshot or record a video to AVI or MTS for
later review. (joncampbell123)
- Dynamic core: Fix serious bug in dynrec dynamic core where calls
to handle x86 FPU instructions erroneously passed the entire
FPU status word instead of passing only the FPU stack pointer.
The result of this error was that floating point was erratic,
buggy, and often caused memory corruption in DOSBox-X eventually
leading to a crash. It should now be possible to properly run
DOS games on dynrec based systems, including ARM-based M1 Macbooks,
that use the FPU. (joncampbell123)
- Debugger: When entering debugger interface, force dynamic core
to flush it's state so that the debugger can show the correct
state to the user when they use the "FPU" command to see it.
(joncampbell123).
- VGA emulation: Automatically ignore odd/even mode if "Chain 4"
mode is enabled in the sequencer (normally enabled only for
256-color mode). Some games accidentally set odd/even mode
in 256-color mode and yet apparently worked just fine on real
hardware. Without this change, such games will display distorted
graphics. It makes logical sense "Chain 4" would take priority
over odd/even mode. Note: If a game uses 256-color unchained mode
AND foolishly enables odd/even mode, then the resulting distorted
graphics are probably accurate to what would happen on real
hardware, but then programmers would have caught their mistake
and fixed it so that is very unlikely to occur. This helps to fix
"Seal: Magic Eye" although some remaining visual artifacts in the
game can only be resolved by setting machine=svga_et4000
(joncampbell123).
- Set usescancodes=true when non-US keyboards are detected
(Windows builds) (maron2000)
- For long double without using x86 FPU, the code still calls the
fstcw instruction and can enable FPU exceptions that crash the
emulator, therefore mask off all exception bits to stop that.
(joncampbell123)
- Added code to mouse emulation to control how often the mouse
reports events through the interrupt. Added dosbox.conf option
to allow the user to force a report rate, which can be used to
force a lower than normal report rate for games that cannot
properly handle higher ones. Allow PS/2 mouse emulation, if
rate not set by user, to control report rate. (joncampbell123).
- Add code to COMMAND.COM to flush keyboard input before running
the command given by the user, and flush again when the command
returns. Added option to dosbox.conf to enable/disable this
function (joncampbell123)
- Fix bug where Tandy mode ignored the "allow more than 640kb"
setting.
- Fix INT13h AH=02 broken conditional branch which prevents
installer of game "Inherit the Earth: Quest for the Orb"
to obtain free space of hard drive (maron2000)
- qcow2 image support: Make image able to be mounted by
drive letters (experimental) (maron2000)
- VHD image support: Make file name check for .vhd extension
to be case insensitive (maron2000)
- VHD image support: Fix auto-detection of geometry (maron2000)
- Sound Blaster: Added code to periodically check the user's
settings regarding recording source selection and listening.
This should allow the user to change those settings on the
fly. (joncampbell123).
- Sound Blaster: Added options to control whether the generated
recording source is audible through the speakers, and what
generated audio to send to the client. Options are: silence,
hiss, and a 1KHz test tone. (joncampbell123).
- Sound Blaster: If the DSP is recording rather than playing,
then send audio to the guest at the recording sample rate
containing some form of generated audio. Default is silence.
This ALSO satisfies the Creative driver CTSB16.SYS when it
does the DMA test at startup. (joncampbell123).
- Sound Blaster: Fixed code to properly recognize when the
guest wants to record audio, including through SB16
commands. Prior to this fix, all SB16 Bxh-Cxh commands
were handled as if playback even if the command would
instead trigger recording. (joncampbell123).
- Sound Blaster: Add missing update of "last DMA callback"
timestamp that is needed for when the guest pauses DMA
during playback or recording. (joncampbell123).
- VHD image support: If the VHD image is not a fixed type,
say so in the log (previously it said nothing) and say
what kind of image was mounted (joncampbell123).
- Added INT 13h AH=44h Extended Verify to satisfy any disk
utilities that might use it. The function doesn't really
do anything except return success (joncampbell123).
- Fix CPU stack management to use CPU mode agnostic method
using mem_readw instead of real_readw. However the real
mode version is used if real or virtual 8086 mode because
of comments in an older commit that mention UNLZEXE that
depends on real mode stack pointer rollover. This fixes
a bug related to protected mode APM (Advanced Power
Management) emulation that prevented the Linux kernel
from booting (joncampbell123).
- Add support for INT 2F function 1680h "Idle" and DOS
idle (INT 28h), add code to reduce DOSBox-X CPU load
during emulation when the idle function is called,
add dosbox.conf enable/disable (default enable) to
control this behavior (Github user "finalpatch")
- Graphical fixes and dialog support for Haiku OS (amol-)
- Allow jp106 keyboard layout in DOS/V mode, automatically
choose when keyboard layout is auto on Windows with
Japanese keyboard, fix jp106 input in SDL1 builds running
on Japanese Windows with English keyboard (nanshiki)
- Sync dh fpu state with normal fpu when dynamic core
calls normal core to handle self modifying code. Add
additional code to other cases. (Github user "finalpatch")
- Fix incorrect handling of upper 4 bits of character attributes
in video mode 72h in DOS/V mode (nanshiki)
- Fix BIOS signature at 0xFFFFF to reflect actual value
of Tandy machines so "Ninja" works correctly in
Tandy mode (rderooy)
See also: [https://www.vogons.org/viewtopic.php?f=32&t=92129]
- Change default mixer rate to 48KHz instead of the
long standard 44.1KHz. Most modern sound cards on
modern OSes render at 48KHz anyway and resample
either in hardware or software and most configurations
render at 48KHz. Perhaps somewhat improved audio quality
could be had by rendering at what most sound cards are
doing these days anyway. As usual, audiophiles are free
to set the mixer rate to 96KHz if supported by their
sound card. (joncampbell123)
- Fix PIT 0 timer interrupt handling not to attempt
periodic event and error adjustment unless the game
is using periodic modes 2 or 3. This fixes PIT timing
bug and possible emulator hang when exiting games
like "Days of Thunder" that leave PIT 0 in mode 0 or
1 on exit for some reason. (joncampbell123)
- Fix Sound Blaster DMA rate limits to better reflect
actual hardware. SB16 limits to 45454Hz just as
Pro and earlier do. These limits were added before
the proper measurements were coded and tested on
real hardware. (joncampbell123)
- Fix S3 cursor emulation to support both X11 and
Windows hardware mouse cursor modes available
on S3 Virge, Trio, and possibly other cards
(John Tsiombikas)
- Add EGA/VGA emulation code to keep track at runtime
whether planar features are in use. If they are not,
then handle EGA/VGA video memory access using a
simplified version for a bit of a performance boost
in response to complaints about poor VGA emulation
performance. (joncampbell123)
- VGA palette DAC update: Instead of recalculating
the palette map every time a color is written through
port 3C9h, set a flag. Defer palette map update to
when the next scan line is rendered, in order to
improve performance. (joncampbell123)
- Add option to enable or disable the "memory I/O
optimization" option, meaning the code that was
added to assign simplified VGA memory I/O handling
when the DOS game is not using any bit planar raster
op and more complicated features of the EGA/VGA
hardware. (joncampbell123)
- Added VGA render on demand mode to VGA emulation.
When enabled, VGA emulation does not render scanlines
until vertical retrace or when certain registers are
written that change the display (attribute controller,
VGA palette, etc.). It is added to dosbox.conf as
"scanline render on demand" and is false by default
because it can provide a performance boost for DOS games
but it also tends to break timing-dependent Demoscene
effects. The idea is that some emulator performance
improvement may be possible by not interrupting the
CPU loop per scanline for the same reason that DOSBox
SVN has traditionally only rendered the VGA display
in quarters instead of per scanline. (joncampbell123).
- Remove experimental "alt VGA" rendering code. It was
never completed and it is probably starting to
bitrot (joncampbell123).
- Fix EGA/VGA version of CGA 4-color graphics renderer
code to consider all four bitplanes when combining
each pair into a 2-bit value. When bitplanes 2+3 are
enabled and writeable, the 4-color mode becomes a
sort of 2-plane 2 bits per pixel 16-color mode. Fix
for machine=ega and "Leather Goddess of Phobos 2",
a game that sets up EGA 640x200 16-color mode then
suddenly switches on the 2bpp CGA mode as a way to
do 16-color dithered graphics. (joncampbell123).
- Fix installers for Dynamix games not working.
(Allofich & halcyon00)
- Fix crash related to swapping between disk
images. (Allofich)
- SVN r4482: Correct CMS sound pitch. (Allofich)
2022.12.26
- Allow more than 640KB of conventional memory,
regardless of "allow more than 640kb" option, for
Tandy machine type. The setting is capped to 768KB
to reflect Tandy systems with that upgrade, which
is said to allow a full 640KB for DOS and 128KB for
video RAM without any conflict from the MCB chain.
Adjust Tandy video emulation for 768KB case. This
fixes "Might and Magic III Isles of Terra" crashes
in Tandy mode and Tandy graphics because the game
does not correctly handle the memory configuration
when less RAM is involved. (joncampbell123).
- Fix code page CPI/CPX loader to allocate 128KB of
memory instead of 84KB. The code allocates a 64KB
stack for the executable code within. The 84KB
allocation permitted the initial stack pointer to
exist beyond available conventional memory if
conventional memory size was below about 156KB and
cause a crash. This is a quick fix, a long term fix
would be to instead set the initial stack pointer
to some offset below 0xFFFE based on available memory,
just as the .COM executable loader was modified to do
some time back to enable proper execution when
memsize < 64KB. (joncampbell123)
- Do not load country/font information at startup
if the code page to load is the same as the default
code page. (joncampbell123)
- Fix Tab/Shift+Tab in Configuration GUI regarding
setting text fields that have a ... button to select
from an enumeration. Those buttons are no longer a
trap for tab enumeration. (joncampbell123)
- Fix Mac OS SDL1 keyboard support code to properly
fill in unicode character values in relation to
IME checks. This fixes a problem where it was
impossible to type anything in the configuration GUI
in SDL1 Mac OS builds. (joncampbell123)
- Mark VBE mode 0x212 as "do not list" so that it does
not appear in normal VBE mode enumeration, while
keeping it valid for the Windows 3.1 driver which
assumes the mode is there at that number without
enumeration. By not listing the mode, drivers like
VBEMP and DOS application code will not attempt to
use it. There is already another mode number for
640x480 24bpp anyway. (joncampbell123)
- Fix VBE mode 0x212, which is 640x480 24bpp packed
mode but with a per scanline stride of 2048 bytes
per pixel set aside for the Windows 3.1 driver and
the "640x480 (1Meg) 16 million colors" setting,
so that the VBE "Get Mode Info" call reflects the
proper per-scanline stride instead of the ideal one.
This should fix complaints about VBEMP and 640x480
24-bit color mode. Given how minimal the use of the
mode is by the Windows 3.1 driver, the 2048 byte
mode does not permit setting scan line length or
display start i.e. panning is not permitted.
(joncampbell123).
- Fix Pentium Pro emulation to support microcode
related MSRs so that Windows 98 does not crash
on startup when cputype=ppro_slow. (joncampbell123).
- Added SMV debugger command. This is the linear
(virtual) equivalent of the SM "Set Memory"
command. (joncampbell123).
(https://github.com/joncampbell123/dosbox-x/issues/3826)
- Fix debugger help command to list both C / D commands
and the DV/DP commands. (joncampbell123)
- Add VGA FONTDUMP debugger command for those
who might want to take custom fonts in text
mode and do something with them outside the
emulator. "VGA FONTDUMP" followed by a filename
which must have the extension .BIN (for a raw
64KB dump of font RAM) or .BMP (for a formatted
dump as a monochrome bitmap file). (joncampbell123).
- Disabled code to randomly return GDC drawing
status active. The implementation was causing
severe performance issues. The code has not
been removed because it could be optimized and
fixed and could even follow the state of GDC
drawing. (joncampbell123)
- VGA 6-bit DAC mode expand to full 8-bit range,
instead of simple shifting (joncampbell123).
- Fix 8254 PIT emulation (joncampbell123)
- Add dosbox.conf option "cpuid string" to allow
CPUID to return custom ID strings instead of just
"GenuineIntel". Have fun! (joncampbell123)
- Fixed build to properly compile against internal
SDL/SDL2 library even if an external version is
available (joncampbell123)
- Fixed some violations of the one definition rule.
(Jookia)
- Use pkg-config to find OpenGL (Jookia)
- Updated Flatpak SDK and dependencies (Jookia)
- PC-98 Implement AVSDRV.SYS PCM function (int D9h)
(nanshiki)
- PC-98 Support 6x8 Katakana font with int 18h ah=14h
(nanshiki)
- PC-98 Fix Audio Q-Channel info in MSCDEX (nanshiki)
- Fixed FFMPEG 5 compatibility (Jookia)
- Fix FFMPEG crash if FFMPEG fails to write header
for some reason. (joncampbell123)
- Fix setcap on systems with split /usr (Jookia)
- Fix building with --disable-core-inline (Jookia)
- Fix building not finding fluidsynth (Jookia)
- Fix some NetBSD build issues
(Jookia, with patch from Nia)
- Fix minor graphical issues in mapper GUI (aybe)
- Removed --disable-core-inline (Jookia)
- Swap SDL2 XInput axes by default for a better
out of the box experience (aybe)
- SDL1 XInput is now enabled by default for
a better out of the box experience (aybe)
- add set of cga shaders from dosbox staging (aybe)
- Updated mt32emu code to latest(2.7.0).(maron2000)
Also, added config option "mt32.engage.channel1"
(Refer to https://github.com/munt/munt for details)
- Fix missing line in printouts (Issue #3569)
(maron2000)
- Adjust Int 11 return value to better match real
BIOSes. (Allofich)
- Limit the "always return bit 6 of port 61h as set
for PC" change to only apply to early PC types
(MDA, CGA or Hercules). (Allofich)
- Integrated SVN commits (Allofich)
- r4476: Preserve last error code when no error
occurs.
- r4477, r4478: Drive system improvements.
- r4479: Correct handling of invalid encodings of
the BOUND instruction.
- r4480: Some confirmed DOS behaviors and minor
cleanup.
- r4481: Push registers for most DOS function calls;
prevents a bug in UNLZEXE from causing a crash, and
maybe helps other buggy programs and unusual cases.
Use real addressing to support stack pointer wraparound.
- Fix Opl3! Duo and Opl2 Audio board audio playback on
unix (stengun)
- Fix Japanese input related issues (nanshiki)
- Fix START command only ever opens first file
(NebularNerd, darac-10, aybe)
- Win32 logging console (aybe)
- add 'Debug/Clear logging console' menu entry
- ensure main window stays above it when shown
- Fix overflow in mapper info on SDL2 builds (aybe)
- Enable OpenGL output in MinGW builds again (maron2000)
- Fixed to display IME marked text in SDL2 version on
macOS (nanshiki)
- Fix allocation of IDE slots when mounting images by
IMGMOUNT (maron2000)
- Increase of sprintf buffer size in Program::WriteOut()
(caiiiycuk)
- Fix unexpected behavior of swapping multiple CD images
(maron2000)
- Fixed build on NetBSD and FreeBSD (Jookia)
- Updated FFMPEG video capture to use newer API,
fix memory leaks, and fix use-after-free bug that
may have been responsible for occasional crashes
when using the function. (joncampbell123)
2022.09.0 (0.84.3)
- Added 86PCM support for PC-98 emulation. (nanshiki)
- Added German language translation. (Link-Mario)
- Added code page 867 (compatible with Hebrew DOS
WordPerfect) and 868 (Urdu) for the guest-to-host
code page conversions. (Wengier)
- Improved ANSI.SYS detection for the welcome banner
and CLS command. The command "INTRO WELCOME" will
re-display the welcome banner without running the
commands in AUTOEXEC.BAT. (Wengier)
- Improved IME support on macOS SDL2 build. (Wengier)
- Improved detection for the Chinese/Japanese/Korean
keyboard layouts on Windows platform. (Wengier)
- Improved Windows installer for selecting languages
for the DOS emulator. (Wengier)
- Improved config option "file access tries" for the
Linux and macOS platforms. (Wengier)
- Fixed SafeDisc 2 check for Red Alert 2 by renaming
the IDE CD-ROM device. (rderooy & psyraven)
- Fixed problem when inputting characters with call
INT21/AH=3Fh in PC-98 mode. (nanshiki)
- Fixed hang on zip-mounted drives and minor bug on
the DOS file-read code. (tbr)
- Fixed file copying problem with Windows 9x install
at the end of the DOS-based Setup. (Wengier)
- Fixed command like "IF NOT EXIST D:\NUL ..." not
working if the drive does not exist. (Wengier)
- Fixed that pasting text from clipboard via mouse
may not work properly in some cases. (Wengier)
- Fixed the mouse scrolling wheel not working with
CTMOUSE 2.1's "CTMOUSE /O" in guest DOS. (Wengier)
- Fixed window transparency setting not working in
macOS SDL1 build. (Wengier)
- Fixed macOS small display issue with the in-tree
SDL2 library by applying SDL updates. (Wengier)
- Fixed menu option "Always on top" to work with the
in-tree SDL2 library on macOS. (Wengier)
- Fixed the terminal mess-up issue with -display2
option on Linux and macOS platforms. (Wengier)
- Fixed OpenGL output options not working in Windows
ARM32/ARM64 builds. (Wengier)
2022.08.0 (0.84.2)
- Fill in PC-98 BIOS data area byte value indicating
CPU type (whether 8086, 286, 386 or higher)
(Wengier), fill it in at startup (joncampbell123).
- CHOICE now supports breaking and errors on end of
file or pipe instead of freezing DOSBox-X. (Jookia)
- Fixed debugger commands parsing numbers wrong. (Jookia)
- Fixed DIR crashing on volumes with more than
999,999,999,999 bytes of free space. (Jookia)
- Switched to year.month.patch versioning (Jookia)
- Fix NE2000 panicking if packets are queued too fast.
(kcgen, Jookia)
- Fix ISO image format detection to support pure
UDF formatted images, meaning that the image
lacks any ISO 9660 features and contains only
UDF. (joncampbell123).
- Added support for UDF filesystem to ISO image
handling. It is enabled by default if emulating
MS-DOS 7.10 (aka Windows 98) or higher.
(joncampbell123).
- Added code to detect Rock Ridge according to the
System Use Sharing Protocol standard, and to
read the SUSP entries correctly for the alternate
name, if enabled. (joncampbell123)
- Updated ISO MSCDEX drive emulation to scan the
available volumes in the ISO image rather than
assume the first volume, which makes Joilet
support possible if long filenames are enabled
and the DOS version is 7.0 or higher. (joncampbell123).
- Add IMGMOUNT -o option for ISO filesystem support
to enable/disable Joliet extensions, which is a
Microsoft extension to ISO 9660 where long names
encoded using Unicode UCS-16 exist as a supplementary
volume in the ISO image and are used by Windows 95
and higher to support long filenames on CD-ROM.
Added support for reading the Joliet volume and
providing them for both the 8.3 and long filename
APIs in DOS. (joncampbell123).
- Add IMGMOUNT -o option for ISO filesystem support
to enable/disable Rock Ridge long filename support.
The option is -o rr=1 to enable and -o rr=0 to
disable. (joncampbell123).
- Fixed 8.3 name generations on ISO drives with Rock
Ridge extension. The ISO drives can be refreshed
via RESCAN command like other drives. (Wengier)
- SDL_Net support is available for HX-DOS builds,
similar to other builds. Packet driver is needed
for network capability in DOS. (Wengier)
- Fixed line endings when copying to shared clipboard
(e.g. CLIP$) in non-Windows platforms. (Wengier)
- Fixed problems with SDL1 Windows builds in which
the user had to type the Fullscreen mapper shortcut
twice. It seems a SDL1 library function that is
used to indicate ignoring or adding a class of
events also liked to flush the event queue. This
is called on mode change. This caused lost
keystrokes, leaving the mapper the impression that
those keys were still held down. (joncampbell123).
- Fixed PC-98 mode MS-DOS 7/Windows 9x boot disk's
80386 CPU check. (Wengier)
- Added support for auto-converting non-image drives
(such as mounted local drives) to disk images, so
that they will be visible when booting into guest
systems. A config option "convertdrivefat" (in
[dosbox] section) is added to toggle this setting,
or you can toggle via BOOT command's -convertfat
(or -convertfatro option for read-only access) and
-noconvertfat options. There're also config options
"convert fat free space" (in [dosbox] section) and
"drive z convert fat" (in [dos] section) to control
free space (in MB; 0 means read-only) and whether
to also convert virtual drive Z:. Much of the code
is imported from DOSBox Pure, with added support
for PC-98 HDI and code page conversions. (Wengier)
- Added menu option "Save to disk image" (under drive
letter in "Drive" menu) to save a mounted non-FAT
drive to selected disk image (IMG/HDI). (Wengier)
- Added the "Limit disk transfer speed" menu group
(under "DOS") to toggle the hard & floppy disk data
rate function. Also moved "Quick launch program..."
menu from "DOS" menu to "Main" menu. (Wengier)
- Added code pages 856 (Hebrew) and 859 (Latin 9) for
the guest-to-host code page conversions. (Wengier)
- Added config option to allow create of temporary
devices for piping operations when a temporary DOS
path is not available. (Wengier)
- Added support for ATAPI raw sector reading with
READ CD command. (schellingb)
- Report bad sectors recorded in raw CD images as
ATAPI read errors. (schellingb)
- You can use CONFIG -set langcp=... to change the
current language along with the embedded code page,
or CHCP nnn:... to specify a language file as well,
e.g. "CHCP 932:" or "CHCP 932:ja_JP" for Japanese
code page and language file. Also improved -langcp
option for SBCS code pages, and Windows installer
will additionally set keyboard layouts for the
selected languages. (Wengier)
- Changed menu option "Restart DOSBox-X with language
file..." to "Load language file..." for loading
language files without rebooting DOSBox-X, unless
a guest system is currently running. (Wengier)
- Imported the more recent MBR code from FreeDOS to
avoid the "boot menu" as in older code. (Wengier)
- When changing TTF font, DOSBox-X will try to show
the number of missing characters in the new TTF
font (if any). (Wengier)
- Fixed color becoming darker after changing TTF font
multiples times in TTF output. (Wengier)
- Fixed display of individual/total file sizes with
DIR command when they are very large. (Wengier)
- Fixed non-US code page conversions for mounted FAT
drives. (Wengier)
- Fixed incorrect message displays in Configuration
Tool and Mapper Editor when booting into guest
systems with language files. (Wengier)
- Fixed possible "Path not found" bug when switching
to code page 950 from another code page. (Wengier)
- Fixed creating directories may not work properly
for overlay drives on Windows systems. (Wengier)
- Fixed -set and -get options of CONFIG command when
there are spaces in property names, without having
to prepend the section names. For example, command
CONFIG -get "synchronize time" is supported just
as CONFIG -get "dosbox synchronize time". Similar
for -SET option when launching DOSBox-X. (Wengier)
0.84.1
- Added dosbox(-x).conf option to enable workaround
for errant DOS programs that set the TF (trap flag)
and then crash. Added code to DOS kernel INT 01h
handler to clear TF flag if instructed to by the
dosbox(-x).conf setting which can prevent such
errant programs from crashing. Needed for 1996 demo
"Dyslexia" by Threesome. (joncampbell123)
- Fix RETF instruction handling to only modify the
low 16 bits of ESP in real mode, even if the
immediate value for RETF is a large value like
FFFEh (fix for Finster by Mad Scientists). Prior
to this fix, it was possible to increment the
upper 32 bits of ESP from real mode using a
normal 16-bit RETF with a very large immediate
value. This fix removes the need for the ENTER
masking dosbox(-x).conf option entirely and allows
Finster to run without it. (joncampbell123).
- Added dosbox(-x).conf option to control whether the
ENTER instruction masks the stack pointer to 64KB
if the stack segment is 16-bit, which is off by
default because real Intel processors do not do
that. (joncampbell123).
- Added dosbox(-x).conf option that can instruct EGA/
VGA emulation to ignore the display blanking bit in
the sequencer registers. Some games appear to have
bugs in their VGA programming code that can
accidentally set that bit and therefore show
nothing on screen. Fix for 1996 game "Finster" by
Mad Scientists. The game appears to make this
programming mistake on any fork of DOSBox
including DOSBox-X, and is reported to also make
the same mistake on other emulators like 86box.
However most forks of DOSBox have a matching bug
in their VGA emulation that allows the blanked
display to appear normally regardless of that
register bit unless run with machine=vgaonly.
It's unclear if there is anything about DOSBox
or DOSBox-X emulation that causes the game to
misprogram the registers. (joncampbell123).
- If guest uses ENTER instruction from 16-bit code
with 66h (32-bit operand) prefix, and the CPU is
in real mode or the stack segment is 16-bit, mask
stack pointer with 0xFFFF. This fixes 1996 game
"Finster" by Mad Scientists (joncampbell123).
- DOSBox-X will now search for resource files such as
fonts and translations in the resource directory (
C:/DOSBox-X in Windows, /usr/(local/)share/dosbox-x
in Linux, and dosbox-x.app/Contents/Resources in
macOS) in addition to other locations. (Wengier)
- Updated DOSBox-X's integration device to version
1.0.1, adding API calls such as DOSBox-X's version
number and platform, and some DOS-related status
such as DOS version number. (Wengier)
- Improve the HX-DOS build package, including the
TTF output support and accessory files. (Wengier)
- Use long double for internal event scheduling
if available, to improve accuracy (joncampbell123).
- Fix remaining SDL2 Windows problems by adding
missing break statement above window event
handler. (joncampbell123).
- Move "Always on top" menu option from "Video" to
"Main" menu, also enabled for Windows/macOS SDL2
builds when possible. (Wengier)
- Add workarounds for SDL2 builds to avoid problems
with window resize, menu update, and restore
events that sometimes caused the emulator to hang
on startup in Windows. (joncampbell123).
- Add "Set transparency..." and "Set text in title
bar..." menu options under "Video" to change window
transparency and title bar text. (Wengier)
- Add special properties to CONFIG command including
"system" and "version". (Wengier)
- Fix DOS 8.3 filename generations when there are
special characters in the filenames. (Wengier)
- Fix creation of disk images with spaces using the
"Create blank disk image..." menu option. (Wengier)
- Fix IMGMAKE to provide executable code in MS-DOS
partition or floppy disk boot sector following
the BPB, that prints "This is not a bootable disk"
instead of leaving zeros that lead the CPU astray
and possibly hang the system in the event anything
tries to boot the partition (joncampbell123).
- Fix emulator segfault on invalid encoding of
BOUND instruction (joncampbell123).
- Address auto-centering on mode change complaints
by making the "-" setting of windowposition the
default. (joncampbell123).
- Added MinGW-lowend SDL2 build, which is compatible
with Windows XP. Also updated the build selection
page for Windows installers. (Wengier)
- Fix windows transparency during TTF output switch
in Windows SDL2 builds. (Wengier)
- Fix SDL2 Windows builds to flag a resize as not
user initiated only if the presence of the menu
bar changes. This fixes a problem where SDL2
builds did not acknowledge window resize events
at all. (joncampbell123).
- Fix FluidSynth weird sound issue in 32-bit Visual
Studio SDL2 build. (Wengier)
- Fluidsynth: Fix uninitialized conditional object
init in Windows builds (joncampbell123).
- Linux/X11: Add an X11 error handler function to
handle the occasional X11 error that can happen
within the SDL2 library if certain events, like
window resize, occur too frequently. The custom
error handler logs the error but does not abort
the emulator like the default one would.
(joncampbell123).
- Fix SDL2 builds with output=surface not to render
if the window at any point is too small. Resizing
the window below the minimum supported by the
DOS screen will not longer trigger segfaults or
assertion failures. Issue #3348. (joncampbell123).
- Fix IME not working on Windows when -langcp option
is used to load a language with DBCS codepage, or
in 32-bit MinGW lowend SDL1 build. (Wengier)
- Fixed INT 10h failing to fully clear Tandy video
memory when entering 16-color graphics modes.
(joncampbell123).
- Fixed missing/NULL INT 1Fh interrupt vector with
CGA/PCjr/Tandy machine types. DOS games that print
to screen using INT 10h in graphics modes can now
print extended (>=128) character codes correctly.
This fixes "BushBuck: A Treasure Hunt" and enables
it's rather odd Tandy detection routine to work
with machine=tandy. (joncampbell123).
- Disney Sound Source: Fix problems between Disney
sound source and parallel port emulation. Fix the
code to enable Disney Sound System emulation either
by disney=true (DOSBox SVN compatible) or
parallel1=disney (The DOSBox-X way). (joncampbell123).
- DOS SHELL: Change shell command parsing to make
unusual combinations of command plus trailing
command possible such as ECHO. ECHO; ECHO: ECHO[
ECHO] ECHO\ ECHO/ ECHO" ECHO+ (issue #3503).
(joncampbell123).
- DIR command supports more sorting methods including
"DIR /OGD", "DIR /OGE", and "DIR /OGS". (Wengier)
- Support for BDF and PCF bitmap fonts for DOS/V
functions, such as the free WenQuanYi bitmap font
(bundled for displaying CJK characters). (Wengier)
- EGA: Add machine type to emulate 200-line (CGA
compatible) EGA display mode, machine=ega200.
All text modes have 8x8 character cells, use CGA
compatible video timing, and the 640x350 modes
are not available. Fix EGA display offset register
usage to properly work with alphanumeric text
mode when "word mode" is turned off. This fixes
IBM demonstration program "Fantasy Land".
(joncampbell123).
- IDE: Remove extra state from IDE controller that
is managed by the drive. The ATA-1 standard seems
to say that status and drive/head registers on
read back always come from the ATA device.
(joncampbell123).
- IDE: If ATA device is busy, all IDE registers
return the status register and BSY bit according
to ATA-1 standard (joncampbell123).
- IDE ATAPI CD-ROM: Add ATAPI command BEh READ CD.
This command is like the 28h/A8h READ command but
specific to the CD/CD-ROM format and allows reading
the various sector types including data sectors and
CD audio. Windows NT 4.0 requires this, or else it
treats the CD-ROM drive like a non-working device.
(joncampbell123).
0.84.0
- CMOS century register now aliased to register
32h and 37h to appease Windows 2000, which assumes
the century is stored there and will complain
about invalid date/time otherwise (joncampbell123).
- Treat IDE command E7h (FLUSH CACHE) as a no-op
so that the common use of it from Windows 2000
doesn't spam your log file (joncampbell123).
- BIOS: At post, if DOS kernel was active and the
DOS Shell was still running, initiate a proper
system reset event. Some software, including the
WINNT.EXE install program for Windows NT, like to
restart the system by JMPing to the BIOS POST
entry point. Prior to this fix, doing that from a
DOS program caused instability with mounted images
and the DOS shell due to recursion. (joncampbell123).
- Fix FPU implementation for aarch64 cores (cimarronm)
- Fixed INT 10h and DAC palette mapping to resolve
incorrect colors with Hercules graphics mode when
a game calls INT 10h to set video mode after setting
it up. This resolves the incorrect blue on black
color map for Grand Prix by Accolade (joncampbell123).
- Add recursive mkdir_p() directory creation so that
overlay filesystem support can correctly create
a subdirectory of any depth, instead of only one
level deep from an existing directory on disk.
(joncampbell123)
- Add dosbox(-x).conf option "isapnpport" to control
whether the ISA Plug & Play I/O port is presented
to the guest. Setting is "true", "false", or "auto".
"auto" means to enable if PnP BIOS is enabled.
Previously this port was always present even if
the PnP BIOS was not. Some operating systems,
including Windows NT/2000/XP, will enumerate ISA
Plug & Play hardware by themselves whether or not
the PnP BIOS is present. (joncampbell123)
- Fix FPU operations using the top of stack on
32-bit VS builds (cimarronm)
- Add IDE ATAPI command MECHANISM STATUS for
Windows NT 4.0 because that system seems
to want to know if your CD-ROM drive is a
CD changer (joncampbell123)
- IDE Plug & Play resource descriptor changed to use
2-byte structure for listing IRQ resource instead of
3 bytes. This (for some reason) fixes problems with
the IDE driver in Windows NT 4.0, Windows 2000, and
Windows XP and allows them to boot properly.
(joncampbell123)
- INT 13h extensions function 48h is supposed to
return physical geometry, not the logical geometry
normally returned by function 08h. This means for
IDE devices, to return the geometry the IDE controller
is using. (joncampbell123)
- Enhanced the Mapper Editor interface. The Mapper UI
has been greatly improved. (aybe)
- Add IDE ATAPI command MECHANISM STATUS for Windows
NT 4.0 because that system seems to want to know if
your CD-ROM drive is a CD changer. (joncampbell123)
- Fix IDE devices to start up with the drive ready
bit set for OSes that expect it when probing IDE
devices. This allows the Linux kernel to see IDE
ATA drives emulated by DOSBox-X. (joncampbell123)
- Fix IDE ATAPI emulation to correctly handle CD
READ across one or more DRQ block transfers. Use
block size given by guest in consideration of DRQ
block size, which allows ATAPI CD-ROM emulation to
work properly with the Linux kernel. (joncampbell123)
- Add debug command to show PC-98 color palettes.
Corrected typo. (joncampbell123)
- Add support for PC-98 monochrome graphics mode.
(joncampbell123)
- IDE emulation now handles implementation events per
IDE device instead of per IDE controller, which
may resolve IDE controller issues with some guests.
(joncampbell123)
- Added PC-98 GDC drawing commands, which is
based on Neko Project II source code (nanshiki)
- Added PC-98 LIO BIOS interface, which is based on
Neko Project II source code (nanshiki)
- INT 21h AH=31h Terminate And Stay Resident: If the
program called INT 21h to free its own PSP segment,
reassign the block back to the program as allocated
and then resize as expected. Needed for PC-98 game
"Yu No" in which PLAY6.EXE, one of the resident
drivers used for music, does just that. (joncampbell123)
- Add a hack to enable read access to port 0xa460 on PC-98 which
returns Sound ID to detect the sound board available.
Note that the current hack returns Sound ID of PC-9801-86 board
regardless of the board selected to emulate. (maron2000)
- Adds WINCHECK to list of programs which should not
return a valid installation check for WinOldAp
(AX=1700h/int2fh) so it doesn't mistakenly believe
Windows is running (cimarronm)
- Add minimal support for IDE SET FEATURES command EFh.
(joncampbell123)
- Fix CMPXCHG8B to change only the ZF flag, instead of
changing ZF with other flags in an undefined state
afterwards. This fixes problems with the Windows 2000
kernel booting up and cputype=pentium (though I am
unable to get past the INACCESSIBLE_BOOT_DEVICE error).
(joncampbell123)
- Updates XADD instruction to set appropriate flags
(cimarronm)
- Updates to FPU to handle opcode size prefix (66h)
on FSTENV/FLDENV/FSAVE/FRSTOR instructions (cimarronm)
- Update FLD constant FPU instructions to more
accurately match FPU implementations (cimarronm)
- Fixed dynamic_dynrec being displayed as dynamic_x86
in menu, and PREFETCH instruction breakage in the
dynamic core. (Jookia)
- Fixed crash if no dynamic cores available (Jookia)
- Fixed TTF mode breaking a guest not running the
DOS kernel. (Jookia)
- Fix DBCS table initialization on reset and
restart (cimarronm)
- Fixed some guest systems may not work as expected
in non-TTF outputs. (Wengier)
- Fixed IME input not working in MinGW builds, and
FluidSynth in MinGW-lowend builds. (Wengier)
- Fixed resizable OpenGL Voodoo window not working
properly on Windows in previous version. (Wengier)
- Fixed commands "CHOICE /N /C:123" and "MIXER /GUI"
not working properly in previous version. (Wengier)
- Integrated commits from mainline (Allofich)
- Disable leading directory validity check in
DOS_FindDevice.
0.83.25
- XGA: Do not register XGA I/O ports unless emulating
S3 chipset (such as machine=svga_s3) (joncampbell123)
- Menu options "Force scaler" and "Print text screen"
can now be assigned to keyboard shortcuts from the
Mapper Editor. (Wengier)
- Allowed to boot from Toshiba DOS image file for the
Toshiba J-3100 emulation. (nanshiki)
- Default S3 machine types now support XGA/SXGA VText
in DOS/V, in addition to svga_et4000. (nanshiki)
- Added "j3100backcolor" and "j300textcolor" config
options (in [dosv] section) to specify background
and text colors in J-3100 mode. (nanshiki)
- Added config option "aspect_ratio" (in [render]
section) which when set will force the specified
aspect ratio (e.g. 16:9 or 3:2) in the aspect ratio
correction mode (i.e. aspect=true). A menu group
"Aspect ratio" is added to "Video" menu for users
to select or set an aspect ratio, including an
original ratio option. (Wengier)
- Added config option "show recorded filename" (in
[dosbox] section) which when set to true (default)
will show message boxes with recorded filenames
when making audio or video captures. (Wengier)
- Added config option "allow quit after warning" (in
[dosbox] section) which when set to false DOSBox-X
will disallow the quit option after displaying a
warning message. (Wengier)
- Added config option "turbo last second" (in [cpu]
section) which allows to stop the Turbo function
after specified number of seconds. (Wengier)
- Updated FLAC, MP3, and WAV decoder libraries to the
latest versions (v0.12.38, v0.6.32, and v0.13.6)
respectively; per David Reid). (Wengier)
- Added support for upper case characters (A-Z) for
AUTOTYPE command. (kcgen)
- Added /T option for CHOICE command to set a default
choice as in DOS, e.g. CHOICE /T:Y,3 (Wengier)
- Added Korean language option in Windows installer.
Also, language option page will be shown regardless
of the output option selected. (Wengier)
- Add stub INT 10h handler at F000:F065 if
machine=vgaonly and using a VGA ROM BIOS image.
The IBM VGA ROM BIOS image points INT 42h at that
fixed address and calls it for any function it does
not understand. (joncampbell123)
- Set int33 event status bit 8 when passing absolute
mouse coordinates, which is useful in emulation or
virtualization environments where the mouse may be
integrated with the host cursor. (javispedro)
- Added support for Pentium Pro hinting NOPs and
related multi-byte NOPs. (Jookia)
- Updated HX DOS Extender to latest version 2.19 for
HX-DOS builds. (Wengier)
- DOSBox-X returns 1 instead of 0 when E_Exit occurs
or unit tests fail. (Wengier)
- Fixed built-in IPX and Modem emulation unavailable
in MinGW builds. (Wengier)
- Fixed -machine command-line option (as listed by
"INTRO USAGE" command) not working. (Wengier)
- Fixed lockup in classic Jumpman. (maron2000)
- Fixed color in some modes under x86-64 macOS SDL2
builds. (myon98)
- Fixed extra INT 10h call during BIOS screen. The
extra call caused crashes when combined with a ROM
image of the stock IBM VGA BIOS. (joncampbell123)
- Fixed fscale FPU operation and updated FPU status
word. Also fixed FPU stack value log messages on
x86-based builds. (cimarronm)
- Fixed bug that OpenGL Voodoo window may not appear
correctly if the DOSBox-X window was previously in
full-screen mode in some builds. DOSBox-X will now
ensure a switch to window mode (or maximized window
mode) in this case. Also fixed some menu options
including rebooting DOSBox-X while Voodoo emulation
is currently active. (Wengier)
- Fixed crash when switching to dynamic_rec core from
menu when dynamic_x86 is also available. Also fixed
the dynamic_rec core may not be displayed correctly
in the menu when a language file is used. (Wengier)
- Fixed Windows resource information. (Wengier)
- Fixed a buffer overflow when launching a program.
(Jookia)
- Fixed bug where DOS IOCTL would call device control
channel on devices which did not advertise support
for IOCTL. (cimarronm)
- Clean up of DOS device and attribute flag usage
(cimarronm)
- Integrated commits from mainline (Allofich)
- Use real pointer with font data for reading
characters. Also ignore page number for modes with
only one page.
0.83.24
- Release notes for this version:
https://dosbox-x.com/release-0.83.24.html
- PC-98: Search for FONT.ROM in resources directory
in addition to the working directory. (bsdf)
- Add S3 Vision964 and Vision968, based on existing
support for the Vision864/868 chips (rderooy).
- APM BIOS: When the guest calls the APM BIOS to go
into suspend or standby mode, emulate a suspended
or standby mode. Spacebar resumes the guest machine.
Blank the display (if VGA/SVGA machine type) upon
suspend/standby and unblank upon leaving it.
(joncampbell123)
- APM BIOS: Add dosbox-x.conf option to control
whether the power button triggers a suspend or
standby event. (joncampbell123)
- APM BIOS: Add power button mapper event, tie
power button to APM BIOS, return power button as
APM suspend event, add code to APM BIOS to handle
suspend and resume events. Windows 98 no longer
complains about the inability to suspend or go to
standby. (joncampbell123)
- APM BIOS: Limit debug logging of APM BIOS function
AH=05h (CPU IDLE) because Windows 98 likes to call
that function way too often. Once a millisecond, in
fact! The log spam makes it difficult to see
anything important scroll by while debugging.
(joncampbell123).
- Revise S3 Trio64 XGA line drawing code to
add comments, and obey the "skip last pixel" bit
so that the Windows drivers can better draw polygon
line segments. This fixes broken XOR polylines in
Windows 3.1 and Microsoft Word 2.0. (joncampbell123)
- Add S3 ViRGE accelerated XGA line drawing function.
Windows 3.1 through Windows 98 can now draw lines
with hardware acceleration. (joncampbell123)
- Merge code to help preserve long filename when
older program writes/overwrites the 8.3 filename.
- Change "fpu" config setting to an enumeration
that still accepts true and false, but now also
accepts auto, 287, and 387. It is now possible to
specify fpu=287 and cputype=386 to emulate a 386
paired with a 287 chip as is said to be how early
386 Compaq systems were wired, for example.
(joncampbell123)
- 3Dfx Voodoo window is now resizable (inc. maximized
window) when using OpenGL mode, in addition to the
software mode. (MartyShepard, kekko, Wengier)
- Menu options "CJK: Switch between DBCS/SBCS modes",
CJK: Auto-detect box-drawing characters", and "Reset
color scheme" (in "Video" -> "TTF options") are now
assignable in Mapper Editor. (Wengier)
- The "colors" config setting now allows a leading
"+" character to stay the specified color scheme when
switching from another output. (Wengier)
- SETCOLOR command allows a syntax like "SETCOLOR 1 +"
to return the specified color number to the preset
value (as specified by "colors" setting). (Wengier)
- When using TTF output, DOSBox-X will dim the topmost
line when the window is inactive in full-screen or
menuless mode as in vDosPlus. (emendelson)
- IMGMOUNT command now accepts wildcards, such as
"IMGMOUNT A disk*.img" to mount image files matching
the given pattern. (Wengier)
- Added CuteMouse wheel mouse extension so that DOS
programs such as DOS Navigator 2 can make use of it.
It is enabled when mouse wheel movement conversion is
currently disabled. (FeralChild & Wengier)
- Implemented basic support for VMware mouse protocol
so that when used together with e.g. the VMware mouse
driver for Windows 3.x, the mouse will be seamlessly
integrated with the host system, and can enter/exit
the DOSBox-X window without having to capture/release
the mouse. Config option "vmware" is added (in [dos]
section) which allows to disable VMware mouse guest
integration. (FeralChild, Wengier, joncampbell123)
- When country number is not specified and cannot be
obtained from system, DOSBox-X will try to map the
keyboard layout to country number. The country list
is also extended. (Wengier & FeralChild)
- Added "-nolog" command-line option to disable logging
output completely, and "Disable logging output" menu
option in "Debug" menu to toggle this. (Wengier)
- Updated EGA?.CPX and KEYBOARD.SYS/KEYBRD?.SYS to the
latest version from FreeDOS. The CPX files now appear
in CPI directory of Z drive, which can be replaced by
files provided by the user. (FeralChild & Wengier)
- Fix lockup when printing in dBase IV. (Wengier)
- Fix crash/restart when running Wing Commander with
EMS memory enabled. (grapeli)
- Fix possible buffer overflow issue that may happen
in certain conditions. (maron2000)
- Fix NewWadTool 1.3 unable to play music by ensuring
that periodic timer interrupt is triggered on every
cmos_timerevent. (cimarronm)
- Fix handling of some DOS file I/O device drivers that
expect a pre-filled input-buffer on READ function and
also do not like to be called for every single byte
in that buffer may not work correctly. (leecher1337)
- Fix FPU emulation to use 8087 FENI/FDISI behavior
when cputype=8086 or cputype=80186. (joncampbell123)
- Fix FPU emulation to correctly emulate 80287 -/+inf
compare behavior even if compiled for x86 targets
where C_FPU_X86 uses the host FPU. (joncampbell123)
- Fix audio speech stuttering issue in SpaceQuest 4
v1.3 using Sound Blaster. (grapeli & rderooy)
- Fix issue with Lemmings palette swapping not working
properly. (maron2000 & grapeli)
- Updated MT32emu to version 2.6.1. (maron2000)
(Refer to https://github.com/munt/munt for details)
- Updated DOSMID to version 0.9.6. (Wengier)
- Integrated commits from mainline (Allofich)
- Indicate in BIOS memory when keyboard ACK received.
Fixes Soko-ban Revenge.
- Fix execution of small COM programs on PCjr machine
type.
0.83.23
- Fixed XGA accelerated rendering for ViRGE emulation
and 24 bits/pixel display modes. Since Windows drivers
insist on 24bpp, this is necessary for
"Truecolor (24-bit)" to display and render correctly.
- dosbox-x.conf option "vesa vbe 1.2 modes are 32bpp" is
now "true", "false" or "auto", where "auto" determines
this setting based on which S3 chipset is being
emulated. It seems the Windows drivers for ViRGE
chipsets require 24bpp for truecolor modes, in fact,
they do not even offer 32bpp as an option. Since
the Windows 3.1/95/98 drivers use VESA BIOS calls to
set video modes, this implies that the VESA BIOS on
ViRGE cards are also making the base modes 24bpp rather
than 32bpp. Note that the Windows drivers for older S3
chipsets are perfectly happy to use 32bpp unless you
select "16.7 million colors (1 Meg)" in Windows 3.1,
which is the only option in those drivers to offer
24bpp. To avoid grief with DOSBox-X users, "auto"
is the default setting.
- Added basic S3 ViRGE XGA acceleration. It's enough for
90% of the GDI functions in Windows 3.1 so far.
- Fixed S3 rectangle XGA accelerated pattern blit, when
using display memory as the pattern mask source, to
follow S3 Trio32/Trio64 documentation, instead of the
DOSBox SVN educated guess, to resolve some edge cases
where the wrong color is chosen to draw filled rectangles
in Windows 3.1. This fixes the "basement" in Microsoft
Creative Writer so that clicking around no longer leaves
white boxes on the screen.
- Extend 256-color foreground/background color behavior
from S3 86c928 to Vision864 and Vision868 as Windows
95 behavior suggests they handle the hardware cursor
the same way in 256-color mode.
- Extend "divide cursor X position by bytes per pixel"
behavior from S3 86c928 to Vision864 and Vision868
emulation as well, based on Windows 3.1 video driver
behavior.
- Gravis Ultrasound: Most I/O registers except port 3x4
are intended for 8-bit I/O. If 16-bit I/O occurs to
such registers, handle as two 8-bit I/O cycles. I
found something in the Demoscene (1997 demo "Atlantis,
Deep Like A Sea") that uses a 16-bit I/O write to write
current channel and register select in one write.
Prior to this fix, there was no music other than quiet
popping noises in DOSBox-X.
- Sound Blaster: Fixed DSP command 0x48 (Set DSP block
transfer size) to accept block size as BYTES as
standardized by Creative and convert to SAMPLES
internally. This fixes stuttering voices in Freddy
Pharkas when sbtype=sb16. (joncampbell123)
- Avoid crashes due to assertion failure when media
keys are pressed (maron2000)
- Fix CD audio playback failure (cue + mp3) when
trying to play from pregap sectors. (maron2000)
- Change default value of mt32.rate to 48kHz to match
default value of mt32.analog option. (maron2000)
- Fix a buffer overflow issue in dos.cpp (maron2000)
0.83.22
- Added Pentium 3 Processor Serial Number emulation.
Serial number can be set from dosbox-x.conf or not
set, in which case it will act as if disabled by the
BIOS. (joncampbell123).
- Added Pentium III cputype, added SSE register set,
added SSE instructions to debugger disassembler,
added some initial SSE instructions. (joncampbell123)
- Added some MSRs expected by Linux, Windows, and
tools like CPU-Z to make them happy. (joncampbell123)
- Added FXSAVE/FXRSTOR which makes Linux happy with
Pentium III emulation. (joncampbell123)
- Allow WRMSR to set time stamp counter, as it is known
though undocumented a standard since the Pentium
(joncampbell123).
- Added debugger command to show global and per-voice
status of the Gravis Ultrasound emulation. May come
in handy for programmers who wish to write their own
GUS routines, and for Trixter who brought up the
subject of determining whether a program plays music
with the GUS or treats it like a dumb sound card.
(joncampbell123).
- Added debugger command to show SSE register file, and
to set SSE register contents. (joncampbell123)
- Added debugger command to show MMX register file, and
to set MMX register contents. (joncampbell123)
- Added support for expressions within parenthesis in
debugger expression handling. (joncampbell123)
- Added & (AND), ^ (XOR), and | (OR) operators, and
<< and >> bit shift operators to debugger expression
handling. (joncampbell123)
- Added multiply (*) and divide (/) operators to debugger
expression handling. Order of operations applies, so
given mixed addition and multiplication, the multiply
is done first then the result is added. Also added
support for the modulo (%) operator to the debugger
expression handling. (joncampbell123)
- Revised debugger expression handling to correctly
parse arithmetic operators with order of operations
in mind. Prior to this fix, consecutive subtraction
would cause seemingly illogical results, for example
"10-1-1-1" would yield "9" instead of "7" because
subtraction was handled in the wrong order. This fix
also makes mixed addition and subtraction possible.
NOTICE: Remember that all numbers going in and
coming out of the expression handler are hexadecimal,
NOT decimal! (joncampbell123)
- Fixed simple expression handling in the debugger.
Revised hexadecimal vs register parsing so that
hexadecimal numbers that happen to start with
the name of certain CPU flag registers does not
cause confusing results. Prior to this fix,
hexadecimal numbers like "dfe" or "af0" were
impossible to enter without leading zeros or
quotes because the parser would confuse the
first digits with the DF and AF bits of the FLAGS
register. (joncampbell123)
- Added menu options "AMD Athlon 600MHz" and "Pentium
III 866MHz EB" within the group "Emulate CPU speed"
(under "CPU") for CPU speeds to emulate. (Wengier)
- Added support for archive, hidden, system attributes
on mounted local and overlay drives for non-Windows
platforms by using special file(s). (Wengier)
- Added config option "special operation file prefix"
(in [dos] section) to specify an alternative file
prefix for DOSBox-X's special operations on mounted
local and overlay drives. (Wengier)
- Added code page 3021 for the MIK character set used
by the Bulgarian language (as in FreeDOS). (Wengier)
- Added language file for the Brazilian Portuguese,
available from Windows installer. (altiereslima)
- For piping (|), DOSBox-X will now also try C: drive
as a temporary piping path if current directory is
read-only and the environment variable %TEMP% (or
%TMP%) is not set. (Wengier)
- For clipboard copy, CR+LF will now be used instead
of LF on Windows for better compatibility. (Wengier)
- Disk images are automatically mounted as read-only
(instead of failing) now if the image files are
read-only and the users do not explicitly specify
read-only mode for the disk images. (Wengier)
- The default value of config option "autofixwarning"
(in [dos] section) is now "false", and it is now
changeable via CONFIG command. (Wengier)
- The default output for Linux SDL1 builds is changed
from opengl to surface, unlike Linux SDL2 builds
whose default output remains opengl. (Wengier)
- Native Windows menus is supported in Windows SDL2
builds just like Windows SDL1 builds. It is possible
to force SDL-drawn menus for both Windows SDL1 and
SDL2 builds at compile time. (Wengier)
- Setting "windowposition" to "-" in the configuration
will leave DOSBox-X window position as is instead of
a specific position or being centered. (Wengier)
- For printing, the SarasaGothicFixed TTF font will
also be searched for DBCS code pages. (Wengier)
- Added config option "showdbcsnodosv" (in the [dosv]
section) which when set to true enables rendering of
Chinese/Japanese/Korean characters for DBCS code
pages in non-DOS/V, non-PC98, and non-TTF mode.
Video capturing started from TTF output will enable
DBCS characters when possible. (Wengier)
- Changing DBCS code pages is supported for standard
modes (i.e. non-DOS/V, non-PC98 and non-TTF modes)
using CHCP command. (Wengier)
- Fixed issues with certain DBCS characters for the
DOS/V system. (Wengier)
- Fixed slow blinking text in TTF output. (Wengier)
- Fixed copying box drawing characters to clipboard
not working in non-TTF JEGA mode. (Wengier)
- Fixed background for the Configuration Tool when
the TTF output is active. (Wengier)
- Fixed DBCS characters not showing up when capturing
screenshots in TTF CJK mode, or they do not show up
properly in the Configuration Tool when "autodbcs"
is set to "false" in the configuration. (Wengier)
- Fixed media keys presses by ignoring these keys in
Windows SDL1 builds. (maron2000)
- Fixed IOCTL & ASPI interfaces for mounting physical
CD drives on the Windows platform. (Wengier)
- Fixed the issue of loading scalers in the previous
version. A message box will only show up if you
append "prompt" to the scaler option. (Wengier)
0.83.21
- Release notes for this version:
https://dosbox-x.com/release-0.83.21.html
- Improved clipboard copying & pasting for different
code pages including box-drawing characters in DBCS
code pages. Also, for the J-3100 mode, the selected
text will now be highlighted when you try to select
text for copying. (Wengier)
- Improved IME support for Chinese/Japanese/Korean
languages on Windows builds. (Wengier)
- Pausing the emulation will automatically release
the mouse and prevent mouse capture. (Wengier)
- For Configuration Tool, a "..." button is added to
properties which have limited numbers of values so
that when clicking their possible values will be
shown in a new dialog and can be selected directly.
Also, more settings will be applied immediately when
modified from the Configuration Tool. (Wengier)
- For Windows SDL1 builds, DOSBox-X will now try to
prevent the Windows menus from separating into more
than one lines due to small window width. (Wengier)
- If a scaler as specified in the config may not work
as expected and if not forced, DOSBox-X will show a
a message box asking whether to load it. (Wengier)
- Config option "pixelshader" now allows a shader file
name without the .fx extension, or a shader file in
the current directory. (Wengier)
- Added support for ENET reliable UDP as an option for
modem and null-modem emulation. You can enable it
with "sock:1" option for modems/null-modems that are
connected with serial ports (COM1-COM9), such as
"serial1=modem listenport:5000 sock:1" for COM1 to
listen to port 5000 with reliable ENET UDP instead
of TCP connection. The feature is ported from DOSBox
Staging. (sduensin, GranMinigun, kcgen, Wengier)
- Added new command-line option "-o" for providing
command-line option(s) if programs(s) are specified
to start when you launch DOSBox-X. An example:
dosbox-x program.exe -o "opt1 opt2". (Wengier)
- Added special properties to CONFIG command including
"cd", "date", "errorlevel", "random", "time", and
"lastmount" so that commands like "CONFIG -GET cd"
and "CONFIG -GET errorlevel" will get current DOS
directory and ERRORLEVEL value. The returned value
will also be saved to %CONFIG% variable. (Wengier)
- Added "Enter Debugger Command" button to "DOSBox-X
logging output" and "Code overview" windows (from
"Debug" menu") for users to enter some debugger
command(s) and see the result. (Wengier)
- Added debugger commands DATE and TIME to view or
change DOSBox-X's internal date and time, using the
same date and time formats as the shell DATE and
TIME commands, e.g. "TIME 10:11:12". (Wengier)
- Added config option "badcommandhandler" (in [dos]
section) which allows to specify a custom error
handler program before error message "Bad command
or file name" shows up in the DOS shell. (Wengier)
- Added config option "stop turbo on key" (in [cpu]
section) which allows to automatically stop the
Turbo (fast forward) mode when a keyboard input
has been detected. (Wengier)
- Added config option "fat32setversion" (in [dos]
section) which controls whether DOSBox-X should
automatically set reported DOS version to 7.0/7.10
when it's less than 7.0/7.10 and mounting LBA/FAT32
disk images is requested. It defaults to "ask" so
that DOSBox-X will ask in this case. (Wengier)
- Added config option "j3100colorscroll" (in [dosv]
section) which defaults to "false" and allows the
J-3100 version of SimCity and VGA version of the
Toshiba Windows 3.1 to run, whereas CGA/EGA version
of the latter requires a "true" setting. (nanshiki)
- Added config options (in "ethernet, slirp" section)
"tcp_port_forwards" and "udp_port_forwards" for port
forwarding when using the Slirp backend. (kcgen)
- Added code pages 737 (Greek) and 775 (Baltic) for
the guest-to-host code page conversions. (Wengier)
- Added UTF8 and UTF16 commands to convert UTF-8 and
UTF-16 text to view in the current code page. For
example, the command "UTF8 < UTF8TEXT.TXT" will
output converted text UTF8TEXT.TXT in the current
code page, and for UTF16 command there are optional
/BE & /LE options to specify endianness. (Wengier)
- Added support for DBCS characters located in UNC
network paths of the form \\COMPUTER\FOLDER\FILE
on the Windows platform. (Wengier)
- Added hidden code page 951 for Big5-HKSCS encoding
or Big5 Unicode-At-On (Big5-UAO) encoding. Config
option "uao" is added in [ttf] section so that if
set to "true" code page 951 will use the Big5-UAO
encoding instead of the Big-HKSCS encoding, the
latter being the default for CP951. If ChinaSea is
enabled, ChinaSea characters will be used instead
of original characters in these encodings. (Wengier)
- Added -nl option for MOUNT command to automatically
find the next available drive letter to mount if
the specified drive is already mounted. This allows
multiple directories to be mounted when DOSBox-X
starts with multiple [name] arguments. (Wengier)
- Added HISTORY command to display or clear command-
line history for the internal DOS shell. (Wengier)
- Added ASSOC command to view/change file extension
associations. You can define a command or program
to open a file with a specific file extension, e.g.
"assoc .txt=edit" to open .TXT files with the EDIT
command when entering the .TXT file name from the
DOS command line. Wildcards are allowed, such as
"assoc .*=dir", although in such case exceptions
including "assoc .com=com", "assoc .exe=exe", and
"assoc .bat=bat" are probably desired. (Wengier)
- Commands CHOICE and COUNTRY are external commands
that appear on the Z drive (Z:/DOS/CHOICE.COM and
Z:/SYSTEM/COUNTRY.COM respectively) now rather than
internal shell commands. COUNTRY command now also
affects thousand and decimal separators. (Wengier)
- The internal Virtual Drive Z: can now be rescanned
just like mounted local drives. (Wengier)
- You can now change most config options in [printer]
section of the configuration for the virtual printer
with CONFIG -set commands. (Wengier)
- Added missing ChinaSea characters in code page 950
with ChinaSea/Big5-2003 extension enabled. (Wengier)
- Added support for Bash-shell completion for DOSBox-X
on non-Windows platforms. (rderooy & FeignInt)
- Improved DBCS support for DOS commands including
ATTRIB, ECHO, TYPE, MORE, and TRUENAME. (Wengier)
- Improved checking of segment limits. (joncampbell123)
- Mac OS X builds from now on will use an in-tree tool
to replace dylib references in all executable files.
XCode install_name_tool is no longer used, it became
a hypochondriac and is sitting in the corner screaming
about link edit data that doesn't fill a __LINKEDIT
segment. It is once again possible to make Mac OS X
ARM releases and to use dylib files from Brew doing
so. (joncampbell123)
- Fix IPL1 partition choice debug message to actually
show the partition index chosen, not the -partidx
option variable, which if not given by the user, is
-1 and was reported as a very large unsigned
number. (joncampbell123)
- Fixed command-line options -starttool & -startmapper
not showing messages from specified language file
for Configuration Tool and Mapper Editor. (Wengier)
- Fixed an issue with RENDER_Reset function while
loading previously saved states. (yetmorecode)
- Fixed E_Exit "RET from illegal descriptor type 0"
when running DirectX diagnostic program (dxdiag)
from a guest Windows 98 system. (Wengier)
- Fixed "parallel?=file openwith:xxx" not working if
a file name is not provided. (Wengier)
- Fixed crash in the following config combination:
output=ttf, machine=pc98, dosvfunc=true. (Wengier)
- Fixed Disney sound source connecting to parallel
port not working in the previous version. (Wengier)
- Fixed NET command from Windows for Workgroups 3.11
not working from the internal DOS shell. (Wengier)
- Fixed MODE command options like "rate" and "delay"
not working if entered in upper cases. (Wengier)
- Fixed command-line parameters (when launching
DOSBox-X) containing Chinese characters in code page
950 not working in Windows SDL2 builds. (Wengier)
- Integrated commits from mainline (Allofich)
- Improve BIOS FDD motor timeout counter, most
notably for earlier PCs. Fixes a Chinese variant
of Space Harrier.
0.83.20
- Release notes for this version:
https://dosbox-x.com/release-0.83.20.html
- Implemented support for Pentium II cputype (with
the setting "cputype=pentium_ii" in [cpu] section),
and added Pentium II SYSENTER/SYSEXIT instructions
to normal core and debugger disassembler. The two
instructions are supported for Pentium II cputype.
CPUID for Pentium II will now report stepping 3 and
model 3 which is a minimum requirement for OSes to
attempt to use SYSENTER/SYSEXIT. Silencing for
RDMSR/WRMSR and SYSENTER/SYSEXIT debug messages is
removed while CPU "debug spew" is silenced by
default. MSRs related to Intel microcode are added
because both Linux and Windows ME probe those MSRs
if Pentium II emulation reports stepping 3 model 3.
The microcode MSRs are silently ignored. Moreover,
the MSR register 0x0000001B has been added to
Pentium II emulation. DOSBox-X does not emulate a
local APIC but Windows ME assumes that MSR is
present and reads/writes it on startup if DOSBox-X
reports itself as a Pentium II. (joncampbell123)
- Added support for DCGA and Toshiba J-3100 emulation
modes by importing code from DOSVAXJ3 by nanshiki.
The J-3100 emulation mode can be enabled with the
option "dosv=jp" along with a non-off setting of
"j3100" option in [dosv] section. For example, with
"j3100=on" or "j3100=auto" (and "dosv=jp") J-3100
system will be enabled and activated at start. With
"j3100=manual" (and "dosv=jp") J-3100 system will
be enabled and not activated at start, but there is
now a DCGA command to enter DCGA (either English or
J-3100 DCGA, depending on if J-3100 is enabled)
mode from other video modes. (nanshiki & Wengier)
- Added support for unit tests based on Google Test
framework (gTest/gMock) to ensure code stability.
Unit tests can be started with command-line option
"-tests" in the debug builds. Some unit tests are
ported from DOSBox Staging. (Wengier)
- Added SERIAL and PARALLEL commands to view/change
the current configuration of serial/parallel ports.
Type "SERIAL /?" and "PARALLEL /?" for further info
about the two commands. Commands like "config -set
serial?=..." and "config -set parallel?=..." will
also auto-call these commands. (sduensin & Wengier)
- Added IMGSWAP command to swap disks for drives.
e.g. "IMGSWAP D" to swap D: drive to the next swap
position, and "IMGSWAP A 3" to swap A: drive to
the 3nd swap position. (Wengier)
- Added DOS commands including COMP, DISKCOPY, EDLIN,
FC, FILES, PRINT, and SHUTDOWN (most from FreeDOS)
to the built-in Z: drive. Updated or recompiled
EDIT and EDLIN commands to support LFNs. (Wengier)
- The CAPMOUSE command without a parameter now shows
whether the mouse is captured/released. (Wengier)
- The command "config -set" is now case-insensitive
for property names. Also, if an option cannot be
changed at run-time, DOSBox-X will ask whether to
restart itself to apply the new setting. (Wengier)
- Do not read real-mode data areas from mouse event
handling if running a protected mode guest OS like
Windows NT, and disable INT 33h functions when DOS
kernel is shut down to boot into a guest OS. Moving
mouse while Windows NT is running should no longer
cause page faults and crashes. (joncampbell123)
- The setting "mountwarning = false" will now silence
more warning messages during mounting. (Wengier)
- The code page setting of "country" option will now
be ignored for PC-98, JEGA and DOS/V modes. These
modes will enforce the desired code page. (Wengier)
- Added support for loading the ASC16/ASCFONT.15/
ASC24/ASCFONT.24? font files from the UCDOS/ETen
Chinese DOS systems for the options "fontxsbcs",
"fontxsbcs16" and "fontxdbcs24" in [dosv] section
of the config file for DOS/V systems. (Wengier)
- Improved auto-detection of box-drawing characters
when using DBCS code pages. (Wengier)
- Applied UTF-8 conversions to file browse dialog
boxes for selecting files containing Unicode
characters (e.g. CJK characters). (Wengier)
- For screenshot and MIDI/OPL recording, DOSBox-X
will now display a message box showing the saved
file name when the recording has been completed.
The full paths will also be logged. (Wengier)
- Added confirmation message while trying to load a
Direct3D pixel shader which may not be needed or
may have undesired effect. (Wengier)
- Added warning message if DOS/V or Japanese PC-98/AX
machine type is selected and a language file with
an incompatible code page is specified. (Wengier)
- Added "AMD K6 166 MHz", "AMD K6 200 MHz" and "AMD
K6-2 300 MHz" menu options within the menu group
"Emulate CPU speed" (under "CPU"). (Wengier)
- Added a TrueType font selection page into Windows
installer, which will show when TrueType font (TTF)
output is selected for new installations. (Wengier)
- Added MMX instruction PSHUFW and added typecasts
to some MMX instructions in case compilers cannot
properly shift uint64_t by uint8_t otherwise. Most
Pentium-level MMX instructions (such as MOVD, MOVQ,
and EMMS) are added to the debugger disassembler
and support for the disassembler to represent MMX
registers. (joncampbell123)
- Added code to normal core to flush paging TLB
whenever handing a non-recursive guest page fault.
The guest OS will likely update the page tables
to resolve the fault. The Linux kernel will
constantly get "stuck" whenever you run a command
without this change. (joncampbell123)
- Added code to make sure DOS kernel drives and drive
letters have been unmounted and deallocated before
booting a guest OS or shutting down DOSBox-X
(joncampbell123).
- Added ability to change floppy images with drive
number (0 or 1) only. (Wengier)
- Added INT 13h AH=16h, detect disk change. This can
be controlled by config option "int 13 disk change
detect" (in [dos] section) in case any older OS can
not handle it. INT 13h AH=15h will report a floppy
drive with change line support if enabled. MS-DOS
seems to work just fine with it. (joncampbell123)
- Added menu item "Enable extended Chinese character
set" in "Video" => "TTF options" to toggle setting
for the Simplified Chinese (GBK extension) and
Traditional Chinese (ChinaSea extension). (Wengier)
- Added config option "chinasea" (in [ttf] section)
which when set to "true" allows ChinaSea (中國海字集)
and Big5-2003 extension of the original Big5-1984
charset for Traditional Chinese TTF output. This
requires the use of a TTF/OTF font containing such
extended characters to correctly render them; the
included SarasaGothicFixed TTF font is updated to
support such characters.Certain Traditional Chinese
DOS software like the Hyper Editor 5.03 (漢書5) makes
use of ChinaSea characters. Also moved "gbk" config
option from [dosv] to [ttf] section. (Wengier)
- Added config option "forcesquarecorner" (in [sdl]
section) which when set to "true" will force to
disable rounded corners on Windows 11. (Wengier)
- Added code to INT 18h emulation (IBM PC mode) to
jump to ROM BASIC if the user provided an IBM
ROM BASIC image to load. (joncampbell123)
- Added config option "ibm rom basic" in [dosbox]
section which allows users to load a ROM image
containing IBM PC ROM BASIC, for disk images
and MS-DOS setups that need it. (joncampbell123)
- Added stub IBM ROM BASIC points in the BIOS area
so that when BASIC(A).COM from MS-DOS 1.x and 2.x
are run, a polite message is displayed instead of
invalid code and crashes. (joncampbell123)
- 8086 and 80186 CPU types no longer check segment
limits. (joncampbell123 & Allofich)
- Put in undocumented behavior in opcode 0x8e for
8086 and 80186. (Allofich)
- Made 8086 treat opcodes C0,C1,C8,C9,F1 as aliases
of C2,C3,CA,CB,F0, and opcodes 0x60-0x6F as aliases
of opcodes 0x70-0x7F. (Allofich)
- Adjusted multiple-prefix bug for 8086/286 to only
apply when REP or REPZ is used. (Allofich)
- Fixed 0x0F opcode being valid on 80186 core when
it should be invalid. (Allofich)
- Fixed CGA modes to always use a character height
of 8, rather than reading it from address 485h.
Fixes corrupt graphics in the PC Booter version
of Apple Panic. (Allofich)
- Fixed underflow when INT 13 AH=2 called for
sector 0. (Allofich)
- Fixed infinite loop when trying to run a 32-bit
program with the 8086 CPU type. (Allofich)
- Fixed INT 13h emulation to no longer call the DOS
kernel "DriveManager" if the DOS kernel has been
shutdown. This fixes memory corruption issues in
the guest OS system run by the BOOT command that
can occur when the "swap disks" command is used in
the emulator. (joncampbell123)
- Fixed DTA memory leak from FAT driver if FAT drive
was mounted when booting into a guest OS. (joncampbell123)
- Fixed a crash on unmount that occurs if IMGMOUNT
is used to mount multiple floppy disk images to
a drive letter. (joncampbell123)
- Fixed possible crash with printing. (jamesbond3142)
- Fixed possible freeze when shutting down Windows 9x
after changing a CD image from the menu. (Wengier)
- Fixed the default U.S. keyboard layout for the
HX-DOS build. (Wengier)
- Fixed copying full-screen or multi-line text from a
DBCS codepage in TTF output or PC98 mode. (Wengier)
- Fixed possible crash at start with getsysfont=true
when a font may not be obtained on some Chinese
Windows systems. (Wengier)
- Fixed TTF color issue with some DOS GUI programs by
initializing the color scheme when with default
COLORS= setting in EGA or VGA mode. (Wengier)
- Fixed some Direct3D pixel shaders not working (such
as GS2x and CRT-geom-blend). (Wengier & depaljas)
- Fixed config option windowposition=x,y not working
in Linux/macOS SDL1 builds. (Wengier)
- Fixed copying files from the virtual drive Z: not
working when using the 4DOS shell. (Wengier)
- Fixed some issues in MORE command. (Wengier)
- Fixed "DIR>NUL" freeze/crash when only disk or CD
images are mounted. (nanshiki)
- Fixed BIOS screen when resetting the machine with a
non-TTF output and DOS/V mode enabled. (Wengier)
- Fixed the key `/~ not working when IME is enabled
on a non-Japanese keyboard. (Wengier)
- Fixed display glitches in the game "Continuing
adventures of Cyberbox". (Wengier)
- Fixed unusable joystick with config options like
joy1response1 set to certain values. (Baderian)
- Make memory B0000-B7FFF unmapped for the CGA
emulation. Fixes "Backgammon 5.0" detecting that
an MDA is also present when using CGA. (Allofich)
- Make floppy I/O delay separately configurable from
hard drive delay, and make it slower than before
by default. It is adjustable via the "floppy drive
data rate limit" config option. (Allofich)
- Always return bit 6 of port 61h as set for PC and as
clear for PCjr and Tandy. Allows Zaxxon to load in
PC mode. (Allofich)
- Video emulation for PC-98 mode (for 400-line modes)
is now 16:10 instead of 4:3. 480-line PC-98 modes
are still 4:3. (joncampbell123)
- PC-98 EGC emulation: Add generic ope_xx handler for
the remaining block of undefined/undocumented EGC
ROPs. This fixes "Atomic Punker" which uses EGC ROP
0xBE for sprite rendering. (joncampbell123)
- Don't run mouse setup code if there is no emulated
mouse. (Allofich)
- Integrated commits from mainline (Allofich)
- Add proper opl3 handling of the waveform select
to dbopl.
- Correct disassembly of some FPU instructions.
0.83.19
- Reorganized the "List network interfaces" and "List
printer devices" dialogs (under the "Help" menu) to
allow the use of scroll bars. (Wengier)
- Added menu option "Reset TTF color scheme" to reset
the current color scheme for TTF output. (Wengier)
- Added config option "righttoleft" in [TTF] section
which when set to "true" will cause DOSBox-X to
display text from right to left (instead of left to
right) for the TTF output. It can also be toggled
from the menu ("Video" => "TTF options" => "Display
text from right to left"). (Wengier)
- Added config option "vga fill active memory" which
when set to "true" will fill inactive video memory
regions with RAM rather than mapping them as empty.
This allows the ETen Chinese DOS system (倚天中文系統)
3.5/2000 (e.g. ET16V and ET24VA) to run. (Wengier)
- Added config option "middle_unlock" ([sdl] section)
to control whether to unlock the mouse with middle
mouse button click. (Wengier)
- Added config option "dosvfunc" in [ttf] section to
support DOS/V applications when country information
is set to Japan in TTF output. (nanshiki)
- Added "VTEXT" command to view or change the current
V-text mode for the DOS/V emulation. Also improved
the font support for 24-pixel font DOS/V mode, such
as supporting HZK24? fonts for Simplified Chinese
DOS/V mode and STDFONT.24 from ETen Chinese system
for Traditional Chinese DOS/V mode. If a Chinese
font is specified via "fontxdbcs", "fontxdbcs14" or
"fontxdbcs24" options, it will be loaded before
system font even with "getsysfont=true". (Wengier)
- Commands like 80x25, 80x43, ... now use internal
function for better compatibility with the TrueType
font (TTF) output. (Wengier)
- MODE command without a parameter will now print the
current lines/columns instead of usage. (Wengier)
- INTVEC debugger command now correctly outputs
addresses when in protected mode. (Allofich)
- Fix horizontal lines in the debugger window being
rendered as unrelated characters in some code
pages. (Allofich)
- INT 21 AX=4B03 now sets AX to 0000 like MS-DOS
does. Fixes missing music in "聊齋誌異之幽谷傳奇"
(Liáozhāi zhì yì zhī yōugǔ chuánqí) (Allofich)
- Use 0x1E to 0x3E for the keyboard buffer of the CGA
machine, which fixes the controls locking up in the
PC booter version of Apple Panic. (Allofich)
- Allowed machine types "pcjr_composite" and
"pcjr_composite2", similar to "cga_composite" and
"cga_composite2", instead of having to switch the
composite type manually. (Wengier)
- If machine is PCjr, place PC BIOS reset code at
F000:0043 to match that of the real BIOS.
- Fix PCjr NMI handler to load DS with segment 0x0040.
Fixes crashes in SHAMUS. (Allofich)
- Fix PCjr NMI handler to use 8086-level instructions
when loading DS with segment 0x0040 so that it
works properly with cputype=8086.
- Remove useless check for signed divide quotient
of 0x80/0x8000/etc. (the result was -0x80/0x8000/etc
anyway. Add code to check specifically for these
values after signed divide if cputype=8086 and
trigger divide overflow exception, to match behavior
described for the 8086 processor.
- Modify exception handling so that for cputype=8086
the return address for an exception handler points
at instruction after fault location.
- Fix IDIV instruction incorrectly raising a divide
error exception for some borderline values. Fixes
Microsoft Flight Simulator. (Allofich)
- IBM PC BIOS emulation fixed to place key pieces of
code and entry points at fixed legacy locations
required by some older DOS games, instead of
by dynamic allocation. Added code to BIOS allocation
to reserve F000:E000 or higher for fixed allocation
and force dynamic allocation below that address to
prevent further conflicts should others submit
pull requests for additional fixed locations. This
fixes some games like "聊齋誌異之幽谷傳奇" (Liáozhāi
zhì yì zhī yōugǔ chuánqí) which appear to assume
some of these fixed BIOS addresses and will
crash if they are wrong.
- Added tool EMSMAGIC.COM as alternative EMS manager,
which can be dynamically installed or uninstalled
with the setting ems=false. (Wengier)
- If a program is provided in the command-line when
launching DOSBox-X, it will now be executed after
any commands in the [autoexec] section by default.
A command-line option "-prerun" is added to force
the program run before any commands in [autoexec]
section like before. (Wengier)
- Added auto-detection for single-wide DBCS-encoded
characters for the TTF output (non-PC98). (Wengier)
- Improved the menu option "Restart DOSBox-X with
language file..." (under "Main") for switching
between DBCS languages. (Wengier)
- Disabled the Alt+F4 key for closing the DOSBox-X
window in MinGW SDL2 builds. (Wengier)
- Fixed program or config file containing Unicode
characters passed from command-line when launching
DOSBox-X in Windows SDL2 builds. (Wengier)
- Fixed issue with DELETE key in PC-98 mode. (Wengier)
- Fixed COLORS config option (in [ttf] section) not
working in the previous version. (Wengier)
- Fixed issues after resetting the virtual machine
when using DBCS language files. (Wengier)
- Fixed some issues related to system IME support for
CJK (Chinese/Japanese/Korean) languages, for both
Windows SDL1 and SDL2 builds. (nanshiki & Wengier)
- Fixed bugs in the region memory allocator C++ class
that claimed the entire free block even if the
size wanted was smaller. Added field to remember if
the allocated block was allocated for fixed or
dynamically allocated memory. Cleaned up allocator
code and removed redundancy.
- Fix SELINFO command not showing output correctly
in the debugger window. (Allofich)
- Better CMOS register B and C emulation. (Allofich)
- Integrated commits from mainline (Allofich)
- Support for DMF floppy disk images.
- Zero-out DX in EXEC overlay command.
- Improve stack check for wrap-around cases.
- Change to misc_output for SVGA_S3Trio.
0.83.18
- Cleaned up and more accurately worded CMOS-related
log messages. (Allofich)
- Fixed the names of virtual files and files on mounted
FAT drive images being logged as "(null)". (Allofich)
- Fixed packed structure alignment problem with MSVC
(Microsoft C++) builds regarding some disk image
formats. These problems prevented VS2019 builds from
mounting hard disk images. (Allofich)
- REP STOSB will correctly move one byte if one byte
remains to be processed aka CX == 1, this is needed
for FD98.COM self clearing code to work properly. (nanshiki)
- Fixed IOCTL support for character device drivers. (nanshiki)
- Fixed ANSI ESC [6n escape handling to correctly
report cursor position as 1-based count, not 0-based
count. (nanshiki)
- PC-98 INT DCh emulation fixed to better represent the
function key shortcuts as real DOS does. (nanshiki)
- Emulator fix for HX-DOS builds. (Wengier)
- Integrated commits from mainline (Allofich)
- Fix the return value of register al from INT10 ah=0x0F
for non EGA/VGA machines.
0.83.17
- Added FISTTP instruction to experimental cputype (LBi)
- Updated debugger to support and decode fisttp, fcomi,
fcomip, fucomi, fucomip (LBi)
- Added support for Chinese/Japanese/Korean IMEs on
Windows/Linux SDL2 builds. (nanshiki)
- Added cputype=experimental, which is the same as the
highest CPU emulation level but with additional
instructions from newer processors that do not exist
in the era emulated by DOSBox-X i.e. FISTTP which is
an SSE3 Pentium 4 instruction. (joncampbell123)
- Added support for 286/386 call gates to JMP
instruction (joncampbell123)
- Added -bd <n> option to IMGMOUNT to allow mounting
partitions from a hard disk image mounted as an
INT 13h hard disk. <n> is the numeric value the
hard disk image was mounted to. In this way, it
becomes possible to mount any or all partitions
in a hard disk image. WARNING: To safely mount
multiple partitions, use -o partidx=<n> to specify
each partition you mount by index. (joncampbell123)
- If a drive has no volume label, and user runs
LABEL without specifying one, do not ask whether
or not to delete the volume label because there
is in fact no volume label to delete. (joncampbell123)
- Added FreeDOS utilities DEFRAG, FORMAT, FDISK,
CHKDSK, and SYS to the built-in Z drive. KERNEL.SYS
is not provided so that the user can provide what
they consider the best version of the FreeDOS kernel
to format with if they use FORMAT /S (joncampbell123)
- INT 29h routes output through ANSI.SYS driver in
both IBM PC and PC-98 mode, unless ansi.sys=false
is set in the config setting. (joncampbell123)
- Integrated commits from mainline (Allofich)
- Fix regression in r4444: Hercules machine type
cursor translation.
- Remove redundant signature for ET4K that is now
done in video BIOS.
- Implement mouse driver function 0x27, fixes
Alive - Behind the Moon.
- Add log message for unusual cases where an
executable unsafely places its initial stack outside
the memory block.
0.83.16
- Release notes for this version:
https://dosbox-x.com/release-0.83.16.html
- Added support for extended MS-DOS partitions that
reside in extended partitions. These partitions
can be manually mounted using -o partidx=n where
n is 4 or larger. To assist in partition indexes,
the FAT driver will also print the partition
table to your log file and console when asked to
print debug information. (joncampbell123)
- Added dosbox-x.conf options to control VESA BIOS
window size and window granularity. This allows
DOS development to test VESA BIOS support against
SVGA cards that use window sizes and/or window
granularity other than 64KB including older SVGA
hardware by Paradise and Cirrus. Note that use
of these options is intended solely for DOS
development and will break S3 drivers that do not
use the VESA BIOS extensions. (joncampbell123)
- Fixed VESA BIOS S3 modelist to match the VBE 1.2
standard modelist properly, including the addition
of modes 0x119-0x11B. (joncampbell123)
- Added machine=vesa_oldvbe10 to emulate a VESA
BIOS that follows version 1.0 of the standard.
Specifically, in version 1.0, mode information
like XResolution was OPTIONAL and the VESA BIOS
was allowed not to fill it in since you could
assume the information from the standard video
mode number you applied. This setting emulates
a VESA BIOS that does NOT provide this information,
for testing purposes. Also, machine=vesa_oldvbe is
fixed to never report a LFB, since that was not yet
defined for VBE 1.2. (joncampbell123)
- Reorganized Windows installation to 2 installers
installing 32-bit and 64-bit DOSBox-X binaries,
for WinXP+ (all) and Vista+ 64-bit respectively,
reducing the sizes of installers significantly
while adding the SarasaGothicFixed TTF font and
a language selection page for choosing existing
language translations (with new language files
for French and Traditional Chinese). (Wengier)
- DOSBox-X will now search for more paths (such as
user config directory and "languages" subfolder)
for loading language files before failing, and
on Linux and macOS platforms will also search for
additional directories such as /Library/Fonts/
(Linux) or /Library/Fonts/ (macOS) for TrueType
fonts when using the TTF output. (Wengier)
- DOSBox-X will try to load the SarasaGothicFixed
TTF font when no external TTF font is specified
and a CJK code page detected at start. (Wengier)
- Added Shift+Tab shortcut in Debugger to switch to
previous window complimenting existing function of
Tab switching to the next window. (cimarronm)
- LH/LOADHIGH command can now load programs into UMB
memory if it is available. Also added "shellhigh"
config option to decide whether to load builtin
command shell to UMB memory (with default setting
of "auto", it is enabled if reported DOS version
is at least 7, similar to MS-DOS 7+). (cimarronm)
- HELP command is now an external command appearing
on Z drive rather than an internal shell command
(it is never a DOS internal command). (Wengier)
- Command-line options -eraseconf and -erasemapper
will now erase loaded config file and mapper file
respectively and continue, whereas -resetconf and
-resetmapper will erase user config file or user
mapper file and exit as before. (Wengier)
- Added menu group "3dfx" in "Video" menu to toggle
the low-level Voodoo card emulation and high-level
Glide emulation at run-time. (Wengier)
- Added menu options "Restart DOSBox-X instance" and
"Restart DOSBox-X with language file" in "Main"
menu to reboot the current DOSBox-X instance or
reboot the DOSBox-X instance with the specified
language file automatically. (Wengier)
- Added menu options "Show code overview" and "Show
logging text" in "Debug" menu to show the overview
of the current code and the output of DOSBox-X's
current logging text in debug builds. (Wengier)
- Added config option "customcodepage" in the [dos]
section to allow a custom code page, in the format
"customcodepage=nnn,codepagefile" in TrueType font
(TTF) output. CHCP command also supports additional
parameter to specify a code page file. Also added
builtin support for code pages 1250-1258. (Wengier)
- Added config option "transparency" in [sdl] section
to change the DOSBox-X window transparency (from 0
to 90, low to high transparency) on the Linux/macOS
SDL2 and Windows platforms. (Wengier)
- Added config option "hidenonpresentable" in [dos]
section to toggle whether to filter out file names
on local drives that are non-representative in
current code page. (Wengier)
- Added config options "pc-98 try font rom" and
"pc-98 anex86 font" for the PC-98 emulation to
customize the font file to load. If former option
is set to "false", then DOSbox-X will not try to
load FONT.ROM first for PC-98, and latter option
specifies an Anex86-compatible font to load for
PC-98 (before trying FREECG98.BMP). (Wengier)
- Added support for composite support for PCjr mode
by porting patch from NewRisingSun. (Wengier)
- Non-Japanese DOS/V systems will now use 19-pixel
VGA fonts rather than 16-pixel VGA fonts for SBCS
characters to look better. (Wengier)
- You can now also load HZK14/HZK16 font files (for
14- and 16-pixel height) and STDFONT.15 font file
via the "fontxdbcs" and "fontxdbcs14" options for
Simplified Chinese DOS/V (dosv=cn) and Traditional
Chinese DOS/V (dosv=tw) emulations. (Wengier)
- Improved the DOS/V font acquisition function on
the Linux platform (both SDL1 & SDL2), such as
adding support for 14-pixel height fonts (used by
Configuration Tool & Mapper Editor), and enhancing
support for Chinese characters acquisition (e.g.
WenQuanYi support for the Traditional Chinese). A
config option "getsysfont" is added which when set
to "false" will disable the font acquisition on
Windows and Linux platforms. (Wengier & nanshiki)
- Implemented support for inputting CJK characters
on Linux SDL1 builds using Linux system IMEs. Code
imported from SDL-IM-plus by nanshiki and confirmed
to work on Linux/X11 platform by him.
- Added support for inputting Japanese and Korean
characters using system input method (IME) using
the default "windib" video driver in Windows SDL1
build (in addition to "directx" driver). (nanshiki)
- Fixed CJK characters not showing correctly for the
SDL-drawn menu with OpenGL outputs if "language"
config option is used instead of -lang command-line
option. Thank nanshiki for catching this. (Wengier)
- Fixed setting "machine=amstrad" cause DOSBox-X to
crash on non-Windows platforms. (cimarronm)
- Fixed bug related to DBCS vector table. (nanshiki)
- Fixed running e.g. built-in DEBUG command from a
drive other than Z may not work. (cimarronm)
- Fixed the command "FOR %I ..." not working when
executed from the command line. (Wengier)
- For audio/video recording, DOSBox-X will display
a message box showing the saved file name when the
recording has been completed. (Wengier)
- Mapper Editor will try to show the actual mod keys
for mod1/mod2/mod3 when clicked. (Wengier)
- Removed the special DOS function at Int21h/AH=2B/
CX=0x4442h/DX=0x2D58h in favor of the DOSBox-X
Integration Device at I/O ports 28h-2Bh which works
for both integrated DOS and guest OS environments.
- Enabled MT-32 emulation on ARM-based Mac OS X
builds (joncampbell123)
- For Configuration Tool, ensure mouse coordinates
are adjusted accordingly with forced scaler. (aybe)
- Fixed a bug in the Int21/AH=36h (get disk space)
function for returning very large CX values, and
that non-zero values are returned when the free
space is 0 on mounted local drives. (Wengier)
- Fixed "FILES" always fixed to 200 as reported by
the "DOSINFO" tool, in spite of "files" setting in
[config] section of the config file. (Wengier)
- Refined the handling of international keyboards and
fixed some issues in version 0.83.15. (maron2000)
- Fixed initialization order that prevented Bochs
port E9h emulation from working. (joncampbell123)
- Fixed menu options in system menu not working in
Windows SDL1 builds with "windib" driver. (Wengier)
- Fixed issue that the mouse cursor not showing in
the game "Power Dolls". (Wengier)
- Fixed non-English accents may not show correctly
with a SBCS code page in TrueType Font (TTF) output
(introduced in version 0.83.15). (Wengier)
- Fixed line endings for SBCS language files such as
English and Spanish translations. (Wengier)
- Fixed resetting the TTF screen when exiting from
Configuration Tool or Mapper Editor when TrueType
font (TTF) output is active. (Wengier)
- Fixed the option "drive z expand path" not working
if Virtual Drive Z: has been moved to a different
drive letter (e.g. Drive Y:). (Wengier)
0.83.15
- Release notes for this version:
https://dosbox-x.com/release-0.83.15.html
- Enhanced the network redirector functions for the
Windows platform, so that you can for example list,
open, write, copy, and execute files in UNC network
paths in the form \\COMPUTER\FOLDER directly when
network redirector function is enabled and secure
mode is disabled on Windows systems. (Wengier)
- MOUNT command followed by a drive letter only will
show the current status of the drive, or show that
the drive is not mounted if so. You can make the
message shorter with the -q option, and filter out
non-local drives with "-o local" option. (Wengier)
- Added NE2000.COM (packet driver for NE2000 network
card) which will appear in Z:\SYSTEM directory when
NE2000 networking feature is enabled. (Wengier)
- Added /H option to TRUENAME command to return the
full filename on the host system for a specified
file/directory on a mounted local drive. (Wengier)
- Added option "starttranspath" which if set to true
will automatically translath all paths in command-
line to host system paths when starting programs to
run on the host system. You can also toggle this
function dynamically from the drop-down menu ("DOS"
=> "Host system applications" => "Translate paths
to host system paths". (Wengier)
- Added option "drive z expand path" which when set
to true (default) will automatically expand %PATH%
environment variable to include the subdirectories
on the Z drive when only the Z:\ path is specified
for compatibility purposes. (Wengier)
- Added option "turbo" in [cpu] section to enable
Turbo (Fast Forward) mode at start. You can also
change it from the command-line via CONFIG command
(e.g. "config -set turbo=true"). (Wengier)
- Added value "quiet" to "log console" config option
to only log DOS console outputs. (Wengier)
- Added menu command to spawn a new instance of
DOSBox-X to Mac OS X builds to work around the
singular app instance model the Finder tends to
prefer, so that users can run multiple instances
if they wish. (joncampbell123)
- MacOS builds will once again have Fluidsynth,
libslirp, and FFMPEG support from revised .app
building code. For best results support is enabled
at compile time only if Brew is installed along
with Brew builds of those packages. (joncampbell123)
- MacOS coreaudio MIDI support will continue with
the default soundfont rather than giving up
if it cannot select the custom soundfont specified
in the config file. (joncampbell123)
- Fixed MacOS bug where coremidi would attempt
MIDI output even if no MIDI destinations are
available, which is apparently the case on
Big Sur. (joncampbell123)
- The names of advanced config options will now be
listed in the common config reference file (i.e.
dosbox-x.reference.conf) too. Several previously
advanced options are now common options. (Wengier)
- Command "CONFIG -L" will now list the global config
file for DOSBox-X (if any). (Wengier)
- There is now a special DOS function for DOSBox-X at
Int21h/AH=2B/CX=0x4442h('DB')/DX=0x2D58h('-X'), as
follows: AL=0h (DOSBox-X installation check), AL=1h
(SDL version check), AL=2h (platform check), AL=3h
(machine type check), and AL=4h (DOSBox-X version
check). For example, you can get installed DOSBox-X
version by calling the function Int21h/AX=2B04h/CX=
0x4442h/DX=0x2D58h in your program - AL and AH will
become 0, and BX will return the DOSBox-X version
number after "0." (e.g. BH=83, BL=15). (Wengier)
- It is now possible to translate text for graphical
Configuration Tool and Mapper Editor interfaces.
The sizes and/or positions of some buttons in these
interfaces are adjusted accordingly too. (Wengier)
- Config option "usescancodes=auto" now implies false
for PC-98 mode in SDL1 builds. (Wengier)
- Config option "pc-98 force ibm keyboard layout" now
defaults to "auto", which implies "true" if a U.S.
keyboard layout is detected and implies "false"
otherwise. Also fixed some input keys for the PC-98
mode. (Wengier & maron2000)
- For PC-98 mode, if both FONT.ROM and FREECG98.BMP
are not found in the directory, then DOSBox-X will
now use internal Japanese font (also used by DOS/V
and JEGA systems) and the built-in 8x16 SBCS font
pre-generated from FREECG98.BMP. (Wengier)
- Added DBCS awareness support for special characters
"\" and "|" in Chinese/Japanese/Korean code pages
so that they will be treated properly as trailing
bytes of double-byte characters. (Wengier)
- Improved handling of clipboard copy/paste involving
DBCS characters with TrueType font (TTF) output in
standard mode. The clipboard copy/paste feature is
also supported in DOS/V and JEGA modes. (Wengier)
- The config option ttf.halfwidthkana (now in [ttf]
section) will enable low ASCII boxing characters
for the TrueType font (TTF) output too. This option
is now enabled by default for JP mode, and printing
these characters is also supported. (Wengier)
- Added support for showing Chinese/Japanese/Korean
characters in the SDL-drawn menu (in addition to
characters in different SBCS code pages) and the
Configuration Tool interface (so e.g. DOS command
help will show correctly for these languages). You
can change the DBCS font used by Configuration Tool
interface via fontxdbcs14 config option. (Wengier)
- Added support for inputting DBCS characters using
system input method (IME) in Windows SDL1 build.
Chinese (Simplified and Traditional) IMEs may work
with the default video setting and a Chinese code
page or Chinese DOS/V mode. Japanese & Korean IMEs
may require DirectX mode for the SDL1 library (set
option "videodriver" to "directx" in [sdl] section
for this). There is a new config option "ime" in
[dosbox] section to control it. When set to "auto"
(default), it is enabled for Windows SDL1 builds
only if DOSBox-X is started with a CJK code page or
in PC-98, JEGA or DOS/V mode. (Wengier)
- Added support for Japanese EGA mode (machine=jega)
by adopting code from DOSVAXJ3. As with DOS/V, you
can optionally set the SBCS and DBCS fonts with
fontxsbcs, fontxdbcs (and fontxsbcs19, fontxdbcs24,
etc) options in [dosv] section of config file, or
the default fonts will be used for them. (Wengier)
- Added support for DOS/V (Japanese mode) by adopting
code from DOSVAXJ3. Also added support for Chinese
and Korean DOS/V modes. Set option "dosv" to "jp",
"chs" (or "cn"), "cht" (or "tw"), or "ko" in [dosv]
section of the config file to enable DOS/V mode for
different CJK languages. There are now also various
font-related (and V-text screen mode) options added
in [dosv] section for the DOS/V support. For the
Simplified Chinese (code page 936), you can also
enable GBK extension of the standard GB2312 charset
with "gbk" option for Simplified Chinese DOS/V and
the TrueType font (TTF) output. (Wengier)
- Added support for codepage conversion of file names
in "drivez" folder (for customization of Virtual
Drive Z:) so that they will appear properly on this
drive according to the code page set. (Wengier)
- Improved support for DBCS (double-byte) characters
on mounted FAT drives with Chinese/Japanese/Korean
codepages (932/936/949/950). (Wengier)
- The "Unexpected control character" error message
which may appear when executing certain batch files
is now a debug message (belong to the "misc" type)
instead of showing to the DOS console output.
- Added "videodriver" config option in [sdl] section
to force a video driver (such as windib/windows,
x11, dummy) for the SDL library to use. The video
driver "directx" has been enabled for Windows SDL1
builds (without certain functions). (Wengier)
- There is a now a [ttf] section in the config file,
and TTF-related config options are moved/renamed
from [render] section to this section (previous
config options "ttf.*" in [render] section become
* (with "ttf." dropped) in [ttf] section). Windows
installer will also automatically transfer previous
TTF options to the new [ttf] section. (Wengier)
- When setting to "auto", config option "allow lmsw
to exit protected mode" will be active for Pentium+
CPUs instead of 486+ CPUs. (Wengier)
- Fixed a bug which may lead to crash when pasting
text via the DOS clipboard API (e.g. the 4DOS CLIP:
device) in non-Windows platforms. (Wengier)
- Fixed the possible freeze when output was switched
from TrueType font (TTF) output and you tried to
reset the virtual machine. (Wengier)
- Fixed non-representative filenames on local drives
in current code page causing memory corruption for
e.g. Windows 3.1 Setup on non-Windows platforms.
These entries will no longer appear to DOS guest
system in incompatible code pages. (Wengier)
0.83.14
- Release notes for this version:
https://dosbox-x.com/release-0.83.14.html
- Added support for directories on the Z drive, so
there is no need to put all files/programs on the
root directory of Z drive any more. Only one-level
directories are currently supported. There are now
six directories on the Z drive by default, namely
4DOS, BIN, DEBUG, DOS, SYSTEM, TEXTUTIL. Most files
that previously appeared on the root directory of
Z drive are now categorized into directories, with
addition of some files/programs, such as additional
4DOS files, text utilities in TEXTUTIL directory
and TITLE command to change window title. Default
value of the %PATH% environment variable has been
expanded to include these subdirectories, but if
you use a custom path then you may want to include
these directories in your %PATH%. (Wengier)
- You can now specify a command shell located on a
mounted local drive via SHELL= command in [config]
section of config file after the drive is properly
mounted via INSTALL= command. (Wengier)
- Extended START command to Linux and macOS systems.
It's disabled by default just like on Windows host
systems, but can be enabled by setting "startcmd"
to "true" or with the -hostrun command-line option
(replacing -winrun command-line option). (Wengier)
- CHCP command in the TrueType font (TTF) output now
allows code page 932, 936, 949, and 950 to display
Chinese, Japanese and Korean characters and file
names with DBCS support enabled in non-PC98 mode.
By default DOSBox-X will enable DBCS characters and
auto-detection for box-drawing characters in these
code pages, and these can be disabled by setting
new options "ttf.autodbcs" and "ttf.autoboxdraw" to
"false". There is also option "ttf.halfwidthkana"
to enable half-width Katakana in Japanese non-PC98
machines. KEYB command (and "keyboardlayout" config
option) also accept "jp", "ko", "cn", "tw", "hk",
"zh" as key layout names for code pages. (Wengier)
- Added support for printing Chinese/Japanese/Korean
DBCS (double-byte) characters when these code pages
are active, which by default ("auto") is enabled for
the TTF output, but can be enable or disabled for
all outputs by setting option "printdbcs" to "true"
or "false" in [printer] section. (Wengier)
- Added ability to toggle between Shift-JIS (or Kanji)
and graphical modes using Ctrl+F4 key (or ESC )3 and
ESC )0 escape sequences) in the PC-98 mode. There
is now also an indication of graphical mode in the
function row. (nmlgc)
- Added the "usesystemcursor" config option (in [sdl]
section) which when set to true will use host system
mouse cursor instead of drawing a DOS mouse cursor
when the mouse is not locked. (Wengier)
- When opening "Save..." or "Save Language File..."
dialogs in the Configuration Tool, the new dialogs
will now automatically be in focus. For the language
file, the name of the current language file will be
filled and modifiable. Pressing ENTER key saves the
config or language file, and pressing ESC key will
close these dialog boxes. (Wengier)
- Command "CONFIG -wl" will show the name of language
file being written to (if there is a language file
loaded then "CONFIG -wl" alone will write to it),
and command "CONFIG -ln" will show current language
name (if any), or you can use command "CONFIG -ln
<lang_name> -wl <lang_file>" to specify a language
name when writing to a language file. (Wengier)
- Added special properties to CONFIG command such as
"hostos", "programdir", "workdir", "configdir", and
"userconfigdir" so that commands like "CONFIG -GET
hostos" and "CONFIG -GET workdir" will get the host
system OS and DOSBox-X working directory. (Wengier)
- If a config option can only be changed at run-time,
"CONFIG -set" will now show such a message. You can
use "CONFIG -setf" to bypass, but the setting won't
take effect in the current session. (Wengier)
- SETCOLOR command can now change the text-mode color
schemes in outputs rather than the TrueType font
output too (VGA mode only). (Wengier)
- Added support for new TTF word processor type "FE"
for FastEdit, a new DOS text editor with functions
to view and change text styles. (Wengier)
- Added "ttf.wpfg" config option in [render] section
which can optionally specify a foreground color
(0-7) for the TTF output, similar to "ttf.wpbg" for
the background color in the TTF output. (Wengier)
- Added "ttf.printfont" config option in [render]
section which when set to true (default) will force
to use the current TrueType font (set via ttf.font)
for printing too when using TTF output. (Wengier)
- Added additional options to the "mouse_wheel_key"
config option to allow conversion of mouse wheel
movements into Ctrl+up/down arrow (option 4), Ctrl+
left/right arrows (option 5), Ctrl+PgUp/PgDn keys
(option 6), and Ctrl+W/Z as used by WordStar & EDIT
(option 7) . More menu options are added to "Mouse
wheel movements" menu group as well. (Wengier)
- Added menu option "Print text screen" (under "DOS")
to print current DOS text screen, if the printer
feature has been enabled. (Wengier)
- Added menu options "Display TTF blinking cursor",
"CJK: Switch DBCS/SBCS mode", "CJK: Auto-detect
box-drawing characters" and "CJK: Allow half-width
Japanese Katahana" under "Video" => "TTF options"
menu group to toggle the TTF options ttf.blinkc,
ttf.autodbcs, ttf.autoboxdraw and ttf.halfwidthkana
in [render] section of the config file. (Wengier)
- Support for UTF-8 encoded language files. Specify
a DOS code page with "country" option in [config]
section of the config file. Windows SDL1 menu and
macOS menu are now also compatible with Unicode
language files and characters. Also improved code
page compatibility for text in the SDL drawn menu
and the Configuration Tool. (Wengier)
- Cleaned up the welcome banner messages and other
messages involving boxdrawing characters for easier
translations into certain languages. (Wengier)
- Command-line option -silent now implies -nomenu,
SDL_AUDIODRIVER=dummy and will disable all sound-
related config option as well. (Wengier)
- Command-line option -fastlaunch will now suppress
messages by "automountall=true" option. Also added
value "quiet" to "automountall" config option to
auto-mount all Windows drives quietly. (Wengier)
- Added default value "auto" to "backend" option in
[ne2000] section of the configuration which will
automatically select slirp backend if available,
then pcap backend if available. (Wengier)
- Improved handling of Ctrl+C/Ctrl+Break for shell-
based DOS programs. (Wengier)
- Setting "irq" to "0" in [sblaster] section of the
config file will use the default IRQ number for the
sound card type. Also fixed "irq=-1", "dma=-1" and
"hdma=-1" not working as desired. (Wengier)
- Option "dpi aware=auto" now defaults to "true" when
full-screen mode is requested when DOSBox-X starts
in Windows SDL1 builds. (Wengier)
- The return value of AL in Int21/AX=0Eh is no longer
fixed. The game Jurassic Park may run after moving
Z drive to a different letter (e.g. E:). (Wengier)
- Added "Change current floppy image..." and "Change
current CD image..." menu options to change the
currently active floppy disk image(s) on drive A: &
B: and ISO/CUE image(s) on CD drives respectively.
This makes it possible to change the active floppy
disk and/or CD images while a guest system (e.g.
Windows 9x) is currently running. (Wengier)
- Added "Restart DOSBox-X with config file..." menu
option to start DOSBox-X with the specified config
file automatically from the menu. (Wengier)
- Added "Refresh rate..." menu option (under "Video")
to set the video refresh rate. (Wengier)
- Added "Enable A20 gate" menu option (under "DOS")
to enable or disable the A20 gate. (Wengier)
- Added "maximize" config option in [sdl] section to
automatically maximize the DOSBox-X window at start
(SDL2 and Windows SDL1 builds only). (Wengier)
- Added "allow lmsw to exit protected mode" config
option in [cpu] section to control whether the LMSW
instruction allows the guest to clear the PE bit
(leave protected mode).
- Added "debuggerrun" config option in [log] section
to set the run mode when DOSBox-X Debugger starts.
You can now also switch them from the menu ("Debug"
=> "Debugger option: ..."), including "debugger",
"normal" and "watch", the later two corresponding
to debugger commands "RUN" and "RUNWATCH". Also,
the built-in DEBUGBOX command without a parameter
will start the DOSBox-X debugger. (Wengier)
- Debugger interface now accepts the '0' key as a
command to single-step in case F11 isn't an option.
If you are using XFCE's Terminal emulator, this is
helpful because Terminal app takes F11 for itself.
- "Debug" menu is now a top-level menu for debugging
builds (for non-debugging builds there is "Logging
console" menu group under "Help"). Also added more
debug options including "Generate NMI interrupt"
and "Hook INT 2Fh calls" under this menu. (Wengier)
- Fixed /S and /F option (date/time-synchronization
ON/OFF) of DATE command not working. (Wengier)
- Fixed aspect=true not working properly for some
screen modes such as machine=ega. (Wengier)
- Fixed the mouse not automatically captured when
DOSBox-X starts with the settings fullscreen=true
and autolock=true. (Wengier)
- Fixed inputs in the Configuration Tool when the
Configuration Tool is scaled. (Wengier)
- Fixed keys may not work after loading a saved state
for the game Buck Rogers. (Wengier)
- Fixed Windows detection for the game "Tex Murphy:
Under a Killing Moon". (Wengier)
- Fixed serial ports 5-9 may not be usable with real
serial ports (directserial). (vkbaf & Wengier)
- Fixed issues related to screen dimensions in TTF
output in CGA/EGA modes since 0.83.12. (Wengier)
- Added alternative Windows installer for administrative
install mode on Windows Vista or later. (Wengier)
- Integrated SVN commits (Allofich)
- r4443: Improve detection of Paradise SVGA in some
installers with additional signature.
- r4453: Improve bittest instructions to wrap more
correctly.
- r4454: Enable A20 routines in BIOS.
- r4456: The numeric keypad can now be used to
navigate the debugger when Num Lock is off.
0.83.13
- Release notes for this version:
https://dosbox-x.com/release-0.83.13.html
- DOSBox-X can now resolve file paths in its config
options that include environment variables on non-
Windows platforms (e.g. ${HOME}..) as well. A new
config option "resolve config path" (in [dosbox]
section) is added to control path resolving in the
config file (e.g. to resolve tildes only by setting
to "tilde", or disable all path resolving). (Wengier)
- System menu text in Windows builds now match the text
in the drop-down menus to be translatable by language
files and is compatible with Unicode. (Wengier)
- The error "Access Denied" is returned instead of
"File not found" for files opened exclusively in
another program on mounted local drives. (Wengier)
- S386C928 hardware cursor fixed to divide X coordinate
by bytes per pixel indicated in the control register
to match apparent Windows 3.1/95 behavior. Cursor
now tracks host properly even in highcolor/truecolor
modes.
- Added support for the RetroWave OPL3 hardware player.
Set "oplemu=retrowave_opl3" in [sblaster] section of
the config file to use it. Config options including
"retrowave_bus", "retrowave_spi_cs", "retrowave_port"
are added to adjust its settings. (ClassicOldSong)
- Added support for S386C928 hardware cursor color
selection in 256-color mode, which is different
from later cards.
- S3 XGA "BYTE SWP" fixed only to byte swap if the
transfer is 16-bit wide. This fixes the dither
pattern drawn by Windows 95/98 when you select
"Shutdown" from the Start menu.
- IMGMAKE command is now disabled in the secure mode,
similar to commands like IMGMOUNT. (Wengier)
- Added config options "working directory option" and
"working directory default" in [dosbox] section of
the config file to provide various options for the
users to control DOSBox-X's working directory. For
example, DOSBox-X can use the primary config file
directory or the DOSBox-X program directory as its
working directory. You can view the DOSBox-X'safe
working directory with CONFIG -L command. DOSBox-X
is also able to save the working directory that a
user selects to global config files. (Wengier)
- DOSBox-X will now also try to read the config file
named dosbox-x.conf in the user config directory
when searching for config files at start.
- Added new command-line options -promptfolder and
-nopromptfolder which will cause the folder prompt
dialogs to show or not to show at startup.
- Mac OS X builds will prompt the user to select a
folder at startup if run from the Finder (or from
the root directory). The folder selected will then
become the current working directory of DOSBox-X.
This makes it possible to start DOSBox-X with a
config file of your choice and to control where
the capture, save states and other files go.
- Fixed Tseng ET4000 640x480 256-color SVGA mode
when using the ET4000.BIN VGA BIOS, or Windows 98.
- Added segment limit checks in Normal core for
MOVSB/MOVSW/MOVSD and STOSB/STOSW/STOSD, which is
needed for DOSBox-X to work with the Windows 3.1
S3 86C928 display drivers that use segment limit
exceptions to fake a linear framebuffer.
- Added S3 XGA "byte swap" emulation, needed for
correct menu/titlebar display in Windows 3.1 when
using the S3 86C928 driver.
- Added YUV (YUY2) overlay to S3 Trio64V+ card
emulation. Tested with XingMPEG under Windows 3.1
and ActiveMovie under Windows 98.
- Added machine types for 5 different variations of
S3 chipset: Vision864, Vision868, Trio32, Trio64,
and (experimental) Trio64V+, ViRGE, ViRGE/VX, and
S3 86C928.
- Removed second PCI BAR for S3 MMIO register space.
S3 datasheets do not show a second BAR. Windows 95
is perfectly happy without it.
- S3 SVGA XGA emulation BlitRect now supports
COLOR_CMP. DirectX-based Windows 95 games are now
able to blit in 256-color mode with a transparent
color key value.
- ANSI.SYS emulation now supports the "Device Status
Report" escape when asked through code 6 (report
cursor position)
- Fixed RAM mapping bugs related to MDA/CGA/Hercules
emulation and the "allow more than 640kb" option,
that failed to map RAM as expected, and because of
that, easily triggered a "corrupt MCB chain" error
message.
- Worked around the mounting issue for disk or CD
image files with LaunchBox, by allowing a mounting
command-line with single quotes like IMGMOUNT D
'X:\FILES\DOS.IMG' on Windows systems. (Wengier)
- Restored Pentium MMX emulation code for the dynamic
x86 core to that of version 0.83.11 for better
compatibility with some Windows 9x games. (Wengier)
- Added "compresssaveparts" config option (in the
[dosbox] section) which when set to false will not
compress the components in saved states. (Wengier)
- When the current reported DOS version is less than
7.x and the user tries to mount a LBA or FAT32 disk
image, DOSBox-X will now show a message to ask if
the user wants it to set the required DOS version
automatically and proceed. (Wengier)
- DOSBox-X will now show the folder mounted after
mounting to a drive from the menu. (Wengier)
- Fixed MOUNT and IMGMOUNT commands unable to mount
directories or image files that contain non-ASCII
characters in the code page on Windows. (Wengier)
- Fixed CapsLock may not work properly in Windows
SDL1 builds when -fs option is used. (Wengier)
- Fixed the cycle information on the title bar when
the Turbo mode is enabled. (Wengier)
- Fixed that some games using the DOS4GW Extender
may not work due to swap file issue. (Wengier)
- Fixed that the clipboard copy and paste may not
work when the current code page is 808 or 872
and you are using Windows. (Wengier)
- Fixed the handling of the "Save & Restart" button
in Configuration Tool when using Direct3D output
in Windows SDL2 builds. (Wengier)
- Fixed incorrect display issue when using TrueType
font (TTF) output with customized screen dimension
when fastbioslogo=true is set. (Wengier)
- Fixed CD audio not looping for individual tracks
in games like Alien Trilogy. (kcgen)
- The command "MIXER /LISTMIDI" now lists the ROM
directory/files and sound fonts for MT32, Synth
and FluidSynth MIDI device when active. (Wengier)
- Debugger "DOS XMS" command will only list handles
that are allocated, or with nonzero address or
nonzero size, to avoid showing irrelevant
information. (joncampbell123)
- Added LOADFIX -EMS option to allocate/free
EMS (expanded memory). (joncampbell123)
- LOADFIX -D -XMS will free all XMS blocks
allocated by LOADFIX -XMS. (joncampbell123)
- LOADFIX -A will not allocate memory unless there
is memory below 64KB to fill. (joncampbell123)
- INT 15h PS/2 mouse functions now clear pending
PS/2 mouse interrupt as part of the BIOS call.
This should resolve unresponsive mouse issues
with Windows 3.1. (joncampbell123)
- Add config option "mt32.model" in the [midi]
section to force a MT-32 model to use. (Wengier)
- Updated the MUNT MT-32 library to the latest
version 2.5.0. (Wengier)
- Updated FLAC decoder library to the latest version
(0.12.29 by David Reid). (Wengier)
- Integrated SVN commits (Allofich)
- r4436, r4437: Rewrite store integer instructions
to check if the result fits.(vogons 78127)
- r4447: Attribute Controller port alias on EGA
machine. Fixes EGA display of older Super Pac-Man
release.
0.83.12
- Release notes for this version:
https://dosbox-x.com/release-0.83.12.html
- Tandy graphics emulation fixed to accept 8 bits
for vertical total and vertical display CRTC
registers, which is needed for the tweaked
graphics mode used by Math Rabbit to display
correctly.
- INT 10h will no longer fill in three fields in
the BIOS data area (video CTL, char height, and
video switches) unless the machine type is
EGA or VGA. Those fields do not exist otherwise.
Certain games like Mindscape's "Road Runner" game
require those fields to be zero as part of its
Tandy detection routine.
- PCjr mode will omit the reserved graphics RAM
MCB block, and will subtract 16KB from the top
at the BIOS level, if emulating 128KB system
memory or less.
- You can now run PCjr mode with as little as
128KB of RAM. Removed 256KB minimum check from
DOS kernel. Certain games (Mickey's Space
Adventure) require memsizekb=128 and memsize=0
in PCjr mode or else it will not work correctly
due to how the game locates video system memory.
- Fixed Tandy mode to place video memory at the
top of conventional memory and allow running
Tandy mode with a memsizekb setting as low as
64KB, though 256KB or higher is recommended.
- Added Tandy "real memory size" field in the
BIOS data area.
- Tandy emulation updated to subtract 16KB from
top of conventional memory, which fixes some
games and follows DOSBox SVN behavior and real
hardware according to others on the Vogons forums.
- Fixed bug that limited Tandy mode to 624KB of
conventional memory. 32KB of video RAM is taken
from top of memory, losing half of the 32KB
breaks games that write to the system RAM instead
of B800:0000 segment and causes half the graphics
to not render.
- CD-ROM image emulation now supports ISO images
that are 2GB or larger, 32-bit integer size limit
has been lifted.
- Increased upper limit of "prebuffer" config option
(in [mixer] section) from 100 to 250. It is still
recommended to set a value less than 100. (Wengier)
- Added scrollbar buttons to the Configuration Tool,
so that the scrollbars better resemble the style of
the Windows 3.1 scrollbars.
- The help window for the Configuration Tool will now
display possible and default values for the config
options in addition to the descriptions. (Wengier)
- Updated the MMX patch code by kekko. (Wengier)
- MIXER command now supports the /GUI option to show
a popup window to display the mixer information.
Also improved its /LISTMIDI option which will show
the name of the current MIDI handler and you can
optionally specify a MIDI handler name (win32/alsa)
to show the information for this handler. (Wengier)
- Improved the compatibility of AUTOTYPE command with
games like Asterix & Obelix. (Wengier)
- The config options ttf.wpbg, ttf.bold, ttf.italic,
ttf.underline, ttf.strikeout, and ttf.char512 can
now be modified dynamically with CONFIG -SET ...
commands, e.g. CONFIG -SET ttf.wpbg=2. (Wengier)
- The minimal value for the ttf.ptsize config option
has been decreased from 10 to 9. (Wengier)
- Added menu item "Save logging as..." (under "Help"
-> "Debugging options") to save the current logging
content to the specified file. (Wengier)
- Added slirp backend support for the NE2000 network
feature (in addition to the existing pcap backend).
There are config sections named [ethernet, slirp]
and [ethernet, pcap] now to set the options for the
slirp and pcap backends respectively. Please refer
to the networking guide in the DOSBox-X Wiki for
more information about the backends. (Jookia)
- FAT driver can now support PC-98 HDI images with
partitions that start at any physical sector even
if the start is not a multiple of the ratio of
logical to physical sector size. This allows the
HDI image of Dragon Knight 4 to mount.
- Control character 7 (BEEP) is now allowed while
executing batch files without warnings. (Wengier)
- With the setting "core=auto" DOSBox-X now updates
the menu in the "CPU core" menu group automatically
between "Normal core" and "Dynamic core" to reflect
the CPU core which is currently in use. (Wengier)
- Fixed Windows 95/98 installation failures caused by
FAT driver and DOS API changes in previous version.
- Fixed well-intended but erroneous fall through case
in the INT15 handler that prevented 3rd party mouse
drivers from detecting the PS/2 mouse.
- Fixed the color issue with the Configuration Tool
in the macOS SDL1 build. (ant_222)
- Fixed switching ttf.cols, ttf.lins, and ttf.font
options dynamically in full-screen mode. (Wengier)
- Fixed menu options "Increase TTF font size" and
"Decrease TTF font size" (both under "Video" =>
"TTF options") not working (but keyboard shortcuts
and those in the system menu work). (Wengier)
- Fixed setting option "ttf.wp=xy3" or "ttf.wp=xy4"
not working (but "ttf.wp=xy" did work). (Wengier)
- Fixed preview function in WordStar not working for
TrueType font output in previous version. (Wengier)
- Fixed the issue that caused Windows 3.x group file
corruption on hard disk image files. (SnikoLoft)
- Integrated SVN commits (Allofich)
- r4416: Added ability to start and stop avi
recording, and to start keymapper, from config.
- r4405: Smarter clearing of the dynrec cache.
0.83.11
- Release notes for this version:
https://dosbox-x.com/release-0.83.11.html
- Added support for the clipboard device (CLIP$) and
DOS clipboard API on non-Windows systems (they were
previously only supported on the Windows platform).
In Linux SDL1 build only read access is supported
whereas both read and write access are supported in
all other builds. Also, selecting and copying text
to the host clipboard using a mouse button or arrow
key is now supported in macOS SDL1 build. (Wengier)
- Added "Paste Clipboard" button to the AUTOEXEC.BAT,
CONFIG.SYS and 4DOS.INI sections in Configuration
Tool for pasting clipboard contents. (Wengier)
- Windows SDL2 builds now use same clipboard pasting
method as Windows SDL1 builds by default instead of
the BIOS keyboard function. The method is now also
available for Linux and macOS (both SDL1 and SDL2)
builds (although it is disabled by default on these
platforms). A menu option "Use BIOS function for
keyboard pasting" is added to the "Shared clipboard
functions" menu group (under "Main") to use BIOS
function for the clipboard pasting instead of the
keystroke method. Make sure this option is disabled
if pasting clipboard text into Windows 3.x/9x apps
(e.g. Notepad & Write) is desired. This setting can
be changed with "clip_paste_bios" config option in
in [sdl] section of the config file too. (Wengier)
- With the config option "startcmd=true" or command-
line option -winrun, Windows applications can now
be launched from within a DOS program or from the
4DOS shell in addition to built-in shell. (Wengier)
- Added the "disable graphical splash" config option
in [dosbox] section which when set will cause a
text-mode BIOS splash screen to be always displayed
at startup instead of the graphical one. If the
TrueType font (TTF) output is enabled the text-
mode BIOS screen is used automatically. (Wengier)
- Added a simple BIOS Setup Utility, which will show
a summary of the current system configuration and
allow users to change the date and time. Press Del
key at the BIOS boot screen to enter. (Wengier)
- Added config option "showbasic" in [sdl] section
which when set to false will hide DOSBox-X version
number and running speed in the titlebar. (Wengier)
- Added experimental option to load a VGA BIOS ROM
image and execute it, instead of our own INT 10h
emulation. If enabled, it will load the specific
ROM file into C000:0000. If not specified, it
will choose based on machine type. VGA BIOS ROM
images (e.g. et4000.bin for Tseng ET4000 emulation)
can be dumped from real hardware or downloaded from
the PCem ROMs collection. It can be set with config
option "vga bios rom image" in [video] section.
- Improved handling for file- and record-locking
for non-Windows platforms. Portions of the code
are adopted from DOSEmu. (Wengier)
- Improved handling for the setting "ansi.sys=false",
such as fixing the welcome screen messup in this
case and allowing the use of a custom ANSI TSR
(such as NNANSI.COM) instead. (Wengier & stu)
- You can now press Ctrl+C or Ctrl+Break to break
from long outputs from commands like TYPE, MORE,
COPY, DIR /S, and ATTRIB /S. (Wengier)
- Renamed MEM.COM to MEM.EXE to match DOS. (Wengier)
- Rewrote built-in TREE command instead of the one
from FreeDOS to support long filenames. (Wengier)
- DELTREE is now an external command appearing on
drive Z: as DELTREE.EXE instead of a builtin shell
command, since it is an external command in a real
DOS system. (Wengier)
- Added REPLACE command to replace files, resembling
the MS-DOS counterpart. This command is compiled
with long filename support. (Wengier)
- Added PUSHD and POPD commands so that you can store
the current directory and changes to the specified
directory (optionally also the current drive), then
changes the directory/drive back. PUSHD command
without arguments show stored path(s). (Wengier)
- Added COLOR command to change current foreground
and background colors. It usage is similar to the
same-named command in the Windows command prompt.
For example, command "COLOR fc" produces light red
on bright white; COLOR without an argument restores
the original color. (Wengier)
- Added CHCP command to view the current code page,
or change the current code page for the TrueType
font (TTF) output. Supported code pages include:
437, 808, 850, 852, 853, 855, 857, 858, 860, 861,
862, 863, 864, 865, 866, 869, 872, and 874. You can
now also set the code page for TTF output via the
optional second parameter of the "country" option
in [config] section of the configuration. (Wengier)
- Added function to automatically save states in the
specified time interval (in seconds). You can also
specify a save slot or start and end save slots to
be used. For example, "autosave=10 11-20" will set
a 10-second time interval for auto-saving, and the
save slots used will be between 11 and 20. If no
save slot is specified, then the current save slot
will be used for auto-saving. Putting a minus sign
before time interval causes the auto-saving function
to not be activated at start. You can optionally
also specify up to 9 program names for this feature,
e.g. "autosave=10 11-20 EDIT:21-30 EDITOR:35" will
cause program "EDIT" to use save slots 21-30, and
"EDITOR" to use save slot 35, and other programs to
use save slots 11-20. Added a menu option "Auto-save
settings..." to manage the auto-saving feature at
run-time. A menu option "Enable auto-saving state"
is added to the "Save/load options" menu group under
"Capture" to toggle auto-saving when the function is
enabled. Likewise, a menu option "Select last auto-
saved slot" is added to the "Select save slot" menu
group (also under "Capture") to switch to the last
auto-saved slot (if any). (Wengier)
- The Configuration Tool windows are now scalable, so
that they will no longer look very small in e.g.
full-screen or High DPI modes. (ant_222)
- If the -defaultdir option is the only or the last
command-line option and no parameter is specified,
then directory of the primary config file (if any)
becomes the DOSBox-X default directory. (Wengier)
- You can now change the current output dynamically
with CONFIG command, e.g. "CONFIG -set output=ttf"
and "CONFIG -set output=default". (Wengier)
- The command "KEYB US" will return the DOS codepage
to 437 if current codepage is different. (Wengier)
- The setting "output=default" will enable the OpenGL
output for Linux systems if possible. (Wengier)
- Fixed the CGA/MCGA/MDA/Hercules-specific shortcut
function buttons in Mapper Editor, and the screen
colors after exiting from Mapper Editor when using
these machine types in Direct3D output (SDL1 build).
Also fixed the messages in the welcome banner for
these machine types to inform users the new default
shortcuts (Ctrl(+Shift)+[F7/F8]). (Wengier)
- Fixed DOS Int21/AH=0x5a "Create temporary file"
function not generating unique files. (Wengier)
- Fixed that the current drive goes back to Z drive
when combined unmounts & mounts are used. (Wengier)
- Fixed PC-98 keyboard handling of CTRL+A through
CTRL+Z. CTRL+C now works correctly in PC-98 mode.
- Fixed crash of Free Pascal compiler with dynamic
core and setting "use dynamic core with paging on =
auto" introduced in the previous version. (Wengier)
- Fixed launching Windows programs when the working
directory has no 8.3 filename entry. (Wengier)
- Fixed issues with full-screen switch in some cases
when the TrueType font output is enabled. (Wengier)
- Fixed an issue in MinGW builds that no data will be
sent to the OPL3Duo board. (DhrBaksteen)
- Fixed screen flickering when hovering over the menu
with Direct3D output in the Windows SDL2 build that
was introduced in the last version. (Wengier)
- Fixed mounting disk/CD images with long paths from
the "Drive" menu may not work properly. (Wengier)
- Fixed that the "Save" button in Configuration Tool
did not save config file in last version. (Wengier)
- Integrated SVN commits (Allofich)
- r4346: Fix a long-standing crash that occurred
when disconnecting a second joystick after
partially mapping it.
- r4344: Add F8 to toggle printable characters on
and off in the debugger.
- r4340: Fix behavior when main memory allocation
fails.
- r4336: Correct an oversight of r4186 when floppy
disks are mounted.
- r4330: some big endian improvements and drive_fat
fixes. (jmarsh)
- r4320: Report Q-Channel track number in BCD,
meaning it is not converted to binary by the
CD-ROM device driver. Fixes the CD-Player feature
of DOS Navigator 1.51 when playing past track 15.
- r4318: Add LOGC debug command to log cs:ip only.
0.83.10
- Release notes for this version:
https://dosbox-x.com/release-0.83.10.html
- The Windows key(s) in Windows and the Command key(s)
in macOS will now be displayed as the "Windows" and
"Command" keys instead of the "super" and the "meta"
keys in SDL1 builds just like SDL2 builds. (Wengier)
- Cursor blinking rate for TrueType font (TTF) output
can now be customized with the ttf.blinkc option.
Set an integer between 1 (fastest) and 7 (slowest)
to change TTF cursor blinking rate, or setting it to
0 for no cursor (or false for non-blinking cursor as
in previous versions), with the default value being
6 on PC-98 systems and 4 elsewhere. (Wengier)
- Fixed parallel port emulation to allow MDA port 3BCh
to work properly.
- Enhanced the printer function on Windows platforms
to allow printer names to be specified in [printer]
section via the "device" option for direct printing
to the selected device. If left empty, then Windows
Print dialog will always be shown, or specifying "-"
will cause it to show only once (unless the user
clicks "Cancel"). Under "Help" menu there is now a
menu option "List Printer Devices" to list printer
devices on Windows, and the parallel port LPT1 now
defaults to the printer on all platforms. (Wengier)
- The dynamic_x86 CPU core can now handle page faults
non-recursively, so you can now run the dynamic_x86
core with Windows 9x/ME without crashes, although
this may slightly decrease the performance, and it
may be disabled by setting the config option "use
dynamic core with paging on" in [cpu] section to
"false"; the default value of this option has been
changed to "auto" which will enable/disable itself
based on whether the 386 paging and a guest system
has been enabled. Also fixed incorrect behavior for
handling trap flags in the dynamic core and updated
the MMX code for improved performance. (koolkdev)
- Added support for Direct3D output on Windows SDL2
builds just like Windows SDL1 builds to become the
default output in all Windows builds. (Wengier)
- DOSBox-X now natively supports the pixel-perfect
scaling! Set the option "output=openglpp" in [sdl]
section of the config file to enable this output.
Alternatively, the output can be selected from the
menu ("Video" => "Output" => "OpenGL perfect") at
run-time. It is recommended to set config options
and "aspect=true" (whenever the emulated display
has an aspect ratio of 4:3) and "doublescan=false"
for openglpp output. Also, with high DPI displays
(e.g. on Windows 7+ with DPI scaling enabled) it
works better with full-screen mode and the setting
"dpi aware=true". It was implemented by ant_222
(patch author) with some code cleanups by Wengier.
- Updated the Windows installer to add a page for
new users to select a video system output to use -
the default output (Direct3D), OpenGL with pixel-
perfect scaling (openglpp or "OpenGL perfect") for
improved image quality, and the TrueType font (TTF)
output for text-mode DOS applications. (Wengier)
- You can now supply a ZIP/7Z file as a parameter to
DOSBox-X directly so that it will be mounted as C:
drive when DOSBox-X starts. (Wengier)
- Added overlay support for mounting PhysFS drives
so that you can specify a write location when you
mounted a ZIP/7Z archive by adopting an old patch.
For example, command "MOUNT C C:\DIR -T OVERLAY"
will specify path C:\DIR(\C_DRIVE) as the write
location after mounting C: drive as a PhysFS drive
with a command like "MOUNT FILES.ZIP". (Wengier)
- Added ability to resolve file paths that include
environment variables on Windows or tildes (~) on
other platforms for various options in the config
file, such as language and mapper file paths, MT32
ROM & FluidSynth soundfont paths, [config] section
options as well as file outputs for the printing
and serial/parallel port functions. (Wengier)
- Added calculator for DOS (EVAL.EXE), which appears
on Z drive and can calculate both simple (such as
sin(0) and cos(0)) and many advanced mathematical
expressions in either command-line mode and or the
interactive mode. (Wengier)
- Added support for standard (VGA/EGA/CGA) and mono
mode dual-screen setup by porting the patch. You
can now start DOSBox-X with the option -display2
followed by a color (white, green, amber) to enable
this feature on debug builds. (Wengier)
- You can now translate texts in DOSBox-X's drop-down
menus. The message files as written by the config
tool (CLI or GUI) will contain the menu texts for
translations from the English language. (Wengier)
- Added "file access tries" config option (in [dos]
section) so that if a positive integer is provided
(e.g. 1 or 3) DOSBox-X will try to read/write/lock
files on mounted local drives for the specified
number of times before failing on Windows builds.
It is especially useful for networked DOS database
applications that require record locking. (Wengier)
- Added "bannercolortheme" config option (in [dosbox]
section) so that users can change the background
color theme of the welcome banner from the default
blue color when DOSBox-X starts. (Wengier)
- Added "pcaptimeout" config option (in the [ne2000]
section) to specify a read timeout value for pcap
in milliseconds, or default value (-1 on Windows
or 3000 otherwise) will be used. (Wengier & Jookia)
- Added "Save & Restart" button to the Configuration
Tool's "Save" option for saving the config file and
then automatically restarting DOSBox-X with this
saved configuration. Command-line options -wcboot,
-wcdboot and -wcpboot are added to CONFIG command
which resemble -wc, -wcd, and -wcp options but will
reboot DOSBox-X after writing configfile. Command-
line option -bc (-bootconf) is also added to reboot
with specified config file (or the primary loaded
config file if not specified) directly. (Wengier)
- The config option ttf.font will now search for TTF
fonts in the directory as specified by the fontpath
option in [printer] section too. (Wengier)
- Added special properties to CONFIG command such as
"screenwidth", "screenheight", "windowwidth", and
"windowheight" so that commands like "CONFIG -GET
screenwidth" and "CONFIG -GET screenheight" will
get the current screen width and height. (Wengier)
- BOOT command without a parameter will now try to
boot the current drive if possible. (Wengier)
- You can now change properties such as "fullscreen",
"glshader" and "windowposition" dynamically with
CONFIG command. For example, command "config -set
fullscreen=true" and "config -set windowposition="
will now switch on the full-screen mode and center
the window position respectively. For TrueType font
output, you can now also change the TTF font, the
number of rows and columns on the TTF screen, and
the word processor for TTF dynamically using CONFIG
command, e.g. "config -set ttf.font=test", "config
-set ttf.lins=30", "config -set ttf.cols=100" and
"config -set ttf.wp=wp". The limits for the options
ttf.cols and ttf.lins are increased too. (Wengier)
- Implemented the DOS network redirector functions so
that the host name can be reported to DOS programs,
unless the secure mode is enabled. You may need to
set either the option ipx=true in [ipx] section or
the option ne2000=true in [ne2000] section. Also
added config option "network redirector" to [dos]
section which if set to false disables the network
redirector even with IPX/NE2000 enabled. (Wengier)
- Fixed an issue that the DOSBox-X window size may be
incorrect when restoring from a maximized window in
the SDL2 builds. (Wengier)
- Fixed that the menu option "Select OpenGL (GLSL)
shader.." not working properly sometimes. (Wengier)
- Fixed Ctrl+C not working in GNU ed. (Wengier)
- Fixed large ISO images (>2GB) unable to be mounted
using IMGMOUNT command. (Wengier)
- Fixed build failure on Gentoo Linux. (fonic)
- 3dfx games can now work with the Glide passthrough
feature when a guest system (guest DOS or Windows
9x) is currently running. The default setting for
config option "keep private area on boot" in [dos]
section is changed from "false" to "auto". (Wengier)
- Improved the speed of the Voodoo hardware emulation
for running games like Tomb Raider 3dfx. (Wengier)
- Improved OPL3Duo support, such as adding a buffer
thread to get rid of slowdowns & breakups in audio
playback when using the board. (DhrBaksteen)
- Updated the Tiny File Dialog library to the latest
version v3.8.5, which fixes issues such as the
compatibility problem with Windows XP. (Wengier)
- Updated FLAC, MP3, and WAV CD-DA decoder libraries
to the latest versions (0.12.28, 0.6.26 and 0.12.18
respectively; per David Reid). (Wengier)
- Integrated SVN commits (Allofich & Wengier)
- r4426: Emulate debug register 6 during trap flag
emulation (and normal int 1). Fixes 544 (jmarsh)
- r4401: Improve xchg to handle unwritable memory
better for core_dyn_x86.
- r4399: Finish up and add LOOP_NE and LOOP_E for
core_dyn_x86.
- r4393: Remove video page check when drawing
internal mouse pointer, as the BIOS current page
is not updated in some cases. Fixes QQP games: Lost
Admiral, Conquered Kingdoms, and Solitaire's
Journey. Also be a bit smarter about enabling
autolock, supporting more cases where the mouse
is used for input without resetting it.
- r4392: Improve capturing of Zeliard and fix a
few percussion-related capturing problems as well.
- r4310: Improve PMAKE on big endian machines and
fix some bugs. Fixes bug in 16 -> 15 bit color
conversion.
- r4309: Copy working directory when mounting an
overlay.
- r4307: Refinement of SoundBlaster checks, so no
IRQ is raised when not in autodma mode.
0.83.9
- Release notes for this version:
https://dosbox-x.com/release-0.83.9.html
- Physical CD drives are now mountable in SDL2 builds
just like SDL1 builds, so commands like "MOUNT -CD"
should work in both SDL1 and SDL2 builds. Some code
is adopted from the SDL2_CDROM library. (Wengier)
- Implemented file locking support for mounting disk
image files so that you cannot mount the same disk
image files in read/write mode at the same time as
this can cause possible disk corruptions. A config
option "locking disk image mount" is added to the
[dosbox] section which when set to false (or if the
user mounts the image files read-only) will bypass
the locking of image files. Also improved the DOS
file locking function, which can be disabled by
setting "share=false" in [dos] section. (Wengier)
- Implemented PhysFS support so that you can mount
archives (e.g. ZIP/7Z) as drives in read-only mode,
e.g. "MOUNT C TEST.ZIP" or "MOUNT D FILES.7Z". Some
code is ported from a custom DOSBox fork. The menu
option "Mount an archive file (ZIP/7Z)" is added to
Drive menu to mount archives as Drives. (Wengier)
- INT 13h now obeys the "hard drive data rate limit"
setting, using the same disk I/O delay code as
INT 21h file I/O. [Issue #2039]
- Linux/X11 SDL1 builds: Combine window move/resize
into one call if possible, and not during window
manager hints, to avoid resize problems with the
XFCE 4.14 platform.
- Added menu option "Create blank disk images..."
(under "DOS" menu) to create blank floppy or hard
disk images of a common disk size, including 360KB,
400KB, 720KB, 1.2MB, 1.44MB and 2.88MB for floppy
disk images and 250MB, 520MB, 1GB, 2GB, 4GB and 8GB
for hard disk images. The 1GB option (-t hd_1gig)
is also added to IMGMAKE command. (Wengier)
- The Configuration Tool will now be centered within
the DOSBox-X window for a better looking. (Wengier)
- Added config option "synchronize time" in [dosbox]
section which when set to true will allow DOSBox-X
to automatically synchronize the date and time with
the host system, unless you manually change date
and/or time. A menu option "Synchronize host date/
time" is added to the DOS menu. The function uses
IRQ0 handler; it will not work in PC-98 mode nor if
the timer isn't running at the standard 18.2Hz tick
rate, as any other rate does not make sense and
will cause only jitter and error. Also fixed two
Demoscene entries sl_fokus and sl_haloo which use
BIOS_TIMER with a faster hardware tick rate.
- Added config option "showdetails" which when set to
true enables the menu option "Show FPS and RT speed
in title bar" at start. It is equivalent to -showrt
and -showcycles command-line options. (Wengier)
- Improved compatibility with Watcom C++ 2.0 when
long filename (LFN) support is enabled. (Wengier)
- Added support for starting DOSBox-X in a specific
display on a multi-screen setup (Windows builds as
well as Linux/macOS SDL2 builds). A config option
"display" is added to the [sdl] section that users
can specify a display for the DOSBox-X window to
start. The option can be combined with the existing
"windowposition" config option to specify the
position on the specified display/screen. (Wengier)
- DOSBox-X will now pop up a message box to inform
the user when a Direct3D pixel shader is loaded
from the menu on the Windows platform. (Wengier)
- Extended serial (COM) ports from COM1-COM3 to COM1-
COM9 in the [serial] section. The config options
serial4-9 are advanced options. You can optionally
specify base addresses for any serial ports. When
the "file" option is used, you can additionally
specify a program to open the file with "openwith"
option. If the specified program cannot be executed
due to some problem, DOSBox-X will try to start a
program as specified with the "openerror" action,
or it will show an error. For both serial (COM) and
parallel (LPT) ports options, the program commands
can be quoted with double quotes, or with single
quotes if the "squote" option is added. (Wengier)
- Extended parallel (LPT) ports from LPT1-LPT3 to
LPT1-LPT9 in the [parallel] section. Config options
lpt4-9 are advanced config options. You can also
optionally specify base addresses and IRQs for
these ports. The parallel1-9 config options are
enhanced to allow the generated files to be started
with the specified action: "openpcl" to start a
program to open the file if the print output is
detected to be PCL; "openps" to start a program if
the print output is detected to be PostScript (PS);
"openwith" to start a program otherwise. If you'd
like to specify parameters then be sure to properly
quote the string(s). Furthermore, if any of the
specified program(s) cannot be executed, DOSBox-X
will try to start a program as specified with the
"openerror" action, or show an error. (Wengier)
- Added "openwith" and "openerror" config options to
[printer] section to start the specified program to
open the printer output file. The [printer] section
also accepts "fontdir" option where you can change
the path ("FONTS" by default) where the printer TTF
fonts (including courier.ttf, ocra.ttf, roman.ttf,
sansserif.ttf, script.ttf) are located. If no TTF
font can be found (either from the custom path or
system path) for printing, the internal TTF font
for the TTF output will be used. (Wengier)
- Added read-only options to the Drive menu to mount
host folders/drives or image files to the specified
drive letter in read-only mode. (Wengier)
- You can now use a single mapper file for both SDL1
and SDL2 versions of DOSBox-X! The new mapper file
will be divided to sections [SDL1] and [SDL2] for
both versions. The mapper file can be specified
with the mapperfile config option, or you can set
the mapperfile_sdl1 and mapperfile_sdl2 config
options to override mapperfile option. (Wengier)
- Added -defaultmapper command-line option which will
use default key bindings for the mapper. (Wengier)
- The menu functions "Load mapper file", "Quick edit
mode", "Stop clipboard pasting" and "Display state
information" have been added to the key mapper so
that you can now define your own shortcut keys to
activate these functions. (Wengier)
- The default shortcuts for the "Copy to clipboard",
"Paste from clipboard", and the "Reset window size"
functions are now Ctrl+F5, Ctrl+F6 and Host(F11/F12)
+BackSpace respectively. (Wengier)
- Added ttf.fontbold, ttf.fontital, and ttf.fontboit
config options so that you can specify actual bold
italic, and bold-italic TrueType fonts for use with
the TTF output that will render the bold, italic,
and bold-italic text styles using the actual TTF
fonts (e.g. consolab, consolai, consolaz instead of
consola) instead of making the original TTF font
bold, italic, bold-italic automatically. (Wengier)
- DOSBox-X now supports the use of arrow keys (left,
right, up, down, home, end) to select and copy text
to the host clipboard in addition to a mouse button
(subject to the specified key modifier, or use the
QuickEdit function). The arrow keys will move the
selections; press Home key to start the actual text
selection and End key to end text selection and to
copy to the clipboard; press ESC key to cancel text
selection. Set config option "clip_mouse_button" to
"arrows" to enable it, or select it from "Shared
clipboard functions" menu group. (Wengier)
- You can now press the key combination Ctrl+Tab in
the shell to see a list of files/directories that
can be completed by the Tab completion. (Wengier)
- Added SETCOLOR command to view or change the text-
mode color scheme settings. Also fixed the color
palette for the TTF output. (Wengier)
- Separated "TTF options" menu group that contains
TrueType font (TTF) related menu options from the
"Text-mode" menu group in "Video" menu. (Wengier)
- The "Show menu bar" option now appears in system
menu of the Windows SDL2 build too. (Wengier)
- If a language file fails to load, DOSBox-X will now
show a warning dialog instead of exiting. (Wengier)
- The option "clip_key_modifier" now accepts values
like "ctrlalt", "ctrlshift", "altshift". (Wengier)
- Fixed 2D texture not showing for 3dfx games in the
Glide passthrough mode. (Wengier)
- Fixed the mouse sensitivity menu option (under the
"DOS" menu) not working. (Wengier)
- Fixed the color palette problem when switching to
graphic mode from mono mode. (Wengier)
- Fixed full-screen TTF output may not fully cover
the background screen in Linux. (Wengier)
- Fixed that lines starting with "%" in [autoexec]
section are being ignored. (Wengier)
- Fixed issues with building the code with original
MinGW using the ./build-mingw script. (Wengier)
- Fixed option "output=ttf" not working properly with
-startui/startmapper command-line option. (Wengier)
- When the mouse is captured, the title bar will show
the shortcut to release the mouse. (Wengier)
- IMGMOUNT now assumes the ISO type for .GOG/.INS
files (which are equivalent to .CUE/.INS files)
if no type is specified by the user. (Wengier)
- Improved the dynamic core including the way its
cache is allocated and to support dual mapping.
- The FREECG98.BMP file (for PC-98 mode) is now
rendered based on a unifont_jp TTF font instead
of UnifontFullMediumMono.ttf. (roytam1)
- Added support for automatic switching from TTF
output to another output in PC-98 mode, allowing
Windows 3.1 to run in this mode. (Wengier)
- Added OPL3Duo support, which passes OPL3 output
to an OPL3Duo Arduino board with a specific
configuration if desired. Set the config option
"oplemu=opl3duoboard" to use it. (josephillips85)
0.83.8
- Release notes for this version:
https://dosbox-x.com/release-0.83.8.html
- Added support for scalable TrueType font (TTF)
output for text-mode programs. Set "output=ttf"
and optionally a monospaced TTF font (such as
consola) with config option "ttf.font" to use it.
Lines and columns can be specified with config
options "ttf.lins" and "ttf.cols", and the cursor
can be made blinking with the option "ttf.blinkc".
The config options "ttf.ptsize" and "ttf.winperc"
can be used to set the TTF font size and window
percentage respectively. If you specify a TTF font
size with "ttf.ptsize" then "ttf.winperc" will be
ignored. You can also specify a word processor
(WP=WordPerfect, WS=WordStar, XY=XyWrite) for the
on-screen text-style and 512-character font (WP)
features. When using the TTF output DOSBox-X will
temporarily switch to a different output when a
graphical mode is requested (or when trying to take
a screenshot); the TTF output will be auto-switched
back later), which can be customized via config
option "ttf.outputswitch" (which defaults to auto).
Menu items in the "Text-mode" menu group (under
"Video" menu) have been expanded to support TTF
options such as increasing/decreasing the TTF font
sizes and on-screen text style toggling (including
bold, italics, underline and strikeout). You can
also select a TTF font to use at run-time with the
"Select TrueType font (TTF)" menu option. (Wengier)
- Added the "Load mapper file..." menu option (under
"Main") to select and load a DOSBox-X mapper file
at run-time. Be sure to select a SDL1 mapper file
for SDL1 builds, and similar for SDL2. (Wengier)
- You can now select a host key from the menu (under
"Main") including Ctrl+Alt, Ctrl+Shift, Alt+Shift,
or use the mapper-defined host key as in previous
versions (which default to F11 on Windows and F12
otherwise). A config option "hostkey" is added so
that you can specify it from config file. (Wengier)
- Pasting text from the clipboard on macOS SDL1 build
is now supported like Linux SDL1 build. (Wengier)
- Added support for ARM-based Apple M1 MacBook. The
dynamic core now works on ARM-based macOS systems.
SDL1 builds updated to use newer audio APIs on the
macOS platform so that the audio works once again
when compiled and run on macOS 11 (Big Sur). Prior
to the change, ancient versions of the API dating
back to the mid 2000s were used which no longer
work on Big Sur.
- DOSBox-X will now look for the config file (i.e.
dosbox-x.conf/dosbox.conf) and the mapper file in
the directory containing the DOSBox-X executable
too if the config or mapper file cannot be found
in the DOSBox-X working directory. (Wengier)
- The system menu in Windows SDL1 builds is now also
available for Windows SDL2 builds, and menu items
"Reset font size", "Increase TTF font size" and
"Decrease TTF font size" are added. (Wengier)
- Enhanced the mapper editor interface to allow more
keyboard shortcuts to be added, shown in multiple
pages in the mapper, navigable with the "Previous
Page" and "Next Page" buttons. The text in the
grids are now longer and clearer too. The default
shortcuts for a few items are changed to use the
Host key style (e.g. Host+S and Host+L for saving
and loading states respectively). (Wengier)
- Added menu item "List network interfaces" under
"Help" menu to list network interfaces in the host
system for the NE2000 feature. (Wengier)
- Added menu group "DOS commands" under "Help" menu
to display the help content for the selected DOS
shell command (DIR, CD, etc). (Wengier)
- Configuration Tool now provides the option to save
to the primary or user config files. (Wengier)
- Certain config options (e.g. doublescan) that were
marked as advanced options are now general config
options and will appear in dosbox-x.reference.conf
apart from dosbox-x.reference.full.conf. (Wengier)
- Added config options "saveremark" (default: true)
and "forceloadstate" (default: false) in [dosbox]
section which can be used to control if DOSBox-X
should ask users to enter remarks when saving a
state or show warnings when loading a saved state
if there is a mismatch found. (Wengier)
- The config option "pixelshader" is moved from the
section [gui] to [render] so that it will be in the
same section as the option "glshader". (Wengier)
- Added menu item "Select OpenGL (GLSL) shader..." to
allow OpenGL shader switch from the menu, just like
the function for Direct3D pixel shaders. (Wengier)
- Added menu item "Show IDE disk or CD status" under
"DOS" menu to show the current assignments (disk or
CD image) of the IDE controllers. (Wengier)
- Fixed IDE CD assignment may not be reset when soft
reboots are activated from guest systems. (Wengier)
- The program 80x43.COM is added into the ZIP package
TEXTUTIL.ZIP on the Z drive. You can also change
current text screen to the 80x43 mode from the menu
group "Text-mode" under "Video" menu. (Wengier)
- Enhanced MODE command so that you can change the
number of columns and lines in the screen with the
syntax "MODE CON COLS=c LINES=n" (c=80 or 132, and
n=25, 43, 50, or 60). The command "MODE CON" will
show the current number of columns and lines in the
screen as in a real DOS system. (Wengier)
- Added FLAGSAVE command for the save state feature
to flag (mark) one or more files to be saved and
loaded. Type "FLAGSAVE /?" for more information on
this command. (PogoMan361 and Wengier)
- Enhanced A20GATE command to show the current status
of the A20 gate when no parameter is given, along
with other small improvements. (Wengier)
- INT 21h DOS=HMA emulation, to enable the A20 gate,
and autoa20fix, to disable the A20 gate, now checks
whether the CPU is running in virtual 8086 mode.
If vm86 detected, the code will control the A20
gate by calling the XMS interface instead of direct
reading/writing via port 92h. This consideration
is required for autoa20fix to cooperate with
Microsoft Windows 3.1. Note that Windows 3.1 does
not virtualize port 92h. If it did, this workaround
would not be necessary.
- Added -a option to LOADFIX command which will auto
allocate enough memory to fill lowest 64KB memory
instead of using exactly 64KB memory. (Wengier)
- Added autofixwarning option (true by default) which
allows user to silence the messages when DOSBox-X
tries to auto-fix "Packed file is corrupt" error
when running a program with this issue. (Wengier)
- Added autoa20fix option (enabled by default). This
option when enabled attempts to resolve EXEPACK
"Packed file is corrupt" errors by temporarily
disabling the A20 gate and running the program
again. This may provide better support for affected
DOS applications than the LOADFIX option. If both
autoa20fix and autoloadfix are set, then autoa20fix
will be tried first, and if it did not work then
autoloadfix will be tried next.
- The autoloadfix config option changed to allocate
only enough memory to keep the executable above the
64KB boundary, instead of blindly allocating 64KB.
- Fixed menu items "Rescan drive" and "Swap disk" in
"Drive" menu being reversed. (Wengier)
- Fixed CD audio issue with the game "The Secret of
Monkey Island" when talking to the pirate in Scumm
Bar by adapting the patch that fixes it. Thanks
kcgen for the fix logic. (Wengier)
- Added support for MAME CHD CD images. You can now
mount CHD images with IMGMOUNT command, or from the
Drive menu. Based on libchdr library and the work
of the user whocares010. (Wengier)
- Updated FLAC/MP3/WAV CD-DA decoder libraries to the
latest versions (versions 0.12.22, 0.6.19, 0.12.14
respectively). Thanks to mackron & kcgen. (Wengier)
0.83.7
- Release notes for this version:
https://dosbox-x.com/release-0.83.7.html
- The primary DOSBox-X Wiki is now located at the
URL: https://dosbox-x.com/wiki (Wengier)
- Implemented the x86 dynamic core for both 32-bit
and 64-bit systems by re-porting the code from SVN.
Dynamic core now supports either the dynamic_x86
or the dynamic_rec core. The dynamic_x86 core will
be used by default for x86 and x86_64 platforms and
if "core=dynamic" is set, and Windows 9x can be run
in this dynamic core (although at this time may
encounter some issue with the S3 driver). You can
also explicit specify setting "core=dynamic_x86" or
"core=dynamic_rec" for either the dynamic_x86 core
or the dynamic_rec core. Also thank joncampbell123
for the 64-bit fix. (Wengier)
- You can now use your own save file (in addition to
save slots! There are now a "Use save file" toggle
item and "Browse save file..." for browsing save
files on your computer. A config option "savefile"
(in [dosbox] section) is added to specify a save
file to use at start. (Wengier)
- Save state feature now allows users to optionally
enter remarks when saving a state. A submenu group
"Save/load option" is added (under "Capture") where
you can toggle menu items "No remark when saving
state" (for disabling input of remarks when saving)
and "force load state mode". A menu item "Display
state information" is added as well to display the
information of the saved state. (Wengier)
- DOSBox-X will now use native dialog box to display
quit warnings and save state errors. (Wengier)
- Changed some DOS error messages (such as "Illegal
command" which now reads "Bad command or filename")
similar to real DOS systems. (Wengier)
- ADDKEY and INT2FDBG commands now appear as programs
on Z: drive instead of shell commands. (Wengier)
- Improved the -z (move virtual drive Z:) function of
MOUNT command. You can move the virtual drive as
many times as you want, and save/load states will
work even after you move the Z: drive. (Wengier)
- Enhanced the config option "freesizecap" to allow
the setting "fixed" which is the same as "false",
and a new setting "relative" is added, which will
be similar to the setting "fixed" but the reported
free disk size will also change relative to the
change of the free disk size ever since. (Wengier)
- Added support for Opus CD-DA tracks by porting and
cleaning up the source code from other projects.
Many thanks to Marty Shepard and kcgen. (Wengier)
- Support for FluidSynth MIDI Synthesizer is now
included in the MinGW builds by default just like
Visual Studio builds. Set "mididevice=fluidsynth"
and a soundfont file to use it. (Wengier)
- Enabled xBRZ scaler for Visual Studio SDL2 builds
just like Visual Studio SDL1 builds. (Wengier)
- Added menu item "Show Sound Blaster configuration"
under "Sound" menu to show the current information
about Sound Blaster, and also menu item "Show MIDI
device configuration" (also under "Sound" menu)
to show information about the current MIDI device
such as the soundfont file in use. (Wengier)
- Added "Mount multiple disk/CD images" option to the
mounting options of the Drive menu to allow users
to mount more than one disk/CD images to a drive,
swappable from the menu. Also added separators to
the Drive submenu to make it look better. (Wengier)
- Added new CPU types to the "Emulate CPU speed" menu
group namely 286-25MHz, 386DX-25MHz, 486DX4-100MHz,
486DX5-133MHz, Pentium-60MHz, Pentium-75MHz, and
Pentium-90MHz. Thanks again for the data provided
by the user maximus105. (Wengier)
- You can now select a special key (e.g. Alt+Tab,
Ctrl+Break, Ctrl+Alt+Del, etc) to be sent from the
key defined in the mapper editor. The key can be
selected (Ctrl+Alt+Del by default) from the "Send
special key" menu group in "Main" menu. (Wengier)
- Added full Ctrl+Break emulation at the BIOS and
DOS level, updated console emulation to match.
The "Pause" mapper shortcut is now moved to
HOST[F11/F12]+Pause instead of Ctrl+Pause so that
Ctrl+Break can work properly for users, and the
function to send the Ctrl+Break key from the menu
("Send special key" under "Main") is added. Also,
the PC-98 STOP key now functions the same as the
Ctrl+C and Ctrl+Break keys in IBM PC mode.
- Added functions "CopyToClipboard" and "QuickRun" to
the mapper editor so that you can use shortcuts to
activate them (default shortcuts: HOST(F11/F12)+A
and HOST(F11/F12)+Q respectively), and a default
shortcut HOST(F11/F12)+V is added to the clipboard
paste function. Meanwhile, FullCore and SimpleCore
shortcuts are removed from the mapper. (Wengier)
- Added two new menu items in the "Shared clipboard
functions" menu group under "Main", including "Copy
all text on the DOS screen" which will copy all
screen text to the clipboard, and "Stop clipboard
pasting" which allows user to stop pasting in the
middle of pasting long clipboard content. (Wengier)
- The mouse copy/paste feature is now available for
non-Windows systems on SDL2 builds. Also, pasting
from the clipboard with a mapped shortcut is also
available for Linux/X11 on SDL1 builds. (Wengier)
- Added "Use US keyboard layout" toggle menu item in
the "PC-98" menu group under "Video" to select
whether to force the default US keyboard layout in
PC-98 mode, same as the "pc-98 force ibm keyboard
layout" config option in [pc98] section. Also moved
the "PC-98 PIT master clock" options from the "DOS"
menu to this menu group. (Wengier)
- The full dosbox-x.reference.conf file is renamed to
dosbox-x.reference.full.conf. The original file
dosbox-x.reference.conf now contains common config
options instead of all config options. (Wengier)
- The CONFIG command and Configuration Tool will now
save common and modified config options by default.
The -all command-line option (or "Save all options
to the configuration file" checkbox) will force to
save all config options. A new -mod command-line
option is added to CONFIG command to save modified
config options only, and a new -norem command-line
option is added to not write remarks. (Wengier)
- Updated the Windows installer to default to the
"typical" installation. For the full installation
start menu items will be added for DOSBox-X builds
copied to subdirectories. A new checkbox "Write
common config options (instead of all) to the
configuration file" is added which when checked
will only write common and modified advanced config
options to the config file. Furthermore, for both
"typical" and "full" installations the Windows
installer will now also copies the DLL files
inpout32.dll (32-bit) and inpoutx64.dll (64-bit) to
the DOSBox-X install directory for use with the
direct parallel port passthrough feature. (Wengier)
- Improved Flatpak support for Linux. (rderooy)
- Improved message for the -help command-line option,
adding for example -silent and -socket command-line
options in the help messages. (Wengier)
- Added -silent command-line option to run DOSBox-X
silently (without showing the DOSBox-X window) and
then exit after executing AUTOEXEC.BAT. (Wengier)
- Fixed command-line option -socket not working for
the null-modem feature. (Wengier)
- Fixed issue that aspect ratio not being respected
in full-screen mode when a GLSL shader is enabled
with an OpenGL output. (Wengier)
- Fixed toggle in the "Frameskip" menu group did not
change when selecting a different option. (Wengier)
- Fixed shelling from programs may not work when the
shell config option is set. (Wengier)
- The default country setting ("country" option in
[config] section]) now defaults to auto-detection
if possible, or 81 (Japan) in PC-98 mode. (Wengier)
- Increased the default maximum DOS files (adjustable
from [config] section) from 127 to 200. (Wengier)
- Improved resetting with LOADLIN program. (Wengier)
- Improved Gravis Ultrasound (GUS) implementation to
make it more accurately represent the GUS DMA state
as expected by the running DOS software.
- The archive attribute will no longer automatically
be applied to directories on non-Windows systems.
This fixed issue with PLAYMIDI.EXE from Gravis
Ultrasound when listing directories. (Wengier)
- Applied hack to allow the low DMA channel detection
in the SB16 DIAGNOSE program to work. (Wengier)
- The default setting of the clip_paste_speed option
has been changed from 20 to 30, which will help
prevent lost keystrokes when pasting from the host
clipboard for some programs. (Wengier)
- With Pentium CPU setting (cputype=pentium) DOSBox-X
no longer reports FDIV bug by default. An advanced
config option "report fdiv bug" is added to report
such CPU bug when set to true. (rderooy & Wengier)
- Added support for the XDG_DATA_HOME environment
variable for config directory in Linux. (rderooy)
- Added support for compiling with pcap for Windows
MinGW builds. (Jookia)
- Added config option "windowposition" (in [sdl]
section) to set the window position at startup in
the positionX,positionY format. (tomba4)
- Added config option "raw_mouse_input" (in [sdl]
section; SDL2 builds only) to bypass the operating
system's mouse acceleration & sensitivity settings.
Implemented by NicknineTheEagle.
- Added config option "startquiet" (in [dos] section)
which when set to true will silence the information
messages before launching Windows programs to run
on the Windows host. A toggle menu item "Quiet mode
(no start messages)" is added to the "Windows host
applications" menu group in "DOS" menu. (Wengier)
- The menu "Show details" (under "Main") is renamed
to "Show FPS and RT speed in title bar". (Wengier)
- Add menu group "Text-mode" under "Video" menu to
change some text-mode related video settings, such
as changing the number of rows and columns. A zip
package named TEXTUTIL.ZIP is added to the Z drive
that contains various utilities (such as CGA.COM,
EGA.COM, 132X25.COM, 132X43.COM) to change current
video setting from the command line. Also added a
config option "high intensity blinking" which when
set will display high intensity background colors
instead of blinking foreground text. The menu item
"Allow 9-pixel wide fonts" is moved from the menu
group "Compatibility" to here. (Wengier)
- Added "Debugging" menu group under "Help" menu, and
moved items from the "Video" Debug and "DOS" Debug
menus and the debugger here (debug builds only).
Also allowed to hide/show the console or debugger
window in Windows debug builds. With the menu item
"Console wait on error" checked the Windows console
window will wait for the ENTER key before closing
itself after an E_EXIT occurs. (Wengier)
- Updated MPXPLAY to latest version 1.65. (Wengier)
- Integrated SVN commits (Allofich)
- r4386: Correct MPU-401 clock-to-host function to
operate independently of playing. Fixes hang at
exit when playing Roland music in demos by The
Phoney Coders. Clamp tempo to valid range.
- r4384: ICW1 on the PIC clears the Interrupt Mask
Register. Fixes Antagony and quite a few demos that
expect IRQs to be unmasked.
- r4382: Refine adlib timers a bit more and make
reading the Adlib take a bit more time.
- r4378: Prevent some possible deadlocks with sti
in dynrec core.
- r4375: Improve compatibility with older Intel
chipsets
- r4374: Add a bit of hack so cycles=max/auto 90%
keeps on working inside batch files after r3925.
- r4371: Fix regression in Clue: Master Detective.
- r4370: As an adjunct to r4369, make the reference
counts of standard device handles equivalent to
those of real DOS.
- r4369: Compatible side-effect behavior of DOS in
the file close function.
- r4368: Improve error codes for some DOS file functions.
- r4367: Change FPU_FBST to only write 18 decimals
instead of the wrongly 19, this makes it possible
to switch 64 integers which in turn fixes some
rounding issues. (jmarsh)
- r4282,r4283: Switch to a different way to calculate
DBOPL table offsets.
- r4280: Prevent GenerateDMASound from running with
input of 0.
- r4279: Remove DMA_TRANSFEREND and replace with
DMA_MASKED.
- r4277: Remove cases not needed after r4276
- r4276: Remove defunct code related to the initial
display mode of the system BIOS during video mode
changes.
- r4274: fix externals.
- r4273: Make frameskip an integer.
- r4269: Use fabsf when return value is a float.
Small warning fix.
- r4265: Some more cleanups and memleak fixes.
- r4264: Pick some lowhanging fruit. (some memory
leaks and unused variables)
- r4262: missed one
- r4261: These actually use float as input.
- r4258: Rename bios tester to biostest and make it
debug only to avoid people trying to load real
bioses.
- r4257: Add simple program that allows you to boot
into a bios image for running cpu tester bios.
0.83.6
- Release notes for this version:
https://dosbox-x.com/release-0.83.6.html
- Improved internal Voodoo card hardware emulation,
such as fixing the font issue with the 3dfx version
of Tomb Raider when using non-Glide mode. Portions
of the code are ported from DOSBox ECE. (Wengier)
- Added OpenGL shader support by porting the feature
from DOSBox SVN. GLSL shaders are now supported in
both SDL1 and SDL2 builds, and this also allows
pixel-perfect scaling to be enabled for the OpenGL
outputs. The config option "glshader" (in [render]
section) can be used to specify a GLSL shader file
or a built-in shader when the output is set to
"opengl" or "openglnb". For example, you can use
the setting "glshader=sharp" (built-in shader) or
"glshader=pixel_perfect" (with GLSL shader file)
for the pixel-perfect scaling mode. The Windows
installer will also copy several GLSL shader files
to the "glshaders" subdirectory of the DOSBox-X
install directory to be used directly. (Wengier)
- Support for FluidSynth MIDI Synthesizer is now
included in the Windows Visual Studio builds by
default. Set "mididevice=fluidsynth" and a sound
font (e.g. GeneralUser_GS.sf2) to use it. (Wengier)
- Updated the MUNT MT32 emulation library to its
latest version 2.4.0. A few new MT32 config options
(starting with "mt32.") are added to [midi] section
of the DOSBox-X configuration. (Wengier)
- The DOSMID and MPXPLAY programs have been built
into DOSBox-X, both can be found on the Z drive and
feature full-screen user interfaces with support
for command-line usages (use /? option for help).
DOSMID can play MIDI/RMI/MUS audio files, whereas
MPXPLAY is a powerful and flexible audio player
with support for a variety of formats including
AAC/AC3/APE/FLAC/MP2/MP3/MPC/OGG/WAV and more with
playlist support. (Wengier)
- The mounting options "Mount as Hard Disk", "Mount
as CD-ROM", "Mount as Floppy", "Mount disk image"
and "Boot from disk image" (previously only for
Windows) in the "Drive" menu and the "Quick launch
program..." in the "DOS" menu are now available
for non-Windows platforms as well. (Wengier)
- Added "Shared Windows clipboard functions" menu
group under "Main", which allows you to enable
or disable the different ways for DOSBox-X to
communicate with the Windows clipboard. (Wengier)
- Added config option "dos clipboard api" in [dos]
section to control whether to enable the DOS APIs
for communications with the Windows clipboard for
DOS applications. (Wengier)
- Added config option "clip_mouse_button" to select
a mouse button (middle, right, or none; with right
mouse button being the default) for copying to and
pasting from the Windows clipboard. (Wengier)
- The mouse wheel movements will be automatically
converted into up/down arrows by default for the
integrated DOS now. You can also enable it for
the guest system from the "Main" menu ("mouse wheel
movements" -> "Enable for guest systems also") or
from the config file. (Wengier)
- Added "Emulate CPU speed" menu group (under "CPU")
to emulate the speed of a specific CPU class. The
cycles to emulate are approximations of the actual
CPU hardware, and they are available thanks to data
provided by the user maximus105. Also added config
option "cycle emulation percentage adjust" in [cpu]
section for users who would like to make relative
percentage adjustments (between -25% and 25%) in
case it is necessary. (Wengier)
- Added SORT command from FreeDOS. It can be used to
sort input, e.g. "TYPE FILE.TXT | SORT". (Wengier)
- Added DELTREE command to delete a directory and all
the subdirectories and files in it as in a real DOS
system. Please use it with caution. (Wengier)
- The command for starting the Configuration Tool has
been renamed from "SHOWGUI" to "CFGTOOL". A new
command-line option -gui is added to CONFIG command
to start the Configuration Tool as well. (Wengier)
- DOSBox-X now includes ZIP.EXE and UNZIP.EXE from
InfoZip for zipping and unzipping files in DOS.
Both programs will appear on the Z drive. (Wengier)
- The powerful DOS CD player called SJGPLAY has been
built into DOSBox-X. You can now find the program
CDPLAY.EXE in the Z drive for playing Audio CDs in
DOS, which supports both graphical and command-line
usage, and you will also find a text file named
CDPLAY.TXT in the Z drive for a quick usage guide.
A zip package including full documentation and some
extras will additionally appear as SJGPLAY.ZIP in
the Z drive. This freeware program was written by
Steve Gray and is now included in DOSBox-X with
explicit permission of the author. (Wengier)
- DOSBox-X will now by default show a quit warning
if a DOS program or game, or a guest system is
running. The previous behavior can be set with
"quit warning=autofile". (Wengier)
- The welcome banner when DOSBox-X starts has been
improved for a better looking and should provide
more helpful instructions for users. (Wengier)
- Add new "Help" menu which includes menu items
"Introduction", "DOSBox-X homepage", "DOSBox-X Wiki
guide", "DOSBox-X support" and "About". (Wengier)
- Improved the message when automatically re-running
the executable which failed with the "Packed file
is corrupt" error. Also added the "autoloadfix"
config option which when set to "false" will not
automatically re-run such programs. (Wengier)
- The display for several section names in DOSBox-X's
graphical configuration tool has been capitalized
or modified otherwise to look better. A default
shortcut key HOST(F11/F12)+C is added for starting
the graphical configuration tool. (Wengier)
- Added the "Show advanced options" checkbox in the
main screen of the Configuration GUI to toggle
whether to display all config options for the
sections. If unchecked (default), it will show
common config options instead of all of them. A
new config option "show advanced options" is added
which when set to "true" will make the checkbox
checked by default. (Wengier)
- Added code to cap the scan line length given to
the VESA BIOS given the video mode. This prevents
VBETEST.EXE from doing test patterns smaller than
the actual display, which can happen with 32bpp
320x200 modes and 1MB or less video RAM.
- VESA BIOS Set Scan Line Length fixed to properly
report and handle scan line length for 16-color
SVGA planar modes. VBETEST 16-color modes now
display correctly.
- Added option to control whether VESA BIOS panning
(the original VBE call) waits for vsync.
- Moved video related config options from [dosbox]
section to its own [video] section. These options
in existing config files will be automatically
redirected to the [video] section from the [dosbox]
section when DOSBox-X starts. Windows installer can
also move such config options from existing config
files automatically. (Wengier)
- Cleared modem phone book before parsing it. Thank
NicknineTheEagle for the improvement.
- Improved the help message of MOUNT command. Also
added option -examples to show its usage examples,
similar to IMGMOUNT and IMGMAKE commands. (Wengier)
- Fixed freeze when trying to reboot the internal
DOS when using a different code page and it is in
CGA or EGA emulation modes. (Wengier)
- DOSBox-X will now try to use the internal DOS date
and time (instead of always using the host date and
date) for file modification timestamps. (Wengier)
- Added menu item "Expanded memory (EMS)" under "DOS"
menu to dynamically enable or disable EMS memory
at run-time. You can now also modify EMS memory
with CONFIG command from command-line. (Wengier)
- Added config option "drive z hide files" (in [dos]
section) to hide or remove files listed (separated
by spaces) from the Z drive. If a file has a "/"
prefix (e.g. "/INTRO.COM"), then the specified file
will have the hidden attribute ("DIR /A" will list
all such files) instead of completely disappearing
from the Z drive. (Wengier)
- You can now add your own programs or files to the
Z drive! Put your programs or files in the drivez
directory located in the DOSBox-X program folder
or the DOSBox-X configuration directory, and they
will automatically appear on the Z drive. If any of
the files have the same names as the built-in ones,
they will replace the built-in files. For example,
you can replace the built-in EDIT.COM and XCOPY.EXE
programs (from FreeDOS) with MS-DOS counterparts.
Windows installer will now automatically create a
drivez directory with a README.TXT file in it too.
For subdirectories support please use MOUNT command
to mount local directory instead. (Wengier).
0.83.5
- Release notes for this version:
https://dosbox-x.com/release-0.83.5.html
- Windows installer now offers the option to upgrade
the DOSBox-X config file (dosbox-x.conf) to the
latest version format automatically while keeping
users' current settings. It can also add a context
menu for executables (.exe, .com, .bat), config
files (.conf) and folders in the Windows Explorer
so that you could quickly run or open them with
DOSBox-X from the Windows Explorer. More icons
are added to the DOSBox-X program group within the
Start menu as well. (Wengier)
- Added config option "startbanner" in [dosbox]
section which if set to "false" would skip the
welcome banner when DOSBox-X starts. Also added
config option "fastbioslogo" which if set to "true"
will skip the BIOS logo (replacing the command-line
option -fastbootlogo). A new command-line option
"-fastlaunch" is added to enable fast launch mode
by skipping both the logo and the banner. (Wengier)
- Added config option "ega per scanline hpel" in
[dosbox] section to control whether EGA emulation
latches hpel at display start (as VGA emulation
does) or allows hpel to change per scanline.
Setting the option to false is needed for some
games like Commander Keen.
- Support for mounting CD images with a sector size
of 2448, used by for example the MDF image of the
game Grand Theft Auto. (Wengier)
- Allowed Sound Blaster to be enabled by the games
"Desert Strike" and "Jungle Strike". (Wengier)
- Sound Blaster Pro emulation now maps DSP commands
0x41 to 0x47 as aliases of 0x40 (set time constant)
to support broken demoscene code that uses 0x41
in that way. Yes, such code would obviously break
on clone cards and the SB16. Added a config option
"dsp command aliases" in [sblaster] section to turn
it off for debugging. Alias is documented on Vogons
forums where someone made a SB Pro clone card.
- Fixed the issue with CD audio play by porting the
audio code from DOSBox ECE. (Wengier)
- COPY command now assumes /Y automatically when
running in the batch file or with CALL command
(or COMMAND /C) as in real DOS. (Wengier)
- DOSBox-X will allow control characters 8 (BS),
9 (TAB), 26 (SUB), and 27 (ESC) when executing GOTO
command in batch files without warnings. (Wengier)
- Normal core: REP MOVSD now checks segment limits
for ES:(E)DI and throws a GP fault if exceeded.
Demoscene productions marked as using VESA BIOS
modes and scribbling on the VGA BIOS are relying
on segment limits and GP faults to fake a linear
framebuffer.
- Added config option "vesa bank switching window
range check" to allow disabling the VESA BIOS
window number range check when called on to
bank switch. Needed for "Pill" by Opiate in the
end credits, which for some reason requires a
call for window number 0xFFFF to succeed in order
to draw credits without glitching.
- Added config option "vesa bank switching window
mirroring" for instructing VESA BIOS to ignore
bank switching window parameter when asked to
get/set bank switching window setting. Needed for
some old demoscene and game applications that
assume Window B is available, and will not render
SVGA properly without it.
- Added config option "quit warning" to indicate if
DOSBox-X should warn show a warning message when
you try to close the DOSBox-X window. If set to
"auto" (default), DOSBox-X will warn only if at
least one file handle is still open, or you are
currently running a guest system. (Wengier)
- Added command-line option "-defaultconf" to use the
default config settings. (Wengier)
- Added command-line option "-defaultdir" to specify
a directory (instead of the current directory) as
the working directory. DOSBox-X will look for the
dosbox-x.conf file in this directory. (Wengier)
- The -winrun command-line option will also enable
LFN support with "lfn=auto" on Windows. (Wengier)
- VER /R now shows DOSBox-X's Git commit SHA1, in
addition to the build date and other version
information shown by the VER command. (Wengier)
- Fixed that joystick may not work with the setting
"usescancodes=auto" when a non-US keyboard layout
is activated on the SDL1 build. (Wengier)
- DOSBox-X will now search for system fonts if the
fonts required for the printing feature cannot be
found in the FONTS directory. (Wengier)
- Added menu item "Send form-feed" under the DOS menu
for manually ejecting new pages to print. (Wengier)
- Added "Quick launch program..." menu (under "DOS")
to quickly run the specified program as selected
by the Windows file browser in DOSBox-X. (Wengier)
- Added "Drive information" menu item under "Drive"
menu to show information for the specified drive,
and added "Show mounted drive numbers" menu item
under "DOS" menu to show details for all mounted
drive numbers (0-5). (Wengier)
- The command "Swap CD" now swaps only CD drives (as
the name), not all non-floppy drives. Also added
"Swap disk" menu item under the "Drive" menu for
swapping individual mounted drives. (Wengier)
- IMGMAKE now tries to resolve home directory (~)
on Linux and macOS platforms. Also improved the
help message for this command. (Wengier)
- Fixed unmounting swap disks when unmounting drives
with MOUNT or IMGMOUNT command. (Wengier)
- Fixed possible failure when mounting .VHD images,
and the issue that leading colon (:) or read-only
marker may not work for such images. (Wengier)
- IMGMOUNT command without parameters now shows the
disk position and number of swap disks, as well as
IDE controller (if applicable). Also added option
-examples to show its usage examples. (Wengier)
- Add "-ro" option for IMGMOUNT command to mark all
disk images as read-only at once. You could also
mark read-only disk images individually using the
leading colon as in previous versions. (Wengier)
- The default value for "output" (in "sdl" section)
is now "default", which will default to the value
according to your platform. (Wengier)
- The -Q (quiet) option of MOUNT, BOOT and RESCAN
commands now silences virtually all outputs (error
and normal messages) of these commands. (Wengier)
- Worked around the mounting issue with LaunchBox,
by allowing a mounting command-line with single
quotes like MOUNT C 'X:\DOS' on Windows. (Wengier)
- Unmounting ISO drives will auto-unmount associated
El Torito floppy drives (if any) too. (Wengier)
- Updated xxHash library by Yann Collet from 0.7.4
to the stable version 0.8.0. (Wengier)
- Added support for the OPL2 audio board by setting
the config option "oplemu=opl2board".
- The save state feature now tries to save and then
restore the mounted drives of all types (if the
paths or image files still exist on host system).
This fixes the "save state corrupted" error while
trying to load saved states but the drives are not
yet mounted in DOSBox-X. (Wengier)
- The save state feature now verifies the emulated
machine type (VGA, PC98, etc) too when loading a
saved state. All confirm and error dialog boxes
for saving or loading states appear in a cross-
platform manner now, instead of only on Windows
systems. Also added the option to remove the saved
state in the selected save slot. (Wengier)
- Increased the number of save slots from 10 to 100.
Each page in the save slot menu (under "Capture")
still shows 10 slots as before, but you can now go
to the previous or next page (up to 10 pages) for
more save slots (100 in total). (Wengier).
- The [pci] section is now the [voodoo] section, and
the config option "voodoo" (the only option of that
section) is now named "voodoo_card" within the
[voodoo] section to make clear it is for emulating
the Voodoo card hardware. Also added config option
"voodoo_maxmem" (default: true) to specify whether
to use the maximum memory size (12MB instead of the
standard 4MB) for the Vooodoo card. (Wengier)
- Added support for Glide wrapper. It can be enabled
with the new config option "glide" set to "true"
in [voodoo] section. The library file glide2x.dll
(Windows)/libglide2x.so (Linux)/libglide2x.dylib
(macOS) is required for Glide to work. Be sure to
use 32-bit dll for 32-bit DOSBox-X binary, and
64-bit dll for 64-bit DOSBox-X binary. (Wengier)
0.83.4
- Fixed loading saved states in fullscreen mode with
the "aspect=true" setting. (Wengier)
- Added config option "saveslot" to select default
save slot (1-10). The timestamps for the saved
states will also be shown in the menu. (Wengier)
- Added key mapper for sending the Ctrl+Alt+Del key,
with HOST(F11/F12)+Del by default. (Wengier)
- Added dosbox-x.conf setting to ignore the EGA/VGA
"extended memory" bit. It was originally defined
back when stock EGA/VGA cards could ship with 64KB
of memory. The option is needed for DOS games that
accidentally clear the bit when using unchained
256-color modes (Mr. Blobby).
- Added new default value "auto" for the setting
"usescancodesauto" (in [sdl] section of the config
file) to work around issues with non-US keyboard
layouts on SDL1 builds. (Wengier)
- Added code pages 808, 850, 852, 853, 855, 857,
858, 869, 872 for host to guest codepage mapping
on mounted local or overlay drives. (Wengier)
- The mapper options "Increase recording volume" and
"Decrease recording volume" as well as function
"Show sound levels" (from MIXER command) appear
now as menu items (under "Sound") too. (Wengier)
- Fixed inputting of ASCII character 224 and 240
in Windows SDL2 or MinGW builds. (Wengier)
- Fixed possible DPMI error when running Windows
98 installation from the DOSBox-X shell without
using a batch file. (Wengier)
- Fixed a bug in the FAT driver that can cause
a byte to get lost if writing up to the end of
a cluster, which seems to be behind the
corruption with program group files when running
Windows for Workgroups 3.11 from DOSBox-X shell.
[https://github.com/joncampbell123/dosbox-x/issues/1758#issuecomment-665193066]
- Unknown INT 2Fh calls are now debug output, not
an error.
- Added VESA BIOS mode 68h alias as indicated on
the Vogons forum.
- Fixed handling of config commands with spaces
when the "shell configuration as commands"
setting is enabled (quotes are needed in such
cases). Also added "Config options as commands"
toggle menu (under "DOS") to enable/disable the
feature from menu. It is disabled by default to
avoid name clash with other programs. (Wengier)
- Added "Enable quick reboot" toggle menu (under
"DOS") so that when enabled, DOS restart calls
will reboot the emulated DOS (integrated or
guest DOS) instead of the virtual machine in
DOSBox-X. Also, you could change the default
setting for this by setting the new "quick
reboot" config option in "dos" section (Wengier)
- Added new "Reboot guest system" menu item (under
"Main") to reboot the kernel of the integrated
DOS or the guest DOS directly. The previous menu
item "Reset guest system" has been renamed to
"Reset virtual machine" which will restart the
virtual machine in DOSBox-X instead. (Wengier)
- Added "Reported DOS version" sub-menu (under
"DOS") to dynamically change the reported DOS
version (3.3, 5.0, 6.22, 7.1, or custom). This
may enable/disable long filename (LFN) support
with the default "lfn=auto" setting. (Wengier)
- LS is now an external command appearing on drive
Z: as LS.COM instead of a builtin shell command.
This avoids name clash with game "Links LS 97"
which has the main executable named LS.EXE. Also
fixed minor issues in this command. (Wengier)
- Fixed the game "Disney's Duck Tales: the Quest
for Gold" not able to start. (Wengier)
- Improved Configuration GUI's handling of "4dos"
and "config" sections. Also added the "Save..."
button just before the "Close" button. (Wengier)
- Added "euro" config option (in [render] section)
to display Euro symbol instead of the specified
ASCII character in any code page. (Wengier)
- PC-98 CG MMIO writes fixed to limit writes only
to the user-defined areas, same as the IO writes.
This fixes "Niko Niko" that appears to write a
few too many 0xE1 bytes when filling text
attribute RAM and into the CG MMIO region.
- With -winrun command-line option or the setting
"startcmd=true" (Windows only), you can now
directly launch Windows programs on mounted local
or overlay drives to run on the host. The option
"startwait=false" can be used to disable waiting
for Windows programs after started. This can also
be toggled from the "DOS" menu. (Wengier)
- Added START command to run commands on Windows
host system. The /MAX, /MIN, /HID options can
be used to run the specified program maximized,
minimized, or hidden (they can be shortened to
+, -, _ respectively). This command is disabled
by default, but can be enabled by either the
"startcmd" config option (in [dos] section) or
the -winrun command-line option (which will also
enable the CLIP$ device for Windows clipboard
support). START will run commands listed in the
"startincon" config option (separated by space)
in the Windows Command Prompt and wait for a key
press before exiting. (Wengier)
- Added SHELL= option to the [config] section in
dosbox-x.conf to specify an alternative shell,
e.g. "SHELL=4DOS.COM". (Wengier)
- Added built-in 4DOS 8.00 shell for 4DOS features
and capabilities. There is now a [4dos] section
in the dosbox-x.conf file to act as the 4DOS.INI
config file if you use this shell. (Wengier)
- Added "Mouse wheel movements" menu (under "Main")
to enable or disable the mouse wheel movements
to arrow (up/down etc) feature. (Wengier)
- Added "Quick right mouse button copy/paste" menu
item toggle to allow quick Windows clipboard copy
and paste via the right mouse button without any
key modifier that may have been specified by the
config option "clip_key_modifier". (Wengier)
- Fixed mounting a directory with command-line like
"dosbox-x .", and fixed mounting disk images with
spaces via the "Drive" menu on Windows. (Wengier)
- Added "mountwarning" config setting so you could
optionally disable the warning when attempting to
mount C:\ in Windows or / otherwise. (Wengier)
- IMGMOUNT now assumes "-fs none" automatically if
a drive number is specified instead of a drive
letter. Moreover, it will assume the image file
name "IMGMAKE.IMG" if no filename is specified by
the user. Also improved the command's handling of
El Torito floppy drives, e.g. you can use option
"-bootcd d" instead of "-el-torito d". (Wengier)
- IMGMAKE warning replaced to indicate a general
incompatibility between MS-DOS/SCANDISK and
cluster sizes 64KB or larger.
- IMGMAKE command will now use the image file name
"IMGMAKE.IMG" if no file name is specified (either
in the mounted local directory or in the DOSBox-X
program directory if the current directory is not
a local directory). The command now also supports
a -force option to force overwrite the image file
if it already exists. Furthermore, IMGMAKE will
delete the generated image file if an error occurs
during the image file creation. (Wengier)
0.83.3
- IMGMAKE can now generate FAT12, FAT16, and FAT32
filesystems. New option "-fat" is added to select
the filesystem for the disk image.
- Fixed command-line like "./dosbox-x /dir/app.bat"
not able to launch the specified program (Wengier)
- Fixed bug in DIR command's /P option which might
cause it to not work properly. (Wengier)
- The default key modifier for the Windows clipboard
copy & paste via the right mouse button feature is
now "shift" instead of "disabled". (Wengier)
- Single-stepping in the debugger with the 286 and
8086 normal cores now works correctly when stepping
over instructions with a segment prefix.
- Pentium MMX instructions now only available for
Pentium MMX or higher. Fixed the bug that allowed
MMX instructions for Pentium and lower if programs
ignored the CPUID feature bits. Also fixed Pentium
MMX instructions so that they work in both 16-bit
real mode and 32-bit protected mode to match how
they work in real hardware (joncampbell123)
- Updated DOSBox-X's implementation for Pentium MMX
instructions to latest version by kekko (Wengier)
- DOSBox-X will try to automatically run the program
with LOADFIX if the error message "Packed file is
corrupt" is detected. (Wengier)
- MOUNT command can now mount a drive to the UNC
root path in the form \\ComputerName\SharedFolder
on Windows systems. (Wengier)
- Improved the HX-DOS build package to make it fully
automated: all required HX DOS Extender files will
be included in the package, and dosbox-x.exe can
now be run directly in a real DOS system without
external requirements. (Wengier)
- Fixed incorrect frame rate reported by 3Dfx Voodoo
emulation (rderooy, backported from DOSBox SVN).
- Added the "Boot from disk image" menu item (A:, C:,
and D: drives only) in the "Drive" menu to boot the
specified disk image directly in Windows. (Wengier)
- Support for converting mouse wheel movements into
keyboard presses like arrow keys, configurable by
the option "mouse_wheel_key" (default is 0 which
disables this feature). When set to 1, mouse wheel
movements are converted to up/down arrows. Setting
it to 2 or 3 converts such movements to left/right
arrows or PageUp/PageDn keys respectively. (Wengier)
- Support for reloading the keyboard mapper file with
the config -set command. (Wengier)
- IMGMOUNT command without parameters will show disk
names for drive-number only mounts. (Wengier)
- IMGMOUNT can now autodetect DOS <= 3.21 harddisk
geometry with MFM sector images (rderooy & Wengier)
- IMGMOUNT -fs none fixed to use same geometry detect
function that FAT filesystem mounting uses.
- Added suppprt for mounting overlay drives using MOUNT
command with "-t overlay" option. Backported from
DOSBox SVN and adopted for DOSBox-X with additional
features such as long filename and PC-98 support, it
allows the users to redirect new and changed file(s)
to a different location transparently. (Wengier)
- Cleaned up the DPI awareness auto-detection code to
allow Visual Studio builds to again run on Windows 7.
Meanwhile, MinGW builds (either SDL1 or SDL2 version)
are still required for Windows XP systems. (Wengier)
- Updated Nuked OPL3 to latest version 1.8 for accurate
OPL3 emulation (Wengier)
- Added AUTOTYPE command to perform scripted keyboard
entry into a running DOS program or game. Ported from
DOSBox-staging, it can be used to reliably skip intro,
provide input to answer initial startup or config
questions, or conduct a simple demo. (Wengier)
- Added code page 866 (Cyrillic Russian) to support
host to guest code page mapping (tuffnatty)
- Mouse buttons (left, middle, right) can now be mapped
to keys in the keyboard mapper. (Wengier)
- Support for mounting .cue files with MP3/OGG/WAV/FLAC
compressed audio tracks. (Wengier)
- Rewrote the Windows installer for DOSBox-X, as well as
the building script for the installer. All required
build tools including the Inno Setup Compiler are now
provided in the repository and will be automatically
called by the building script. (Wengier)
- Added config option "mapperfile_sdl2" for SDL2 builds.
SDL1 and SDL2 builds of DOSBox-X can not use the same
mapper file, or they will likely malfunction. Adding
this option allows SDL1 and SDL2 builds of DOSBox-X
to work with the same dosbox-x.conf file. (Wengier)
- Added GUI menu option under "DOS" to change the long
filename setting (enable, disable, or auto). (Wengier)
- Improvements and fixes to the save/load state feature:
It now supports Sound Blaster Goldplay mode;
It now saves PC-98 FM interrupt state so that reloading
state does not cause hung music;
It is also fixed not to crash when used within a guest
operating system (when the DOS kernel has been shut down
using the BOOT command);
It now supports memory size up to 1GB;
It will save and verify the DOSBox-X version and build.
States saved by DOSBox-X in one platform (e.g. 64-bit
Windows) may not work in another (e.g. 32-bit Linux).
The GUI menu will show if the save slot is empty, and if
not the program name of save state will be displayed.
- Re-ported and improved the save state feature for saving
and loading states with support for up to 10 save slots.
They can be selected from the "Capture" menu. (Wengier)
- Added COUNTRY command to set country code for country-
specific date and time formats. For example, the command
"COUNTRY 61" sets the country code to 61 (International
English) which uses the DD-MM-YYYY date format instead
of the default (U.S.) MM-DD-YYYY date format. (Wengier)
- DOS 440Dh IOCTL function 67h (get access flag) added to
allow FDISK.EXE to determine FAT filesystem type. Also
implemented function 40h (set device parameters) and
function 46h (set volume serial number). (Wengier)
- Unknown DOS 440Dh IOCTLs warnings now indicate whether
triggered by call or query.
- S3 VESA BIOS mode number for 1024x768 32bpp changed to
avoid conflict with Windows 95 S3 driver and 800x600
16bpp mode.
- FAT driver no longer mounts FAT32 volumes unless the
DOS version is 7.1 or higher, and it no longer mounts
FAT16B LBA volumes unless the DOS version is 7.0 or
higher. These are to mimic the MS-DOS behavior.
- Fixed FAT driver not to attempt to mount partitions that
have nothing to do with the FAT filesystem (such as
type 0Dh and extended LBA partition tables). Also fixed
the FAT driver to not assume partition start sector 63
if it cannot identify a partition to use.
- Added code to FAT driver to identify telltale pattern
left by Microsoft FDISK when a partition is created (but
not yet formatted) and reject.
0.83.2
- Added help messages for some supported commands. (Wengier)
- Added phone book support for the emulated modem. There is
a new phonebookfile= option in the [serial] section. The
phone book file entries need to be in the format of:
"<dummy number> <hostname/ip:port>" e.g.
5551234 cavebbs.homeip.net:23
Thank NicknineTheEagle for implementing this feature.
- Implemented the missing EMS subfunctions 52h and 59h by
porting the patch that adds them (Wengier)
- Fixed issues with the "config -wcd -all" command and other
updates to the CONFIG command (Wengier)
- Added [config] section in dosbox-x.conf to resemble DOS's
CONFIG.SYS file. It currently supports REM, BREAK, NUMLOCK,
FCBS, FILES, DOS, DEVICE/DEVICEHIGH, INSTALL/INSTALLHIGH,
SET and LASTDRIVE commands. The file CONFIG.SYS will appear
on the Z: drive, similar to AUTOEXEC.BAT file. The [config]
section can be bypassed with the -noconfig command-line
option or with the secure mode enabled (Wengier)
- Moved PC-98 related config options (starting with "pc-98 ")
from [dosbox] and [dos] sections to its own [pc98] section.
These options in existing dosbox-x.conf/dosbox.conf files
will be automatically redirected to the [pc98] section from
the other sections when DOSBox-X starts (Wengier)
- The user directory DOSBox-X uses has been changed to use the
DOSBox-X directory (e.g. from ~/.dosbox to ~/.config/dosbox-x
on Linux platform). It will be read *after* the dosbox-x.conf
file in the current directory (Wengier)
- Config option "dpi aware" now supports the "auto" setting
to auto-decide on the best setting for the platform. This
fixes very small window issue on high DPI devices such as
Microsoft Surface tablets. (Wengier)
- Added DTASEG, DTAOFF, and PSPSEG as hex value constants to
the debugger interface to aid in debugging DOS programs.
- New command-line option -helpdebug added to list debug-
related command-line options. The standard -? / -h / -help
command-line option will no longer list them (Wengier)
- Implemented LFN support for FAT driver, so that it is now
possible to view directory list, create or open files and
directories etc with long filenames on FAT12/16/32 drives
just like on mounted local drives.
- FAT driver cleaned up and fixed to avoid edge cases that
can corrupt directory entries and leave lost clusters
on the disk, also fixed to always report root directory
as a directory through the GetFileAttribute INT 21h call,
needed by MOVE.EXE and XCOPY.EXE to work properly.
- IMGMOUNT auto geometry detection will assume LBA disk
and fake C/H/S geometry if the disk is 4GB or larger,
the MBR lacks executable code, or the first partition
is Windows 98-style LBA FAT16 or FAT32.
- IMGMOUNT now assumes ISO type by default if the image file
extension is .iso/.cue/.bin/.mdf. No need for "-t iso" in
this case; but (if applicable) it can be overridden by for
example "-t hdd". (Wengier)
- IMGMOUNT command (no parameters) now lists mounted FAT/ISO
drives and mounted drive numbers, also SUBST command (no
parameters) now lists mounted local drives (Wengier)
- INT AH=36h fixed to convert free space but maintain a
cluster size (bytes/sector * sectors/cluster) that is less
than 64KB to avoid divide by 0 crashes with FORMAT.COM /S
- Added FAT32 free/total disk space API for FAT driver, and
updated INT 21h AX=7303h to call it. FAT driver now provides
FAT32 extended disk free/total through FAT32 API and 2GB
limited free/total through INT 21h AH=36h for older DOS
programs. Shell DIR command updated to use FAT32 free space
API to show free space even on FAT32 partitions larger than
2GB, but only if the DOS version is set to 7.1 or higher.
- Added FAT32 INT21h and IOCTLs needed by MS-DOS 7.1/Windows 98
versions of SCANDISK.EXE and FORMAT.COM, such as DOS functions
for "FAT32 extended" absolute disk read and write.
- Improved FAT32 support to the FAT driver, including direct
support for FAT32 drives in the DOSBox-X command shell. Files,
directories and volume labels on FAT32 drives can be listed,
read from or written to just like on FAT12/16 drives.
- Added DOS IOCTL read/write logical device track functions so
that FORMAT.COM is able to verify and modify the partition table
to successfully format a hard drive image. Also added stub to
DOS IOCTL "format device track" for FORMAT.COM.
- You can now force unmount a drive and then mount it to a new
directory in one command, e.g. "MOUNT C C:\DOS -U" (Wengier)
- REN command can now rename directories (in addition to files) on
FAT drives just like on local drives (Wengier)
- Several improvements to DEL command, such as a new /F option to
force delete of read-only files, and improved handling when the
argument is a directory (Wengier)
- LS command added to list directory contents. It does not support
all options as in Unix/Linux platform (Wengier)
- DIR /O & /OG supported in addition to /ON|/OE|/OS|/OD options.
Options such as /-O & /-A can be used to override /O, /A etc if
they are specified in the DIRCMD environment variable (Wengier)
- DIR and VOL commands now display real serial numbers for mounted
local drives (Windows only) and FAT drives (Wengier)
- Fixed SYS command not working properly (Wengier)
- DOS kernel INT 21h function Set File Attribute no longer
allows changing volume label attributes and fixes directory
attributes in order to prevent filesystem corruption.
This prevents Windows 95 Setup from creating WINBOOT.INI
and then changing it into a directory with the call.
- FAT driver bugs fixed where a newly created zero length file
combined with a lseek() can corrupt filesystem structures
(root directory and/or the second FAT table). This fixes
filesystem corruption when running Windows 95 install.
- Enabled printer emulation for non-Windows OSes (Linux,
Mac OS X, etc.). FreeType2 is required to enable
printer emulation at compile time.
- Added command-line option "-o" for MOUNT command so that
it can be specified whether to report mounted local drives
as remote (network) drives. It is "auto" by default just
like the virtual drive Z:.
- Added config option "drive z is remote" in dosbox-x.conf
to report drive Z: as a remote (network) drive. It is
"auto" by default, which will try to prevent SCANDISK.EXE
from Windows 9x installs to scan and "repair" drive Z:
which is not backed by a disk filesystem.
- Fixed clip_key_modifier setting not working when it is
set to alt, ctrl or shift in the SDL2 build. (Wengier)
- Sending "Ctrl+Alt+Del" key from the menu will now reset
the system within DOSBox-X when the integrated DOS or a
real DOS booted from a disk image is active. (Wengier)
- PC speaker output fixed not to timeout and stop rendering
unless the PC speaker output is not emitting anything
audible anyway (Fix for Sopwith 1 and 2).
- Added ALIAS command to define or display aliases.
- "HELP command" now works the same as "command /?" for
supported internal commands. (Wengier)
- Improved handling of quotes in some commands. (Wengier)
- Added -set command-line option to change config options.
It can be specified multiple times for multiple options,
overriding any options in the config file. For example,
the command "dosbox-x.exe -set machine=pc98" will force
DOSBox-X to start in PC-98 mode. (Wengier)
- Re-added full drive menu items for the Windows platform.
The "Boot from drive" item (A:, C: and D: drives only)
should work in other platforms too. The BOOT command is
also improved to allow e.g. "BOOT A:" to work. (Wengier)
- INT 10h vector now points into VGA BIOS as a workaround
for DOS programs that use vector location as part of
their EGA/VGA detection. This fixes blink attribute
and EGA/VGA detection failure with SuperCalc 3 and
SuperCalc 4. This option, enabled by default, can be
disabled or enabled from dosbox-x.conf.
- Improved long filename (LFN) and SetFileAttr/GetFileAttr
support for PC-98 mode. (Wengier)
- Added config option "lfn" to enable/disable long filename
(LFN) support. With default setting of "auto", LFN support
is enabled if the reported DOS version is at least 7.0.
- Added config option "automountall" (default: false) to
automatically mount all available Windows drives (Wengier)
- The copy & paste Windows clipboard text via the right
mouse button feature now has support for PC-98 mode too
in addition to other modes. (Wengier)
- MPU401 IRQ fixed to properly default to 2 or 9 in IBM
PC/XT/AT mode depending on the "enable slave pic" config
option (rderooy)
- Fluidsynth defaults fixed for better more reliable audio
streaming on Linux and Mac OS X (Wengier and rderooy)
- Improved support for FluidSynth MIDI device by porting
code from DOSBox ECE. Set "mididevice=fluidsynth" along
with other required options such as "fluid.soundfont"
in dosbox-x.conf to use it. The previous config setting
"mididevice=synth" is still supported for alternative
implementation of FluidSynth. (Wengier)
0.83.1
- dosbox-x.conf is now recognized as the default config
file name in addition to dosbox.conf. The sample config
file "dosbox.reference.conf" has been renamed to
"dosbox-x.reference.conf" as well (Wengier)
- Sound Blaster emulation fixed to better handle Goldplay
mode detection false positive in 1994 demoscene demo
myth_dw.zip when using Sound Blaster Pro setting in
the demo. The initial state before music starts is
like Goldplay mode, but when music actually starts the
DMA programmed to normal state without restarting
DMA playback.
- Tandy DAC output fixed to slowly ramp last sample to
zero DC sample (128) when switched off. This fixes
loud popping (DC offset) problems with Tandy DAC
sound effects in Prince of Persia. This new behavior
also seems to match real Tandy 1000 hardware according
to video captures of its audio/video outputs while
playing Prince of Persia on it.
- Tandy/PCjr 3-voice fixed to respond to I/O port 0xC0
regardless of 8-bit or 16-bit I/O (fixes Prince of
Persia).
- Write-protecting a disk image in IMGMOUNT and BOOT
commands now supported by putting a leading colon (:)
before the image file name. Works with disk swapping;
e.g. "BOOT :C:\DISK1.IMG C:\DISK2.IMG" only write-
protects C:\DISK1.IMG but not C:\DISK2.IMG. The new
config option "leading colon write protect image" can
be used to disable or enable this behavior (Wengier)
- Support for changing DOSBox-X internal time (Wengier)
- Support for pipes (|), e.g. "DIR | MORE" should now
work as expected; it is recommended to set the %TEMP%
(or %TMP%) environment variable to a writable directory
inside DOSBox-X before using pipes (Wengier)
- Improved redirections using "<" or ">" (Wengier)
- Improved Ctrl+C handling in some commands (Wengier)
- Improved Tab completion in the command shell (Wengier)
- Improved -get & -set options for the CONFIG command,
e.g. support for config options with spaces (Wengier)
- Improved REN (or RENAME) command to support wildcards
(* and ?) in the source and/or target files (Wengier)
- Some improvements to commands like MORE & VER (Wengier)
- Added BREAK, VERIFY and TRUENAME commands as in a real
DOS system. Type "[command] /?" for help info (Wengier)
- Implemented FOR command to run a specified command for
each file in a set of files. Also added LFNFOR command
to control whether to use long filenames in the FOR
command as in MS-DOS 7+ (Wengier)
- Implemented ATTRIB command to view and set attributes
of files or directories (Wengier)
- Added emulation of R (readonly) attribute bit for
Linux and Unix systems through the user-writable
file mode bits of the filesystem.
- Fixed PC DOS 2000 crash during installation.
- PC speaker: Mode 3 (square wave) and a counter value
of 1 produces a low frequency square wave. Ulrasonic
frequencies do not begin until count == 2. This fixes
helicopter noises in Paratrooper.
- Fixed PC speaker emulation to allow higher PC speaker
frequencies (10x the value of pcrate) to reduce
hiss/noise/aliasing noise that occurs when games
program ultrasonic frequencies into the counter to
"silence" the speaker. "Titus the Fox Marrakech and
Back" should no longer have audible hissing noises
between beeps when the game is using the PC speaker.
- Increased DOS device limit, to avoid E_Exit() crash
if all LPT and COM devices are enabled along with
the new CLIP$ device.
- Minimum MCB free default changed to better reflect
a typical MS-DOS setup with minimal to no drivers.
This should result in a report of 600K-ish memory
free, which is equivalent to Windows 95 without
anything loaded except COMMAND.COM.
- DIR command now supports /S (search all directories)
as well as /A, /AS, /A-S, /AH, /A-H, /AR, /A-R, /AA,
/A-A options for file attribute support; Note that
DIR /A shows all files and directories whereas DIR
alone (without /A) shows all except system/hidden
ones as in a real DOS system (Wengier)
- DIR command now shows the real free disk space on
local drives. It is possible to limit this free space
for certain programs with the -freesize option of
MOUNT command. A new config option "freesizecap" is
added to change the behavior of this option (Wengier)
- DIR command fixed to show the volume label of the
drive you are listing, instead of always the current
drive (rderooy)
- Various improvements to DEL and COPY commands, e.g.
fixed the DEL /P option having no effect, and "DEL ."
deleted all files in the current directory silently;
the COPY command now asks for confirmation before
overwriting files, and it now supports /Y and /-Y
options to change this behavior, which can also be
set from the COPYCMD environment variable. (Wengier)
- Added or fixed help information and/or error messages
for some commands. (Wengier)
- Added support for DOS programs to communicate
with the clipboard in Windows builds. If the
"dos clipboard device enable" setting in
dosbox-x.conf is set to "true" or "full", a DOS
device (default name: CLIP$) will be added to
allow bidirectional communications with the
clipboard (e.g. "DIR >CLIP$" will write the
output to the clipboard, and "TYPE CLIP$" will
show the clipboard contents). Alternatively,
you can set it to "read" or "write" to allow
only read or write access for security reasons.
The DOS device name can also be changed with
the "dos clipboard device name" setting in
dosbox-x.conf. (Wengier)
- Added support for using the right mouse button
to copy and paste from the Windows clipboard; the
config option "clip_key_modifier" can be used to
change the keyboard modifier such as none, alt, ctrl,
shift, or disable this feature (default). (Wengier)
- Updated the PasteClipboard feature in SDL1 build
to support Unicode text translations; also fixed this
feature not working in SDL2 build. The config option
"clip_paste_speed" is added to speed up or slow down
the pasting speed for different DOS programs (Wengier)
- Support for DOSLIB2's w95sysrg/w95sysrs utils to
get/set system registry location in DOS 7+. (Wengier)
- Long filename support added, adapted from
the vDosPlus project. It will be enabled with
an initial DOS version of 7.0 or higher. (Wengier)
- Corrected return value when using option to
fake the installation of SHARE. (Allofich)
- Added code to EMS emulation to print specific
debug information when a PC-98 specific call is
made to remap segment B000h to either system
memory or video memory. I do not have enough
test cases or a setup to test what really happens,
so it will remain a debug message for now.
- Added dosbox-x.conf option to allow emulation of a
DOS environment that lacks ANSI.SYS. NOTE: The
option has no effect in PC-98 mode.
- INT 2Fh now responds to AX=1A00h which is an installation
check to report whether ANSI.SYS is resident.
- Added INT 21h debug logging for file I/O and general
INT 21h usage [patch by ognjenmi]. Added enables for
the logging which are off by default since the INT 21h
and file I/O logging are fairly noisy under normal
usage.
0.83.0
- Added mt32.romdir dosbox.conf configuration option
for users who store the MT32 ROMs elsewhere other
than the current working directory.
- Configuration GUI settings menu is now vertically
divided to ensure that it fits on the screen even
if the window is at minimum size.
- PC-98 GDC status fixed to follow the explicit
definition of one bit as hblank and the other
as vsync instead of carrying over VGA port 3DAh
style logic of hblank/vblank vs vsync. This
fixes the BPS logo scanline effects in PC-98
game 'frontier-universe-bps-neo-kobe-pc98-ia'
- Added dosbox.conf option to select between two
known behaviors in PC-98 mode regarding the PC
speaker and the PIT timer. The default behavior
follows the newer hardware, the alternate setting
is for older games written against the PC-9801
behavior.
- Added dosbox.conf option nocachedir which, when
set, instructs MOUNT to automatically act as if
-nocachedir were given.
- Linux/X11 SDL1 builds fixed not to issue resize
commands to the window to avoid fighting the
window manager. This prevents "spastic resizing"
under Gnome 3 in Centos 8.
- Source tree now includes build script for Linux
users who prefer Clang/LLVM over GCC.
0.82.26
- Debugger console window fixed to choose a smaller
default size in Windows builds.
- Debugger console window now resizes properly
in Windows builds.
- Using F10 (step over) in the debugger to step
over INT 21h when a breakpoint for INT 21h is
set now works correctly, instead of letting the
instruction pointer "stick" there without moving.
- Debugger interface now shows (running/watching)
while RUNWATCH is active.
- Debugger interface now correctly shows (running)
status when F5 is used to resume emulation.
- Debugger toggle reverts back to debugger interface
instead of running state if triggered during a
RUNWATCH command.
- Fixed RUWNATCH command, which was broken by another
fix sometime back designed to stop PIC event
processing while in the debugger.
- Debugger interface fixed to keep the SDL event
handling going during the "pager" routine to
prevent Windows from graying out the main window
as "not responding" in Windows 7/8/10.
- Direct3D support has been fixed to properly render
pixel shaders again that were already written for
other forks.
- Added "Rescan all drives" menu command and mapper
shortcut (Issue #1379 requested by saintfrater)
0.82.25
- Added 1920x1440 4:3 HD VESA BIOS mode and increased
scaler limits to support it.
- VESA BIOS emulation now rejects video modes that
exceed the render scaler architecture's limits,
to avoid frozen screens if set. However, VESAMOED.COM
warns the user, so if the user ignores the warning,
VESA BIOS emulation will allow user-defined modes
that exceed the limits anyway.
- VESAMOED.COM will now warn you if the custom mode
you modified exceeds the render scaler's limits.
- VGA emulation now reports render scaler limits
in the logfile at startup, if debug logging is
enabled.
- Render scaler code now logs a warning when it
rejects a video mode that exceeds the render
scaler limits.
- S3 emulation now allows 16MB of video memory.
- Due to continuous problems with DOS games and a
very long VESA modelist, the defaults for VESA
BIOS options in dosbox.conf have been changed to
limit the modelist to something a late 1990s
VESA BIOS would list. New defaults include a
maximum resolution of 1280x1024, the removal of
4bpp 16-color packed, unusual video modes,
"High Definition" TV broadcast modes, and the
extra explicitly defined 24bpp modes to complement
VBE1.2 32bpp modes. Those options remain
changeable and all limits can be lifted with
settings in dosbox.conf if wanted.
- Allow using "" in the debugger to specify that
a hex value should be used rather than the
contents of the flag with that name. Allows
hex values of AC, AF, CF and DF to be directly
specified. (Allofich)
- 25.COM, 28.COM, and 50.COM now have different
versions for VGA, EGA, and other IBM compatible
video machines. 28.COM now correctly sets 28 lines
for machine=ega. CGA/MDA/Hercules/etc. still use
INT AX=3h for 25.COM.
- Change 25.COM to use INT 10h AX=1114h (8x16) instead
of INT 10h AX=3 (set 80x25 mode).
- INT 10h AX=1111h (8x14) and AX=1113h (8x8), related
to 28.COM and 50.COM, now range check the current
cursor row against number of rows to keep it on
screen.
- Fixed ADDKEY "full" command not turning on the
full core when used with a delay. (Allofich)
- INT 10h AX=101Ah Get Video DAC color-page state fixed
to restore display after blanking it due to Attribute
Controller read and write operations. This fixes
IBM PC compatible MS-DOS game "Blue Force".
- Debugger: "VGA AC" now shows AC disable bits as well
as the internal state indicating whether the last
byte written to 3C0h was handled as the index.
0.82.24
- FDC emulation now allows READ command to look for
sector numbers that are out of range in order to
support booter games that read out of range sector
numbers as part of their copy protection.
- Windows SDL1 window resizing fixed to avoid snapping
and jumping issues when the window is sized down
to the point the menu bar doubles or triples in
height due to menu item wrapping.
- FDC clear DMA terminal count automatically (with a
warning printed to the log) at beginning of FDC
read/write (PC-98 booter game Star Cruiser).
- FDC DMA read/write failure now causes FDC to signal
an error, and the debug output will say so.
- FDC debug output now shows motor bits in the correct
order, not backwards
- CONFIG.COM and MIXER.COM are now registered only at
DOS kernel startup, to resolve their disappearance
after RE-DOS or guest system reset.
- Some OpenGL cleanup and fixes for when compiling for
Mac OS X Catalina.
- Shell startup now prints the actual mapper binding
(whatever it is) for the Host key instead of assuming
F12/F11.
- "Ro" key in PC-98 mode in the mapper interface now
clarifies that it is Ro / _ since the shift state is
the underscore.
- Shell startup code fixed to show F11 for Windows and
F12 for other platforms properly instead of always
showing F11.
- Added BOOT option --pc98-graphics to start up with
graphics layer enabled in order to run HDI images
using QMOUSE and games that expect NEC MOUSE.COM
behavior of showing graphics layer on driver init.
- BOOT now hides graphics layer on startup in PC-98 mode
to reflect real hardware.
- INT 33h mouse emulation now enables graphics layer
on mouse startup and INT 33h AX=0 to imitate NEC
MOUSE.COM behavior seen on real PC-98 hardware. This is
needed for some Orange House games that assume this
behavior, without which the graphics are invisible.
- INT 33h define range functions now include separate
range correction for text mode vs graphics mode.
- Help sections in Configuration GUI have been improved,
they are now easier to browse and read. (aybe)
- CONFIG: added description for 'securemode' (aybe).
- Integer properties are now correctly saved when
they have been changed in configuration GUI (aybe).
- Some scenarios with command history could display
garbage characters from previous/next command (aybe).
- Fixed all hard disk images created by IMGMAKE having
VHD footers. (Allofich)
- Windows Visual Studio solution: (aybe)
- cleaned and clarified project properties for projects
- removed configurations that didn't make sense
- fixed broken debugging
- consolidated to use single versions of SDK and IDE
- enabled faster builds (multi-processor compilation)
- fixed broken builds, e.g. ARM, ARM64
0.82.23
- Serial and parallel file output now disable stdio
buffering so that output is more immediately
accessible to the user.
- Added file output to serial port emulation.
- Parallel port emulation now support both dev: and
file: to specify that LPTx output go to a file,
not necessarily a device by name.
- Fixed bug that capped vmemsizekb to 8KB.
- BIOS bootup screen now shows correct text for CPU
type instead of "? CPU" when cputype=auto.
- PC-98 256-color mode fixed to ignore doublescan
and 200-line bits of the GDC to match real hardware
behavior. This fixes display problems with
"Alone in the Dark"
- BOOT command will now always set 640x200 8-color
graphics mode when booting PC-98 disk images,
to match the apparent behavior of real hardware.
- PC-98 hardware apparently allows writing port 6Ah
to jump directly to 256-color mode from 8-color
mode, update DOSBox-X emulation to allow it.
This fixes the PC-9821 port of "Alone in the Dark".
- Slow CGA memory access handler now wraps to 16KB
correctly, and resolves a segfault that can happen
if the last 16KB is accessed by the guest if
vmemsizekb=16.
- vmemsize default is now -1, which means to pick a
video memory size automatically.
- Added PC-98 INT 1Bh AH=03h SCSI BIOS command, which
allows FreeDOS98 to boot.
- INT 33h emulation fixed not to reset mouse min/max
range if the new video mode is a VESA BIOS SVGA
mode (not a standard VGA mode). Some games seem to
define the mouse min/max range AND THEN set the
VESA BIOS mode, not the other way around.
- INT 33h define range functions now apply rounding
to the max range if the range is close to the
dimensions of the screen, for games like Daggerfall
that set the cursor maximum range to values close to,
but not exactly, the dimensions of the VGA screen.
- INT 33h define range functions updated to accept max
ranges for mapping host to guest if set just after
video modeset or if those INT 33h functions are called
when no mouse buttons are down.
- INT 10h AH=4Fh AL=08h (Set DAC width) now correctly
set AL=4Fh to indicate the call is supported.
- VGA DAC palette writes are now ALWAYS masked to 6-bit
unless 8-BIT DAC mode is ON and enabled. This fixes
palette problems with Amulets and Armor.
- VGA DAC 6/8-bit palette management code simplified
- Added dosbox.conf option to instruct DOSBox-X to leave
the PC speaker clock gate enabled if set, for games
that use that PIT output as a time source. Setting
the option to "true" allows "爆笑三國志" (Bàoxiào
sānguózhì), a game with strange and elaborate timing
code, to run without hanging at the second title screen.
- VGA port 3DAh "undefined bits" setting changed to 0x04
to accommodate "Blues Brothers"
- Configuration GUI: If the settings are scrollable,
tabbing between fields will now auto-scroll to the
field and make it visible.
- In the configuration GUI, scroll wheel input no longer
changes the window focus.
- Set CPU cycles dialog box layout fixed.
- Added 'skip encoding unchanged frames' option to
dosbox.conf. If set, AVI video capture will skip
video frame compression if the frame has not changed
from the previous frame. Option is off by default
at this time in case it causes any issues with users
and their video editing software.
0.82.22
- Added Normal2x render scalers so that 'force scaler'
for 1x2 or 2x1 scalefactors works and you can scale
up 320x200/640x200 VGA modes and 640x200 CGA modes
by 2x.
- Main window titlebar now reflects whether or
not the debugger interface is active.
- Debugger interface now flushes terminal input
upon entering the debugger, so that keyboard
input prior to entering the debugger is ignored.
- Debugger mapper shortcut and menu item are now
a toggle. Selecting once will enter the debugger
and selecting again will resume emulation.
- cycles=max now displays cycle percentage correctly
instead of showing e.g. 100 cyc/ms
- (Allofich) Note and ignore INT 33, AX=53C1 call
for the Logitech CyberMan.
- Fixed odd code addition that disabled (through
the configuration) XMS, EMS, and UMB when
booting a guest OS. This fixes a problem where
those services are not available when rebooting
back into the DOSBox-X shell from a guest OS.
- CGA 640x200 and MCGA 640x480 modes fixed to
have proper refresh rate when machine=mcga,
instead of 140Hz.
- MCGA horizontal active display register
encodes N - 1, not N, according to real
hardware register dumps.
- INT 10h modes 2 and 3 updated set MCGA CRTC
write protect bit, to match real PS/2 hardware
behavior, and to unlock CRTC registers during
mode set.
- PC-98 VSYNC interrupt now fires at vertical
retrace start (as documented) instead of at
active display end behavior borrowed from
DOSBox VGA emulation. This fixes "Tonight"
by Swat.
- Fixed mistake that placed N88 ROM BASIC stub
(something specific to PC-98) in memory even
in IBM PC/XT/AT emulation mode.
- Fixed some callback slot leaks that can cause
DOSBox-X to run out of callback slots if you
reset the guest system too much.
- Fixed invalid callback and errant interrupt
handling during BIOS reset delay that happens
if you use the keyboard shortcut to trigger
system reset.
- XMS emulation resets global enable and local
enable state on XMS emulation startup to fix
crashes related to inability to control A20 gate
after system reset or DOS kernel restart.
- Debugger "SM" command now accepts segment:offset
syntax for memory location to write.
- Fixed INT 21h AH=65h bug that returns DBCS table
for AH=4h that should return filename uppercase
table.
- Configuration GUI property settings are now
shown in a single column wide list with scrolling.
- In the configuration GUI, help dialogs will now
present the help text as a scrollable region if
there is too much to fit on screen.
- dosbox.conf mixer rate will now accept any
sample rate from 4KHz to 192KHz instead of only
fixed specific sample rates.
- cascade interrupt ignore in service setting now
accepts true, false, and auto. "auto" is now the
default, and will choose true or false depending
on machine type for correct emulation either way.
It should no longer be necessary to add
"cascade interrupt ignore in service=true" to
your dosbox.conf every time you want to run a
PC-98 game properly.
- PC-98 FM board emulation will now load SOUND.ROM
into segment CC00h if available, if FM board
emulation is enabled.
- PC-98 INT 18h AH=30h updated to return AH=05h
AL=00h BH=00h if success, AH=00h AL=01h BH=01h
if failure. This is needed to get Puyo Puyo 2
to work, which for some reason fails if a call
to set 15KHz mode works.
- PC-98 LIO and SOUND BIOS entry points, while
still not implemented, have been updated to
print the name of the call according to an
online reference.
- DOS FCB rename now supports renaming the
volume label as MS-DOS does.
- Fixed bug that prevented proper DOS FCB rename
if the FCB used to rename is extended.
- FAT filesystem driver updated to also store
updated volume label in the boot sector of the
partition, as per MS-DOS FAT standards.
- FCB create can now be used to set a FAT
filesystem label. MS-DOS LABEL.EXE works
correctly now.
- FAT filesystem driver now allows LABEL command
to change the FAT volume label of mounted disk
images.
- DOS kernel updated to support basic FCB methods
of deleting/setting the volume label, at least
on local folder mounts.
- DOS kernel will now return the volume label of
FAT filesystems mounted from disk images.
- LABEL setting code fixed not to treat label as
if an 8.3 filename.
- LABEL is no longer a builtin shell command and
appears on drive Z: as LABEL.COM
- LABEL reimplemented to imitate MS-DOS behavior
with regard to how it handles the command line.
- File I/O checking and cleanup (Allofich)
- Integrated commits from mainline (Allofich)
- Handle errant IRQs as a real BIOS does. Also
remove r3263 workaround, as it's no longer
needed.
- Fix flag behavior of several shift/rotate
instructions, cause exceptions and fix
potential 'pop ss' problems
- Add support for Print Screen key and
interrupt. In-game screenshot feature
of Descent and Descent 2 now works.
0.82.21
- Reduced title bar size of the Configuration GUI.
- Fixed sizing and positions of some Help menu dialog
boxes in the Configuration GUI.
- Configuration GUI issues with help text and word
wrap running off the edge of the window have been
fixed.
- INT 21h AX=3702h AVAILDEV returns DL=FFh to match
MS-DOS behavior.
- Added INT 21h AX=6523h, for Microsoft software
that uses it after prompting the user for a Y/N
answer such as FORMAT.COM and FDISK.EXE
- PC-98 MS-DOS kernel now writes fake INT 1Bh device
list to 60:6C to satisfy certain games that need
it for their "master disk" detection.
- Fixed FAT driver bug that caused the allocation
of an extra cluster if writing a file that is
exactly a multiple of the cluster size long.
- FAT driver now assigns current date/time when
creating directories.
- Increased the DTA segment size of the DOS FAT driver
to fix problems with directory searches corrupting
adjacent memory.
- Disk Parameter Block linked list now terminates
with next pointer at FFFF:FFFF instead of 0000:0000
to match general DOS pattern and satisfy some
PC-98 games that enumerate the list.
- INT AH=52h List of Lists now points to the Disk
Parameter Block as well, which allows some PC-98
games that enumerate the list to work.
- Video parameter list and table at BIOS DATA AREA
40:A8 added to MCGA mode, to match real PS/2 MCGA
hardware.
- FAT driver now updates the Disk Parameter
Block when activated, and provides as much
from the FAT filesystem as possible. It is now
possible to run Microsoft MS-DOS 6.22
SCANDISK.EXE on a drive letter attached from
a disk image.
- Disk Parameter Block is now the proper full
size. The limited 9 bytes/block hackery has
been removed.
- Added INT 25h/INT 26h emulation for FAT drives
mounted with IMGMOUNT.
- Fake disk parameter table fixed to indicate one
reserved sector.
- Fixed INT 25h/INT 26h to return an error rather than
silently fail with success. Emulation of these calls
exist currently only as stubs and, according to
source comments, as a workaround for MicroProse
installers. For disk diagnostic software like
Microsoft ScanDisk it is better to signal an error
until INT 25h/INT 26h are fully implemented.
- Added dosbox.conf option to control whether INT 10h
VESA BIOS function AX=4F00h (Get SVGA information)
zeros the entire 256-byte or 512-byte structure or
not. Turning the option off (no zeroing) allows
"Get Saddam!" to run with SVGA and VESA BIOS
extensions enabled without crashing. The developer
calls INT AX=4F00h but does not provide enough
storage space for the full 256 byte structure,
only enough for the base structure defined by VESA.
- INT 2Fh updated to explicitly mention SMARTDRV or
DBLSPACE if values of AX are known to match their
API.
- VESA BIOS modelist now includes S3 OEM video modes
as documented by the RBIL, and needed by Line Wars II.
- OpenGL output now clears 3 frames instead of 2 after
mode change to deal with nVidia hardware that
reportedly triple buffers OpenGL rendering in
Windows.
- INT 21h fixed to always enable the A20 gate through
HIMEM.SYS if dosbox.conf indicates a configuration where
XMS is enabled, the HMA is enabled, and DOS is loaded
high (DOS=HIGH), which is the default configuration
for DOSBox-X.
- XMS emulation fixed not to allow conventional memory
block addresses (source or dest) if it extends past
the 1MB+64KB-16 range normally accessible from real
mode, as per Microsoft XMS test program.
- XMS emulation fixed to disallow XMS block move/copy
with an odd length byte count, per Microsoft XMS
specification.
- XMS emulation no longer allows freeing a XMS block
handle that is still locked, as per Microsoft XMS
specification and testing software.
- Enhance existing INT 68h fix for "PopCorn" by adding
a dosbox.conf option to always keep INT 68h NULL,
so that it's possible to run the game in machine
configurations other than CGA.
- EGA/VGA: Fix "dynamic parameter save area" pointer,
to make sure it's initialized to zero properly.
This is needed to run "Get Saddam!" in VGA mode
without crashing.
- INT 10h AH=12h BL=10h no longer responds in
machine=mcga mode, which allows Thexder to run in
256-color mode properly when emulating MCGA.
- Added code to silence the PC speaker, if it was left
on at reset, at BIOS POST.
- Added pause at BIOS POST (after reset), with
dosbox.conf option to control, so that screen contents
at reset can be seen.
- Writes to unmapped 0xE0000-0xE7FFF in PC-98 mode no
longer print a "write to ROM" warning. PC-98 games
and software like to zero that region whether or not
the 4th bitplane is enabled.
- PC speaker emulation now takes into consideration
the case when the 8254 timer has been given a control
word without a counter value, in which case no sound
is to be emitted until a control word is written.
This fixes "Titus the Fox: To Marrakech and Back"
when the game fails to detect Adlib (OPL2) hardware.
- Adlib polling hack no longer needed.
- Floppy controller emulation fixed to support sector
sizes other than 512 bytes per sector.
- Floppy controller fixed to always set "seek completed"
status bit after seek/calibrate, not just when the
head hits track 0 (programming mistake).
- PC-98 40-column text mode is now supported.
- Integrated commits from mainline (Allofich)
- In the mapper, display disabled items or events
with no binding in grey.
- Implemented BIOS beep sound for ASCII character 7
- Return failure for INT 13 format calls if the
drive is inactive.
0.82.20
- Dynamic core IMUL instruction mistake fixed,
signed multiply works properly again.
- PC-98 graphics emulation fixed to render only the
number of active display lines programmed into
the GDC instead of matching the text layer. This
fixes the status bar at the bottom of the screen
in "First Queen" and "First Queen II".
- Normal CPU core fixed not to immediately process
interrupts on STI but to wait a little bit so that
a STI + CLI sequence does not cause interrupt
processing, according to real Intel 486 behavior.
- Unknown interrupts in PC-98 mode are now routed by
the DOS kernel through it's segment (60h) and back
to the BIOS through a JMP instruction. It appears
some TSRs for PC-98 determine whether or not
interrupts are in use by whether or not the segment
value is pointing at the DOS kernel (segment 60h).
- Re-added a20=fast by popular demand, though a20=mask
is still the default. a20=fast emulates the A20 gate
the way a virtual 8086 mode monitor does where only
the first 64KB past 1MB is remapped rather than
gating bit 20 of all addresses. Note that a20=fast
also matches the A20 gate behavior in DOSBox SVN.
- Bringing up the SDL drawn menus and then resizing the
window no longer "freezes" the display in SDL2 builds.
- IDE emulation now minimally emulates PC-98 I/O port
arrangement in PC-98 mode.
- Running a build that draws its own menus, setting
output=opengl, and hiding the menus no longer causes
lag redrawing the screen every time the mouse cursor
moves.
- Memory limit is now 3.5GB for 64-bit builds and 1GB for
32-bit builds.
- Maximum memory limit is now 3.5GB, code fixed to better
enforce the limit.
- Mixer and VGA capture code fixed to signal error if the
memory address exceeds the amount of system memory.
The general design of DOSBox-X memory I/O means that if
physical memory writes are made beyond system memory,
DOSBox-X will write out of bounds and segfault.
- DOSBox Integration device now offers the program inside
to capture the VGA output, for automated testing.
- DOSBox Integration device now offers reading emulator
time (PIC_FullIndex()) and setting a watchdog timer
that triggers an NMI unless reset. Intended for use
with automated testing.
- Debugger INTHAND command now works properly in protected
mode.
- DOSBox Integration Device now provides an interface for
code within to listen to the mixer output (to hear
itself) for automated testing purposes.
- Gravis Ultrasound emulation fixed not to run or compute
voices and ramps if the DAC enable bit is not set.
- Gravis Ultrasound emulation now offers a hack to ignore
writes to the Active Channel register if the DAC is active
and rendering audio (Ice Fever demoscene hack).
- SDL drawn menus fixed not to interact or draw while 3Dfx
emulation is using OpenGL, to prevent it from disturbing
the OpenGL context for 3Dfx emulation.
- NMI interrupt handling fixes to resolve instruction pointer
corruption if NMI interrupt triggered while a CPU core is
executing instructions (i.e. triggered by I/O handler).
- DOSBox-X integration device now provides an interface to
trigger IRQ and NMI signals.
- Integrated commits from mainline (Allofich)
- Improve disk image mounting: cycle disks only for the
drive being mounted.
- FAT drive fixes and improvements. Identify floppy format,
and support filesystems that use only part of the disk.
Fixes Make Your Own Murder Party and Music/Pinball
Construction Set.
- Return correct error code for verify sectors function
when an invalid drive is specified. Fixes Hugo Troll game
installers.
- Prefer ncurses above curses (on some systems, these are
still different packages)
- Give a warning at startup if dpi scaling is detected.
- Show segment override on XLAT instruction.
- Change scan3x to be LINE LINE DARK instead of LINE DARK
DARK. This matches pictures of scanlines better and doubles
the brightness as the old implementation was rather dark.
- Make it possible to compile without PNG support.
- Report when a -conf file can not be loaded.
- When searching CD-ROM directory entries, strip trailing
period of extension-less filenames after stripping file
version number and separator. Fixes disc check in Air Power.
- Add Unit Number and Bytes Per Sector fields for DPB
entries. Fixes Air Power installer and Windows 3 Virtual
Memory dialog.
- Reset write ops after drawing text in EGA graphics modes,
consistent with EGA/VGA BIOS. Fixes Fun School 3.
- Make Allocation Info work for CD-ROM drives. Fixes Bureau
13 installer.
- Prevent double-loading of CD-ROM images.
- Don't generate sound after DMA is masked at end of single
cycle transfer. Prevents issues with some games.
- Use right field when dealing with joysticks.
- Check for both read-only modes when writing files to drive
- Correct one-off error in paging table size compare for
when not using USE_FULL_TLB
- Make CMOS equipment list startup display mode bits differ
from BIOS on EGA/VGA. Fixes Sauro.
- Implement port 62h with timer 2 output for CGA and
Hercules machine types; fixes Frank Bruno's Boxing and Math
Maze.
- Acknowledge mouse interrupt before entering user routine;
fixes sound stutter during mouse movement in Eye of the
Beholder III and Casino Tournament of Champions. Clear
button counters in the mouse driver reset function;
prevents unintended skipping of intro in MechWarrior and
others.
- Correct relative track length in subchannel data for
CD-ROM images; fixes speech audio cutting off too soon in
Casino Tournament of Champions.
- Reset followed by switch to UART mode should take some
time; fixes MPU detection in F29 Retaliator and Hover Force.
- Ignore unrequested data in intelligent mode; fixes Roland
sound in Krusty's Fun House.
- Repair double slash in configfile location on Macs. Add
some protection against a NULL dirp.
- Fix loading of configfiles specified with -conf but
present in the userdir with -userconf present.
- Fix up DOS_Drive_Cache::GetShortName.
- Change multi-remain to repeat last parsed value for
non-string types if the next value is empty and of the same
type as the last. Use this to add an optional parameter to
sensitivity which controls the y axis. When optional
parameter is missing, x and y axis have the same value.
Change limits on sensitivity to allow for negative values
so the Mouse Y-axis can be inversed.
- Correct bug related to signedness.
- Improve prefetch and simple cores to not switch to normal
core on trap execution. Fixes the demo version of
Prehistorik 2 and similar cases that use the trap flag and
prefetch tricks.
- Check lengths before adding C-style strings together.
- Fix unmounting of complex drives where parts were left and
file pointers were kept open.
- Stop storing raw modrm value. Should save an instruction
on each get_modrm call.
- Strip leading = from value. Can happen if you execute
"irq =5".
- Don't remove bytes from autoexec.bat when changing
settings from autoexec.bat, but replace them instead. This
way the location stays valid.
- Let dynamic core recompile interrupt instructions in
non-debug builds. Can help software with many INTs, such as
compiled BASIC, run faster.
- Add logic in mouse driver to ignore button events that
are out of sequence. Fixes International Rugby Challenge
when clicking to lock the mouse.
- Use a more compatible offset for DOS redirected interrupt
vector. Works around a null pointer bug in the notes dropdown
list of Jack the Ripper.
- Rewrite pop_ev so it can trigger pagefaults again. Fixes
Win 3.11.
- Fix uninitialized access to some isoDrive fields. Pause audio
before switching. Use right subunit with multiple CDs on one
drive letter.
- Move all stack alignment operations into one place and
some optimalisations to RISC x64 dynamic core.
- Merged in MAME sound from mainline, except for Tandy sound.
0.82.19
- Prefetch core fixed up, made more aggressive, and string
instructions (REP MOVSW) cause more prefetch. "Stereotype"
demoscene production can run again.
- DOSBox Integration device now allows ISA DMA read/write
injection.
- 8237 DMA emulation now supports PC-98 "auto bank increment"
functions, which automatically increments the DMA page number
on DMA wraparound. Sim City 2000 needs this to play it's
digitized sound effects properly.
- 8237 DMA emulation now enforces read/write mode provided by
guest. If the DMA is configured for reading from system
memory, then attempts to WRITE to memory via DMA must fail.
Just like real hardware.
- 8237 DMA block transfer cleanup, de-duplication.
- 8237 DMA block cleanup allows implementation of 8/16-bit DMA,
forwards and backwards.
- PC-98 keyboard corrections (not yet verified to be accurate
to hardware though) to solve problems where holding a key
while running a program that is slow to respond to input
can overrun the buffer and fail to handle additional input.
- VGA BIOS size changed to 0x4000 (16KB), because 0x3800
is not liked by Windows 3.0.
- Font vector is now INT 44h for PCjr and Tandy emulation,
INT 43h otherwise as documented in the RBIL.
- Graph key (PC-98 mode) no longer registers as keyboard
input to INT 18h. EDIT.COM's menu is now usable.
- PC-98 INT 18h AH=02h fixed to return the correct keyboard
status byte as documented
- Local directory filesystem support now applies timestamp
before closing the file handle, which should help with
timestamps even if the filename is not directly valid
on the host operating system or filesystem.
- DOSBox Integration Device moved to I/O port DB28h-DB2Bh
in PC-98 mode to avoid conflicts with DMA controller
registers.
- DMA controller is now completely disabled in IBM PCjr mode
(machine=pcjr) to match real hardware.
- COPY command now copies file date/time as well.
- INT 2Fh AX=1600h no longer logs an error as unimplemented.
(Allofich)
- COPY.EXE removed, so that the built-in COPY command can work.
- PC98UTIL fixed to re-enable the text layer after the BIOS call
for /24khz and /31khz options.
- PC-98 INT 18h AH=30h now allows setting the 480-line mode.
- (PC-98) Port 6Ah command 40h/41h, CRT vs Plasma/LCD mode,
added.
- PC98UTIL.COM now updates the menu item for PC-98 GDC clock
speed when changing GDC clock speed.
- Added to PC98UTIL.COM the /24khz and /31khz switches to change
hsync rate.
- Updated PC-98 graphics plane emulation to more properly
handle the 5MHz GDC mode, and the IM bit in the GDC parameter
RAM.
- INT 18h AH=30h and AH=42h mode set fixed to update CPU and
display pages correctly.
- INT 18h AH=30h (PC-98 mode) now permits graphics layer changes.
- INT 18h AH=30h (PC-98 mode) now permits changing hsync rate.
- INT 18h AH=31h (PC-98 mode) now uses BIOS data area to
return hsync rate (24KHz vs 31KHz)
- INT 18h AH=42h (PC-98 mode) now uses BIOS data area to
determine 5MHz GDC instead of internal state to better emulate
actual hardware behavior.
- PC-98 text console output now fills both cells of doublewide
characters on the text layer.
- PC-98 port 6Ah now handles command 82h/83h and 84h/85h which
allow the guest to reprogram the GDC clock frequency (2.5MHz
or 5MHz). This is necessary to handle strange Windows 3.1
behavior where entering a DOS program fullscreen causes
Windows 3.1 to reprogram your GDC to run at 5MHz regardless of
the BIOS (or dosbox.conf) setting.
- PC-98 port 68h now supports command 0Eh/0Fh to enable display.
- Integrated commits from mainline (Allofich)
- Lower the influence of the aspect table correction
trick when using high scale factors (320x200 => 2000x1200).
- Correction done to Hercules video height parameter.
- The mapper now uses the wrapper as well
- Fix the possible/suggested values for integer
properties.
- Do less to update the frequency of an active SB
DMA transfer. Fixes sound in Tempest 2000.
- Add missing --disable-fpu-x64 option
- Use clock_gettime when available instead of the
obsolete ftime.
- Allow CRTC read/write access on all mirror ports for
non-VGA machine types. Fixes Tandy and EGA display in
International Hockey booter.
- Handle "copy H*.txt file.txt" correctly
- Fix detection of always_inline attribute with MinGW 4.9.2
- Introduce mount -pr to mount paths relative to last
loaded configuration file.
- Use normal teletype function for non-ANSI output so the
default attribute 7 applies only to graphics modes and
existing attributes are not changed in text modes.
- Improve compatibility of internal mouse driver with
respect to video mode changes and hiding the pointer, and
handle font reloading as a kind of mode change. Also fix
unlocked mouse pointer to recognize the full range of
tweaked/fontloaded text modes.
- Bring OS2 port up to date.
- Ignore/remove single % in batchfiles.
(Fixes B13Demo batchfiles on PC Gamer cover disc 1995-08)
- Clear incomplete Sound Blaster DSP command at reset,
fixes Romancing Prince.
- Add some more cases to the Alt-Tab detection.
- Add alternate font tables and associated loading logic
in video BIOS, allowing correct gaps between "wide"
characters (e.g. m,w,M,W,T,Z,0) in all VGA machine types.
- Update all related BIOS memory values and CRTC registers
when loading fonts.
- Improve support for MDA emulation in the vgaonly machine
type, as it is the only way the video BIOS can make use
of the 14-line alternate symbols.
- Be compatible by setting the INT 43h vector to the first
half of the 8-line font table for standard text modes.
- Move VESA mode table and OEM string before font tables
in the video ROM, which is a more compatible ordering.
- Add opl3gold option to oplmode setting. With this option
the Adlib Gold music can be selected in Dune. Only music
without effects is supported. FM volume control does work.
- Add hardware text mode cursor support.
- Rework FCB_ParseName
-- Remove special code for . and .. as it was wrong
-- Continue reading the input string, when the max length
of the field has been reached (123456789.12345 is read and
returned as 12345678.123)
-- Strip spaces before and after reading the separators.
-- The drive is always parsed (if present), it doesn't
depend on the existence of said drive.
-- Fix parsing of .EXE and other extension only names
-- Always clear out current block and record size.
- Correct AX and BX, they contain information on the
existence of the drives specified in the FCBs in the
execute block
- Rework the parsing of arguments into the FCBs
- Use full mask; fixes label search on FAT drives.
- Don't write past the terminator in the DTA name field
when setting search results. This is what DOS does, and
writing junk after the terminator was not good in any case.
Fixes file listing in the 16-bit version of Galaxy Player.
- Improve rename support for when renaming files (in a
folder) on a drive different from the current one.
- Improve internal ANSI support to adapt to currently
displayed columns and rows. Fixes original Infocom
interpreters when using something other than 80x25.
- Handle double-quoted values and quoted values in
dosbox.conf files.
- Speed up GetHexValue.
- Restore 1,2,3,4,5 as run 5,500,1000,5000,10000
instructions.
- Change BIOS equipment list to indicate DMA not
supported on PCjr machine type, which fixes PCjr
detection in old versions of Ancient Art of War.
- Correct some offsets in the DTA for FCB-based search
results. Fixes DIR listing in COMMAND.COM from MS-DOS
and file info in XTree Gold.
- Prevent a multiplication overflow and more accuracy
by using floats for attack rate loop
- Set record size to 128 if it is 0 in the FCB when
calling any FCB read/write function
- Fixes for acad 10:
- Add missing reference counting when the file is
already open when calling FCB_Open, so that acad, which
uses FCBs and normal handles on the same file, works
better.
- Remove FCBs being added to the PSP filetable and
rewrite most functions to support this change. This way
acad won't run out of temporary (fcb) files when low on
memory.
- More flexible setting of version with "VER" command.
- Fix screen clearing when setting mode 0xA on PCjr
machine type.
- Fill DTA for FCB search results more like real DOS,
fixing hang in SETUP.EXE and MSDOSD.EXE from Windows V1.01.
- Add support for mode 8 row copy/fill. Fixes Tandy
GW-BASIC interpreter SCREEN 3 scrolling/clearing.
- Map inactive video memory regions as empty rather than
filled with RAM. Fixes later version of Sargon 3 on color
machine types.
Set color modes (to the extent that they can be) on the
Hercules machine type if the BIOS equipment list is not set
to monochrome. Fixes missing text in Victory Road.
- Graphics mode text drawing improvements:
-Font source according to machine type.
-Use compatible method of determining fill attribute for
textmode screen scrolling in teletype function.
- Prevent DOS buffered input function from hanging in an
infinite loop when redirected input reads a linefeed or
reaches EOF.
- EXEC improvements, mostly for the load-but-do-not-execute
function.
- Stop writing uninitialized junk into first shell's command
tail at startup.
- Support writing palette register data to dynamic save area
if pointer is non-zero on mode changes. Fixes CV 2.2.
- Be more compatible by converting tabs to spaces in the DOS
console device rather than in the video BIOS teletype function.
- Make the internal program for loading ROM images a bit
smarter about what it can/will load. Also provide for BASIC
in ROM to support IBM BASIC interpreters.
- Correct page count/size for CGA graphics modes. Fixes RS-2
on the CGA machine type.
- Raise lower limit of cycles in autodetermine mode to
improve stability.
- Fix for 256 color encoding in zmbv.dll codec
- Rework ListMidi so it can be more easily added to more
backends.
- Implement mixer /listmidi for coremidi.
- Increase size of SysEx buffer to support Sierra's Yamaha
FB-01 driver.
- Add improved breakpoint handling to the debugger
- Rewrite the order of the debug help list so the keys come
last
- Clip to boundaries when there are no suggested values for
Prop_int
- Implement an obscure behavior of the VGA DAC. Fixes wrong
colors in Planet Soccer/Football.
- Use default attribute behavior of ANSI.SYS in the console
device. Fixes scrolling issues. Anything that wants non-ANSI
behavior may not display as intended with the internal DOS,
same as real DOS when ANSI.SYS is loaded.
- Lower default adlib volume with 2.5dB, based on
measurements
- Add experimental name support to configmidi for coremidi
- Add support for selectig midi devices by name to win32
midi
- Make IRQ generation in Write_MCR consistent with
ComputeInterrupts when op2 changes.
- Update mixer volume calculations for the SBPRO 1 and 2 and
the SB16, based on measurements.
- Repair a logic error in cycle max calculation
- Introduce a random sleep period, which activates after 3
short sleeps in one frame.
- Adjustments to cycle ratio computation.
- Process repeated reset commands without delay. Fixes MPU
detection in several games. Correct ACK for reset: entirely
absent with dumb setting (mpu401=uart), and also absent when
returning to intelligent mode from UART mode.
- Allow for direct changing of 4op chaining without having
to rewrite the algorithm mode.
- Enable core inlining by default on configure/make build
system
- Limit amount of polls per second a bit on MAC OS X, as it
was quite high otherwise.
- Add basic support for INT 13 call 15. Used by Korean
Powerdolls to detect harddrive.
- Add ALSA MIDI 0xA0 and improve unhandled message
reporting a bit.
- Support rarely used FCB feature: open file with search
mask. Fixes Buckaroo Banzai.
- ANSI emulation is activated for the session when an
escape sequence is encountered other than those used by
internal messages. Fixes LucasArts setup programs provided
that ANSI emulation is not activated.
- Flag handling for normal core: zero and sign flags for
integer multiply instructions.
- Strip spaces properly.
- Improve disk serial number DOS functions.
- Only add return to buffer if it already contains data,
which fixes extra return in generated autoexec.bat.
- Lock default label of HDD local drive mounts. Fixeslabel
changing to the host drive label when resetting cache on
the Windows platform.
- Fix echo off being written twice. Attempt to make the
line endings in the generated autoexec.bat all DOS-style.
- Take length in consideration before moving the echo off
upwards.
- Fix ExpandDot not caring about the size of the buffer.
(vogons topic 59658)
- Be less specific about the jump instruction when
identifying a video BIOS.
- Return an error for generic block device request on
unmounted floppy drives.
- No Sound Blaster IRQ generating when masking the IRQ
channel.
- Improvements for IOCTL generic block device request
- Make Media ID table relative to DPB table. Fixes
Hattrick by Ikarion.
- Support some installer disk detection methods: block
device count, and specific MBR/boot sector contents.
Fixes (original) SimCity, Amberstar, and later MicroProse
installers.
- Fix GetLabel() for the virtual drive.
- Integrated a commit from mainline:
#3860 "Use PCJr specific method to clear the video RAM.
Also don't scroll at unspecified video page.
Fixes issues with KQ1 and KQ2."
- PEGC emulation will now print a warning if the guest
application or OS attempts to use 256-color planar mode.
- PC-98 PEGC 256-color linear framebuffer is not mapped by
default anymore, except when 256-color mode and the enable
bit set, to match real hardware.
- PC-98 PEGC 256-color emulation fixed not to respond to
MMIO registers related to 256-color planar mode according
to real hardware behavior. 256-color planar mode support
is planned in the future.
- Remove old dynamic x86 core. Dynamic core is exclusively
dynrec now.
0.82.18
- Added debugger command "VGA CRTC" for the CRTC section of
VGA emulation.
- Added debugger command "VGA DAC" for the DAC and "VGA DACPAL"
command to view the VGA color palette.
- Added debugger command "VGA GC" for the graphics controller
section of VGA emulation.
- Added debugger command "VGA SEQ" for the sequencer section
of VGA emulation.
- Added debugger commands "VGA DRAW" and "VGA AC" to view
drawing and attribute controller state in the VGA emulation.
- Integrated commits from mainline (Allofich)
- CD audio status now returns zero start and end times
when no track is playing. Fixes "The Manhole".
- Add "ADDLOG" debug command to manually add a message
to the log.
- "Strip off leading zeroes from the IP", a fix for
the serial modem.
- Add a small delay when raising the Sound Blaster
8-bit IRQ to emulate the slowness of the DSP, fixes
Llamatron 2012 and Lemmings 3D.
- Add ability to set debugger breakpoint on AL values.
- The SB DMA callback now ignores previously selected,
but not currently selected, DMA channels. Fixes Visual
Player 2 with SB16.
- Minor cleanup to joystick code.
- PSG noise channel emulation (PC-98 FM board) apparently
broke on Mac OS X due to type promotion by Clang/LLVM.
Modified the code to behave as originally intended, to
restore the PSG noise channel on Mac OS X.
- Added debugger command "DOS FNKEY" to view PC-98 scan code
escape mapping.
- PC-98 EGC ROP 9Ch added, apparently used by Windows 3.1
CALC.EXE
- PC-98 INT DCh CL=0Ch/CL=0Dh AX=01h through AX=28h added,
which allows individual function/edit keys to be read or
modified.
- Dynrec dynamic core is now default even on 32-bit builds.
Dynx86 dynamic core is still an option at this time if you
compile from source.
- PC-98 INT DCh CL=0Fh AX=0h/1h added.
- PC-98 INT DCh CL=0Ch/CL=0Dh added AX=0 handling as well.
- PC-98 INT DCh emulation now support INT DCh CL=0Ch/CL=0Dh
AX=FFh so that some programs (including SEDIT.EXE) can set,
re-define, and restore the function key row.
- PC-98 MS-DOS emulation now injects escape codes from a table
for the function keys instead of hard-coded as it does on
real MS-DOS.
- PC-98 MS-DOS emulation now supports Shift+Fn (shift+Function)
to inject shortcuts into the CON device.
- PC-98 MS-DOS now accepts CTRL+F8 to clear the screen.
- PC-98 MS-DOS function key row now accepts CTRL+F7 to toggle
between none, function keys, and shortcuts.
- PC-98 INT 18h AH=42h display area setup now cancels pending
vsync interrupt. This fixes display issues with Quarth when
interrupting the game's demo mode to enter the main menu.
- PC-98 emulation now emulates port 6Ah command that controls
128KB/256KB VRAM wraparound.
- INT DCh CL=10h AH=04h through AH=09h added.
- INT DCh CL=10h AH=03h call to set cursor position (backdoor for
ESC = ANSI code) added.
- Added parsing for ESC M / ESC D and ESC E in the DOS ANSI driver.
- New debugger "VGA" command added to view additional emulator
state.
- Debugger input bar (at the bottom) fixed to position correctly,
mistake in the code that caused it fixed.
- PC98 debugger command now supports viewing text, graphics, CG,
GRCG, and EGC state.
- New debugger command "PC98" to view PC-98 emulation state in
the debugger.
- New debugger command "EMU" added to view additional emulator
state.
- Debugger data view now shows linear and physical memory address
for the memory address you're viewing when the CPU is in
protected mode. The physical memory address display is useful
when 386 paging is enabled.
- Debugger command "SM" now accept B: W: and D: prefixes to
write BYTE, WORD, and DWORD values to memory.
- Debugger command "SR" now accept multiple pairs of registers
and values in one command.
- Debugger commands "EV" and "SM" will no longer hang DOSBox-X
on invalid (unrecognized) input.
- Added "EV" debugger command to allow viewing CPU registers
at the command line, including CPU registers not shown
in one of the windows of the debugger UI.
- Debugger will now explicitly tell you if it does not
recognize the command.
- Debugger fixed not to leave your command uppercased on the
command line if it does not recognize it.
- Debugger "SR" command updated to allow setting upper/lower
halves of AX/BX/CX/DX, additional CPU flags and the whole
flags register.
- Added INP/OUTP commands to debugger to aid debugging
I/O ports.
- 8086 and 286 cores now emulate a known bug where an
instruction with multiple prefixes that is interrupted
will resume at only the most recent prefix.
- PC-98 planar emulation optimized and cleaned up.
- Configuration GUI no longer crashes at startup if run
from the command line using the --startui or --startgui
command line options.
- Configuration GUI fixed not to allow multiple instances
of the same settings window.
- Emulator speed controls added, if for any reason you'd
want to play a game faster or slower.
- Configuration GUI AUTOEXEC editor fixed so that
"Append History" button actually works.
- Fixed configuration GUI to show keyboard options instead
of the mapper interface when you click the "Keyboard"
button.
- "Show details" menu option now also enables the realtime
percentage display.
- Mac OS X builds fixed to use older convertRectToScreen
function instead of convertPointToScreen, which allows
others to compile DOSBox-X on Mac OS X versions older than
Mojave (despite Apple documentation claiming that
convertPointToScreen was added in 10.12).
- Shift and Alt key modifier handling within the configuration
GUI now works properly in SDL2 builds.
- Fixed prefetch queue emulation to allow 8086, 80186, and
286 CPU types to run with prefetch queue without crashing.
- CPU type selection menu will now cause guest to reboot
if new cpu type is incompatible with the BIOS prologue
and epilogue code that was generated at startup, to
avoid crashes.
- PC-98 NEC copyright string option now also installs
another set of data in another location in the BIOS,
that Windows 2.1 checks for.
- Minimum MCB free value now has a higher default value in
PC-98 mode to reflect the fact the platform usually has
more loaded into lower memory at runtime. You are allowed
to specify a lower value in dosbox.conf for anything that
needs more memory.
- GUS and Sound Blaster environment variable installation
is now quiet, does not echo the variable on screen at
startup.
- INT 21h country-specific info now returns correct info
for PC-98 mode.
- INT 21h DBCS lead table now contains correct values in
PC-98 mode.
- Added more PC-98 EGC raster opcode emulation. The PC-98
version of Windows 3.1 now displays properly without
issues, except for line drawing.
- Added INT 10h VESA BIOS function AH=08h "SET DAC WIDTH"
so that, when enabled, DOS applications can switch the
DAC from 6-bit to 8-bit.
- Added basic 256-color mode emulation to PC-98 mode.
Linear framebuffer, needed by PC-98 ports of DOOM and
Wolfenstein 3D, is implemented. Bank switching, needed
by a few PC-98 games, is implemented.
- MPU-401 emulation now accepts dosbox.conf option "mpubase"
to control the base I/O port of the MPU-401 interface.
The option can be set to "0" to tell DOSBox-X to pick the
best default. Works in either IBM PC or NEC PC-98 mode.
See dosbox-x.reference.conf for more details.
- Fixed Sound Blaster 16 mixer IRQ/DMA select registers
to work in PC-98 mode as they apparently do on real
hardware.
- Sound Blaster 16 and Adlib emulation now available in
NEC PC-98 mode. I/O port mapping is based on a real
SB16 card for PC-98 and some documentation. Only OPL3
emulation is supported for Adlib. sbtype must be set
to sb16.
- NEC PC-98 emulation mode now emulates DMA controller.
- Gravis Ultrasound emulation now allows game to read back
the channel's Pan Pot register.
- Sound Blaster 16 now implements 0xF9/0xFA fully, even if
the RAM contents they expose are not fully implemented.
- Sound Blaster DSP command E2h (DMA identification/test)
code cleaned up and simplified.
0.82.17
- Fixed yellowish tint of tv3x scaler on SDL1 builds of
Mac OS X.
- Fixed hq2x/hq3x and the various sai render scalers to
render correctly on SDL1 builds of Mac OS X (where the
odd BGRA color order is used). Prior to this fix the
scaler output had a very strong yellow tint (missing
or misrendered blue channel).
- Fixed basic scaler template code to render correct RGBA
colors in SDL1 builds for Mac OS X.
- New grayscale scaler option, to emulate monochrome VGA
monitors (frank-deng)
- Menu handling cleanup from within Pause loop, including
Mac OS X menu problems when invoking pause from the
menu bar.
- Shell welcome text fixed to show consistent first line in
both IBM PC and PC-98 mode.
- Pause mode fixed to handle mouse input while paused, so that
SDL drawn menus (on Linux or HX DOS) continue to work while
paused.
- Added dosbox.conf option (off by default) to add the
NEC PC-98 copyright string at E800:0DD8 for games and
applications that require it.
- Debugger can now show guest MS-DOS kernel MCB chain if you
boot an MS-DOS floppy or hard disk image using
BOOT --boothax msdos. For use with MS-DOS 3.3 or higher
including the real mode MS-DOS environment of Windows 95.
WARNING: Use boothax msdos ONLY with real mode MS-DOS, do
not use with the protected mode environment (desktop) of
Windows 95 especially a DOS VM within Windows. Use with
MS-DOS and a DOS extender (DOS4GW, etc) should be OK.
- Added "--boothax <mode>" option to BOOT command. At this
time <mode> is limited to "msdos" to instruct the emulation
to intercept specific INT 21h calls to locate the MS-DOS
kernel's List of List and MCB chain structures for use with
the debugger.
- "TV" scaler updated to render dimmer alternate scanlines
in CGA graphics modes (frank-deng)
- Direct3D output no longer leaves DOS screen frozen when
Direct3D device is "lost" (such as hitting CTRL+ALT+DEL
to bring up the Windows C+A+D screen).
- Page fault handling on by default now for dynamic core,
DOS games and Windows 3.1 seem to handle it OK.
- Page fault handling no longer use non-recursive page fault
method with dynamic core, no matter what. It's too unreliable.
- PC-98 mode now switches PIT Timer 2 clock gate ON by default
to satisfy delay loops in Sunsoft "Photo Genic" and allow it
to run. Note that PIT Timer 2 drives the baud rate clock of
the RS-232C port.
- IDE emulation bug fixed that prevented BIOS to IDE
geometry translation when BIOS head count == 255. This
fix also allows Windows 95 to use its IDE driver with
>= 4GB hard drives instead of running in MS-DOS compatibility
mode.
- Disk image support fixed to allow 4GB or larger hard disk
images to work again.
- FPU x86 core no longer calls E_Exit if the FPU stack
overflows or underflows.
- Updated build-debug scripts to accept "32" on the command
line as a sign to compile 32-bit (i686) on a 64-bit (x86_64)
system. You will need a multilib-capable GCC and 32-bit
libraries installed on your system for this to work.
- SDL2 OpenGL fixed color order issue
- OpenGL is now supported in SDL2 builds.
- Changed MPU-401 reset duration (DOSBox SVN).
0.82.16
- SDL1 support fixed to gracefully handle a case where,
under Windows XP, with an audio device that is not cycling
any audio DMA, DOSBox-X can hang on shutdown.
- SDL drawn menus now shift and adjust popup menu position
to ensure the popup is entirely within the screen in cases
where the window is too small. Redraw issues related to
that (overlapping item and popup menus) have been fixed.
Minimum window resolution has been reduced to 500x300,
enough to permit EGA 640x350 displays without a black
border.
- Fixed INT 18h AH=13h not to automatically show the cursor
(PC-98 fix), which fixes the visible blinking cursor
problem during games.
- VS2017 project files can now compile DOSBox-X to run on
ARM versions of Windows RT (driver1998)
- Local filesystem support fixed to sanitize DOS dates
before applying them to files on the host filesystem
so that invalid dates within DOSBox-X do not make invalid
dates on the host filesystem.
- VS2017 project files can now compile DOSBox-X to run on
ARM64 versions of Windows 10 (driver1998)
- Fixed FAT driver programming mistake (inherited from
DOSBox SVN) that used the Windows 95 "Created" date/time
stamp rather than the original MS-DOS "Modified" date/time
stamp field.
- FAT driver now allows setting file date/time properly
on create or INT 21h call to set date/time, and updates
date/time on close after writing the file. Copy a file
to a disk image should preserve the date, and new files
created on the disk image should no longer have the
date/time stamp Jan 1st, 1980 12:00:00 AM midnight.
- Configuration GUI now allows user to exit dialog boxes
and windows by hitting the ESC key.
- Entering the mapper UI on Mac OS X will now hide all but
the Host Key button on the touch bar. Entering the
Configuration GUI will hide all buttons.
- If DOSBox-X is run on a platform where the GUI provides
a menu resource, bringing up the mapper will replace the
main menu with a mapper-specific menu until you exit the
mapper. Same for the configuration GUI.
- Mapper now allows user to exit by hitting ESC key three
times in a row.
- Windows MinGW builds now properly support and enable the
Direct3D output
- Mac OS X builds now contain the correct version number in
the application plist. Using the Finder's Information window
on the compiled application bundle will now show correct
version information.
- SDL1 builds fixed to always compile with internal SDL_net
library instead of public library on the system
- Mac OS X SDL1 builds fixed to always clip the desktop
dimensions against the available video modes provided
by the system to avoid problems with the 1080i/1080p
modes listed in the System Preferences dialog and older
HDTV LCD TVs with lower than 1920x1080 native resolution.
- "unmask keyboard on int 16 read" option is on by default,
to allow DOSBox-X to keep the keyboard working with
Windows 3.11 Windows for Workgroups.
- Added multi-monitor support and detection for Mac OS X.
- Fixed problem on multi-monitor Linux/X11 setups where going
fullscreen on the primary monitor leaves the non-fullscreen
window sticking out on the adjacent monitor.
- Windows SDL1 builds fixed so that on multi-monitor setups,
going fullscreen will fill the monitor the window is
placed on.
- Added support for multi-monitor and DPI determination for
Microsoft Windows.
- SDL1 and SDL2 builds now examine multi-monitor setups and
so that they can go fullscreen properly on one monitor
instead of going fullscreen across all monitors, in
Linux/X11.
- SDL1 OpenGL code fixed not to leave a blank space at the
top of the screen when going fullscreen (if the menus are
SDL drawn menus).
- SDL1 library modified to center cursor properly no matter
where on the overall desktop the fullscreen window exists.
- Multi-monitor and fullscreen support added for Linux/X11
versions of SDL1 DOSBox-X.
- For non-x86 targets, or x86 targets where the user prefers
not to use the x86 FPU core, code has been added to emulate
the FPU instructions and registers using the "long double"
data type for full 80-bit precision. This fixes 3D glitches
in "Explora" though it still doesn't pass the Intel i387
test program.
- PC-98 INT 18h AH=04h: Added software delay to slow down some
older PC-98 games that poll keyboard/mouse while animating
cutscenes. The games seem to be timed around the assumption
that this call has some delay to it. This fixes problems with
"Shangrlia" by Elf corporation and animation that runs way
too fast.
0.82.15
- Incorporated x86 FPU emulation from DOSBox SVN to improve FPU
precision at least on x86 and x86_64 targets.
- PC-98 port 6Ah fixed not to allow setting EGC enable unless
another EGC enable bit has been set, as specified in the PC-9801
bible.
- SVGA mode 0x10A (text mode) fixed to display properly instead
of only the top half.
- BIOS keyboard handling fixed in PC-98 mode so that Shift+Ro
types an underscore as expected.
- SVGA emulation (Tseng ET4000 and S3) fixed to reflect real
hardware behavior where BYTE/WORD/DWORD VGA bits in the CRTC
are ignored in SVGA modes.
- Added "debug page flip" and "debug retrace poll" options to
the menu.
- Added "Swap Floppy" and "Swap CD" commands to the menu.
- INT 2Eh (MS-DOS command interpreter interrupt) fixed so that
the segment value of the interrupt vector matches the PSP
segment of COMMAND.COM. Some DOS applications rely on that
segment value as a starting point to enumerate the MCB
chain.
- PC speaker emulation fixed not to print "queue overrun"
messages if the game or demo is attempting to use the PC
speaker while pcspeaker=off.
- PC speaker emulation fixed to improve accuracy and to ensure
the square wave is synchronized to the 8254 PIT output.
This change appears to have improved sound quality with
PWM "digitized speech" output.
- 8254 emulation fixed to improve overall accuracy
- 8254 PIT timer emulation fixed not to report writes to PIT 0
Timer counters if the game is writing the same value
repeatedly.
- 8254 PIT timer connected to PC speaker now handles new counter
value without causing full reset of the square wave (mode 3),
which allows DOSBox-X to pass all tests in DOSLIB.
- Added dosbox.conf option to control bus speed (and therefore
I/O delay) of the C-BUS in PC-98 mode. Added defaults
appropriate to PC-98 mode according to bus speeds documented
for PC-98.
- Timer clock gate emulation fixed to work properly in PC-98
mode as well as IBM PC mode, when the PC speaker clock is
enabled or disabled. This includes resetting the counter
on the 8254 when the clock gate (trigger pin) is turned off
[DOSLIB test TPCRAPI6.EXE]
- Introductory text now indicates whether the build was
compiled against SDL1 or SDL2 (emendelson)
- Windows SDL1 builds now remember window position even when
entering/leaving fullscreen mode.
- "Restart DOSBox-X" menu and command code removed.
- Linux/X11 window focus fixup. The change in 0.82.14 broke
main window focus handling entirely by forgetting to check
for the "window manager" window handle.
0.82.14
- Windows builds, if run on Windows 7 or higher, will now direct
the task bar preview to show only the part of the window
containing the DOS screen.
- SDL1 Mac OS X builds fixed to remember window position even
if going to or from fullscreen mode.
- Fixed mistakes with SDL2 surface output that caused serious
UI problems with fullscreen mode and fullresolution=original.
- Fixed problems with SDL1 Mac OS X and the window/dock menu
filling up with multiple windows that have long ceased to
exist.
- SDL1 Mac OS X startup code replaced with startup code from
SDL2 in order to run from main() cleanly instead of running
SDL_main from an OS X event callback. This also fixes the
problem of an unresponsive menu on startup if run from the
terminal.
- SDL1 Mac OS X builds fixed not to destroy and recreate the
window every time it is resized.
- SDL1 Mac OS X builds fixed to keep the window position
stable every time you resize or do anything to trigger
window recreation. Resizing the window no longer causes it
to re-center to your screen.
- SDL initialization fixed not to bail out on startup if
DOSBox-X is unable to initialize SDL1 CD-ROM support (ccawley2011)
- Segfault fixed (NULL pointer de-reference) that
occurs when running DOSBox SVN on anything older than
Mojave. DOSBox-X was not affected but the fix was applied
just the same because the possibility is there.
- Configuration GUI fixed to fade out with the right color
RGBA order on Mac OS X.
- Mac OS X SDL1 builds fixed to ignore mouse movement that
occurs outside the window, unless any buttons are held
down.
- Mac OS X RGBA color order error with output=opengl fixed.
EGA/CGA/MDA/Hercules/etc. modes should display properly
now on OS X with OpenGL output.
- SDL1 builds for Mac OS X now use the full Application
menu generated by SDL1 instead of just an About command.
- SDL1 builds under Mac OS X now support the "touch bar"
on Macbook Pro and offer a few basic shortcuts,
including a few that the touch bar makes much more
inconvenient to use since the function key row is
virtual on the touch bar instead of physical.
- SDL1 builds under Mac OS X now offer a few basic
DOSBox-X shortcuts if you command-click or double-tap
the application icon in the dock.
- Added support for taskbar extensions offered by
Windows 7 and higher that allow DOSBox-X to put
additional buttons in the preview pane that appears
when you hover over DOSBox-X in the taskbar.
- Centos 7 SDL1 builds (Linux X11) can now go fullscreen
properly, instead of making the user input devices
unusable running in an endless loop.
- Windows builds now include Mapper and Configuration GUI
commands in the system menu.
0.82.13
- Mac OS X SDL2 builds now use the native OS X menu
system instead of the "SDL drawn" menus.
- Mac OS X SDL1 builds now default to the OpenGL
output (if compiled with OpenGL support). Under
recent versions of OS X, OpenGL output gives
better performance than surface (CGBitmap) based
display.
- SDL2 builds now have working XBRZ scaler support.
- Mac OS X SDL2 builds updated to completely ignore
touch events, because SDL2 sees the touchpad on
Macbooks as a touchscreen. Prior to this fix, the
DOSBox-X UI was unusable due to mixed input events
from both the touchpad and the mouse input from the
touchpad.
- SDL1 High DPI support for Mac OS X users with Retina
displays.
- SDL1 fix for display problems (blank windows) on Mac
OS X 10.14.x (Mojave).
- Windows builds (compiled with VS2017) now have working
MT32 (Munt) emulation.
- Adjusting CPU cycles with F12 + - / F12 + + (Increment
and Decrement Cycles shortcuts) now updates cpu cycles
property. This fixes a problem where adjusting the cycle
count then changing the CPU core caused DOSBox-X to reset
the cycle count back to the original value.
- Linux/X11 support fixed not to assume XRandR extensions
are present, but to instead ask the X11 server first.
- Simple scaler rendering has altered the RENDER start line
state so that detection of a changed line triggers a block
of rendering without compare within a limited count before
checking again. This means a reduced CPU load with scalers
because it only detects frame changes every line before
changes detected, and then on average every 12th line
when running the scaler code. Hopefully this helps the
Raspberry Pi keep up with DOS gaming better.
- Simple scalers now offer compile-time (not run-time)
option to omit per-pixel compare in scaler and process
the entire scanline instead as a performance adjustment
for slower and embedded systems.
- Video debug menu added. First item is one that blanks the
display to test screen updating.
- Simple scalers (normal 2x-5x and SAI) revised to process
changes and scaler rendering in larger blocks for possible
performance improvement.
- Simple scalers fixed to properly compare all pixels to
detect changes properly, instead of only the first 4-8
pixels.
- EGA/VGA text rendering combined to reduce code copypasta
and reduce bugs.
- VGA 16-color planar modes now obey CRTC byte/word/dword
bits.
0.82.12
- MinGW HX DOS builds fixed to accept mouse input properly
even beyond the 640x480 of the original SDL window
dimensions. HX DOS seems to use the original dimensions
of the window even if the window is maximized, thus the
mouse input issue.
- Configuration GUI fixed not to restore (unmaximize)
the window, it's unnecessary.
- New build scripts for Mac OS X, MinGW, and MinGW HX-DOS,
under build-scripts in the source tree, to help make
DOSBox-X releases more timely and consistent.
- MinGW HX DOS builds now use WS_POPUP style instead
of WS_OVERLAPPED to avoid window caption redraw
glitches when in Windows XP.
- MinGW HX DOS builds fixed to force the SDL window
maximized at all times. Mapper and Configuration GUI
interfaces fixed not to call on Windows to SW_RESTORE
the window, in order to keep it maximized.
- Steel Gun Nyan PIT/Timer hack revised so that polling
the timer does not cause an interrupt storm. This
fixes "God of Thunder" MS-DOS game where entering or
leaving a house causes the Adlib music to play
REALLY FAST during the transition effect.
- Dynrec core ported from DOSBox SVN (Daniel-Trevitz)
- Configuration GUI will pack settings closer together
if the window/screen size is below 800x600.
- Configuration GUI fixed to size dialog boxes as
large as needed to show all options, to allow tabbing
between options, to show a focus rectangle on the
items.
- Configuration GUI top level windows no longer show
inactive title bar whenever you access a menu.
- About dialog in configuration GUI updated to
reflect that this is DOSBox-X in 2018, not
DOSBox in 2014.
- Configuration GUI now works with touchscreens in
SDL2 builds.
- INT 33h fixed to regard cursor as hidden if hidden
for at least 100ms, which fixes host cursor flickering
when running the built-in FreeDOS EDIT.COM program.
- Mouse input and guest pointer integration limited
to send input only if within the display region or
within a 10% border around the display region.
- SDL2 tapping the SDL drawn menu bar (on a touch
screen) no longer triggers mouse click in the
guest application (bugfix).
- SDL2 Linux/X11 hack, added to compensate for bugs
in SDL2 v2.0.5 regarding Linux/X11 touchscreen
events, removed. SDL2 v2.0.9 fixed it.
- Linux/X11 SDL2 builds will now encourage the user
to update the SDL2 library installation if
SDL2 library v2.0.5 is installed.
- Fullscreen mode fixed in SDL2 builds.
- Fixed configuration GUI fade out/in effect after
exiting mapper GUI bug.
- Configuration GUI now available and working in
SDL2 builds as well as SDL1.
- SDL2 builds now have a working "Fit aspect ratio"
option.
- SDL1 fullscreen mode fixed to use either the desktop
size or the desired output size, and fallback to
non-fullscreen on failure, to fix a segfault that
would otherwise happen.
- CONFIG -set sdl showmenu= now changes menu visibility.
- CONFIG -set render scaler= fixed to apply changes
to scaler and force setting, and update menu items,
instead of ignoring it.
- CONFIG -set render aspect= now keeps menu synchronized
with setting.
0.82.11
- SDL GUI fixed to make fade/sepia effect fit the
actual display rectangle instead of filling the
window.
- PC-98 BIOS keyboard handling now returns capitals
for A-Z if SHIFT xor CAPS LOCK is engaged.
- PC-98 BIOS keyboard handling now uses modifier bits
of keyboard bitmap to process scan codes, hackish
IBM PC/AT data area status handling in PC-98 mode
removed.
- PC-98 BIOS keyboard emulation now maps numeric keypad
to produce the correct keyboard input to the console
and games. This fixes games that rely on the numeric
keypad and the DOS console driver
- Command line parsing fixed to add any BAT, COM, and
EXE file references given at DOSBox-X's command line
to the autoexec.bat file run at startup.
- BOOT command bug fixed that made it impossible to
specify both disk images and the --debug and --force
options.
- Debug output fixed to make it easier to break into
the debugger even during a flood of debug output.
- Added dosbox.conf option to enable/disable the
PC-98 bus mouse interface
- PC-98 boot disks with 128 bytes/sector boot sectors
now load 4 sectors instead of 2. Seems to be
required by some games.
- INT 13h read/write functions fixed to refuse the
command if the floppy disk has a sector size too
large for the implementation (such as a PC-98
disk image mounted in IBM PC mode with 1024 bytes
per sector).
- INT 13h AH=2 (read sector) updated to return disk
change error on first read after disk change, to
match real BIOS behavior.
- Floppy emulation now tracks "disk change" signal.
- PIC event handling fixed, IRQ breakpoints now stop
at the beginning of the interrupt handler.
- MPU-401 MIDI default IRQ is now IRQ 6 in PC-98 mode,
to match factory default setting.
- MPU-401 MIDI IRQ masked by default in PC-98.
- PC-98 port BFDB implemented, which allows control
of the mouse interrupt rate.
- Eliminated mouse periodic interrupt hack, the mouse
interrupt on PC-98 is periodic when enabled.
- 256-byte/sector hard disk images fixed to ensure the
proper boot drive identifier is presented for MS-DOS
when booting a hard disk image.
- Added IMGMOUNT -o partidx=N option. N is an integer
value that indicates which partition to mount, counting
up from zero. This allows mounting disk images that
the FAT driver otherwise can't identify which partition
to mount.
- New general -o name=value option for IMGMOUNT, to pass
various options to the FAT driver.
- Update Metal Force mouse hack to become a more general
"fire interrupt on Port C write" with a dosbox.conf
option to enable. This fixes the requirement to move
the mouse constantly for "Amaranth" when enabled.
- Add to cascade interrupt hacks by offering an option
to ignore the "in service" bit of the PIC for the
cascade interrupt, while still tracking it for
the DOS game or interrupt. Handy for PC-98 games
that check the cascade "in service" bit before
acting on the interrupt (IRQ 8-15).
- DOS kernel fixed to limit it's private area and
UMB region to avoid overlapping the PC-98 SOUND
BIOS.
- PC-98 SOUND BIOS dummy stub added for games that
call into it.
- Emulator hanging problem fixed when inputs are
processed while running at a very low cycle count.
- Added PC-98 LIO BIOS list and stub for games that
require it.
- Timer and PIC updated to emulate Mode 3 Square Wave
output through the IRR register. Needed for Steel
Gun Nyan.
- PC-98 INT 18h fixed to reenable and process any
keyboard data waiting when the DOS game or application
calls INT 18h to read keyboard input. This fixes
keyboard problems with Quarth.
- PC-98 FDC BIOS emulation no longer reprograms the
timer interrupt, but uses an alternate hack to
avoid divide by zero fault with Ys II.
- PC-98 GDC command to read back cursor position
added.
- PC-98 DOS CON device emulation now maintains ANSI
attribute byte at 60:11D as documented.
- BOOT now hides hardware cursor when booting a guest
OS in PC-98 mode.
- INT 1Dh vector now points at segment FD80 to satisfy
some games that autodetect PC-98 vs other platforms.
- INT 18h AH=42 implement display "bank" bit for games
that need it.
- PC-98 text scroll region implemented (I/O ports
76h-7Ah even).
- PC-98 CRTC mode set regarding 20/25-line mode fixed
to update line height, text vertical position/height,
and cursor shape.
- PC-98 emulation of text height/vertical position
registers 70h-74h even added.
- PC-98 text hardware cursor fixed to cover both halves
of doublewide characters if cursor positioned on left
half, to match real hardware.
- Fixed music/interrupt slowdown whenever I/O and INT 10h
BIOS emulation is involved.
- PC-98 minimal (non-functional at this time) printer
port emulation added, as well as system configuration
port.
- PC-98 CG memory region fixed to match real hardware
behavior, responding to A4000-A4FFF.
- FAT filesystem driver now supports 2048 bytes per
sector filesystems.
- FAT filesystem driver logical/physical sector matching
fixed to improve flexibility.
- Fixed crash that occurs if you maximize the window
and then adjust scalers to produce output that is
larger than the maximized window.
- INT 33h emulation now offers hiding the host cursor
if the guest has provided an interrupt subroutine
for the mouse driver to call, since it usually means
the DOS game wishes to draw the cursor itself.
- INT 33h emulation now offers hiding the host cursor
if the guest is polling the cursor position, to
better support guest/host integration with DOS games
that draw their own cursor.
- AUX and PS/2 emulation no longer allowed if machine
type is PCjr.
- PS/2 mouse emulation fixed to disable itself if the
slave PIC needed for IRQ 12 is not present.
- INT 33h pointer integration improved to support some
additional DOS games, and to handle DeluxePaint II
enhanced.
- IMGMOUNT now supports NFD disk images.
- DOSBox Integration Device now available for PC-98.
- Added support for T98Next NHD hard disk images.
- Added support for T98Next NFD R1 disk images.
- Fixed crash with VGA BIOS allocation if video memory
allows the full modelist to overflow the available
ROM space.
- SDL2 mapper redraw issue resolved.
- Added dosbox.conf option to determine whether INT 10h
VESA BIOS emulation points at the modelist in ROM or
copies the modelist into the DOS application's info
structure when asked.
0.82.10
- PC-98 INT 1Bh floppy emulation now fakes success for
calls to format track.
- Initial keyboard pause fixed
- PC-98 INT 1Bh floppy disk BIOS call now resets timer
interval per call. This fixes Ys II after disk swap.
- BIOS fixed to put normal "unhandled INT call" handler
for INT 0-7 even in PC-98 mode to avoid confusion
between game crashes and unknown INT calls.
- VFD image support fixed to properly handle disk images
where a sector is marked with fill byte 0xFF and the
data field is 0xFFFFFFFF, which means the sector contents
are all 0xFF.
- DOSBox-X now supports T98 NFD disk images (R0).
- BIOS data area now properly reports a high-resolution
CRT display.
- INT DCh AH=1 CL=10h added, which is apparently a print
string function.
- BIOS data area now reports 188+ user-definable CG slots,
which makes GAJET happy.
- FDI image support fixed to read the header instead of
treating it as a plain disk image with 4096 of junk.
- PC-98 character generator is now accessible through both
I/O ports A1h-A9h and through memory-mapped I/O range
A4000-A401F. This fixes missing text in Eve Burst Error.
- Gravis Ultrasound emulation will no longer log GUS reset
writes in cases where the same value is being written
repeatedly, to reduce log clutter. Some demoscene
productions have music routines that trigger GUS reset
repeatedly without changing the register.
- Added "gus master volume" setting to deal with games or
demoscene productions where the music is too loud and clipping.
- Added "Pause with interrupts". When enabled, the CPU is directed
into a CALLBACK_Idle() loop to halt the game's main
logic while allowing interrupts to run. This is useful
for recording the game or demo's music because most DOS
games/demos run the music and sound effects from interrupt
handlers instead of the main loop.
- Audio/video capture fixed to render audio even if muted,
instead of rendering garbage to the capture file when
audio is muted.
- Experimental Emscripten + Node target (not reliable yet).
- Added option to control how unhandled IRQs are dealt with.
One option, mask_isr, is derived from em-dosbox.
- Code added to read the screen dimensions in Linux/X11,
either through XRandR or through the base X11 API.
- Code added to read and store the dimensions, size, and
DPI (Dots per Inch) of the screen.
- Fixed bug that enabled IBM style APM BIOS in PC-98 mode.
- For PC-98 mode, PIC emulation by default (but controllable
through dosbox.conf) now initializes the PIC at startup to
return the ISR (interrupt in-service) register instead of
the IRR (interrupt request) register. This fixes FM
music problems with Blackbird by Vivian caused by a
programming mistake in the FM interrupt handler.
- PIC emulation now accepts a dosbox.conf option not to mark
the cascade interrupt as in service, for troublesome games.
- VESA BIOS emulation now supports a packed 16-color (4bpp)
mode as seen on a Toshiba Libretto (Chips & Tech) system.
The packed format is different than the normal planar 16-color
SVGA modes seen on most systems.
- INT 33h no longer reports relative mouse motion unless the
user captures the cursor.
- Fixed EGA 16-color display modes (M_EGA) to honor CGA and
Hercules compatible mapping modes (bits 0 and 1 of the
CRTC mode control) and limit memory display to 8KB or 16KB
accordingly. This fixes the mode select screen in the game
"Prehistorik 2".
- Removed Sound Blaster goldplay mode + sample accurate mode
warning, goldplay mode no longer has issues with sample
accurate mode.
- Mixer "sample accurate" mode fixed to work again.
- Windows SDL1 builds fixed to work around Windows SDK-level API
limitation that normally prevents Win32 applications from
fully receiving WM_KEYDOWN events for the left/right shift
keys independently. Left and right shift keys are now fully
usable on Windows builds (i.e. for use with pinball games).
- INSTALL.MD guide and test files (Aybe)
- CONFIG -get now populates %CONFIG% environment variable with
configuration setting (follow DOSBox SVN behavior)
0.82.9
- "Always on top" mode is now available for Mac OS X builds.
- PS/2 mouse emulation fixed not to send relative mouse motion
unless mouse cursor is captured.
- Shell no longer provides MEM.COM if machine=pc98 or cputype=8086.
MEM.COM is not compatible with either case.
- INT 10h emulation will now set the S3 LFB enable bit for VESA
SVGA modes, unless machine=vesa_nolfb was specified.
- VGA emulation revised to report possible known problems with
Windows 3.1 with regard to LFB base address or memalias setting.
- VGA emulation fixed to emit warning if memalias=24, for S3 LFB,
if machine=svga_s3, to inform the user that the configuration is
known to cause the Windows 3.x driver to crash.
- VGA emulation will no longer report S3 linear framebuffer address
unless machine=svga_s3. The LFB address doesn't matter for anything
other than SVGA S3 emulation.
- S3 emulation will now automatically disable PCI VGA emulation if
constraints prevent DOSBox-X from setting a linear framebuffer
address aligned to 32MB (as required for PCI emulation).
- VGA emulation fixed to pick a more appropriate linear framebuffer
(S3) address if memalias is set to a value below 32.
- Added dosbox.conf option "pci vga" to control whether the VGA
emulation appears as a PCI or ISA device.
- ROM BIOS now forces reported RAM down to make room for BIOS
alias at top of memory instead of throwing an E_Exit error.
- Fixed Hercules emulation (and MDA) so that the Hercules palette
is always enforced. This fixes a bug where switching to HGC
graphics mode resulted in monochrome blue/black graphics instead
of the intended white/green/amber color expected.
- Added MDA emulation (machine=mda). It functions like
machine=hercules minus the graphics mode and Hercules-specific
extensions to the base MDA card.
- DOSBox shell no longer accepts dosbox.conf settings as commands
by default, unless enabled in dosbox.conf. Typing "cycles" will
no longer show cycle count. The dosbox.conf setting allows the
user to enable it again i.e. for compatibility with DOSBox SVN.
This is to prevent dosbox.conf settings from polluting the
available commands at the shell and conflicting with shell and
executable names.
- EGA emulation fixed to obey Color Plane Enable register in
16-color planar modes.
- Fixed BIOS model byte to report PS/2 model 30 correctly when
machine=mcga, to allow certain DOS games to detect MCGA that way.
- CGA mode/color select registers are readable on MCGA, fix 3D8-3D9h
to reflect that.
- INT 10h fixed to properly allow/deny AH=10h, AH=11h, and AH=12h calls
according to machine= type instead of mistakes that blocked too many
calls.
- CGA composite mode should not be available when machine=mcga.
- Fixed INT 10h to report MCGA color display if machine=mcga.
- MCGA (IBM PS/2 Multi-Color Graphics Adapter) emulation added.
- bitop C++11 self-test disabled for Microsoft Visual Studio builds.
Microsoft's compiler can't handle them for some reason.
- Added DOSLIB DSXMENU.EXE to the built-in executable list.
DSXMENU.EXE allows DOS CONFIG.SYS style menus to be set up to
run commands based on menu selection.
- PC-98 ANSI emulation fixed to use the number of rows on the screen,
not cursor position, to range-clip ANSI cursor positioning.
- Added code to have DX-CAPTURE wait 3 seconds (or until ENTER/SPACE
is pressed) after the program exits, before stopping capture.
- DOSBox-X menus now allow runtime selection of capture format
(AVI+ZMBV or MPEG-TS H.264). Changing while capturing will stop/start
capture correctly.
- Added switches to DX-CAPTURE to allow specifying audio, multitrack audio,
and video as well.
- DX-CAPTURE shell command added. The command to run is specified
after DX-CAPTURE and DX-CAPTURE will start video capture, run the
program, then stop capture when the program exits.
- VGA/SVGA emulation fixed to enforce 256KB (64KB planar) wraparound
when emulating stock VGA modes (not SVGA/VESA BIOS). Some
demoscene productions rely on the 256KB wraparound when showing
scrolling credits.
- Gravis Ultrasound emulation now uses I/O callout system, with
I/O port handling to emulate ISA bus 10-bit decoding (but with
consideration of GUS MAX 7xx registers) so that GUS I/O ports
are visible every 1000h I/O ports. A demoscene production was
found that relies on an alias of GUS ports at 5xxxh rather than
using the I/O ports directly.
- Mouse emulation no longer sends motion to serial and PC-98 mouse
emulation unless mouse cursor has been captured.
- Mouse emulation fixed to set sensitivity and mickey count even if
int33=false on mouse emulation reset.
- Debugger fixed to paginate commands with a lot of output, including
HELP, PIC, and various commands to dump interrupts and GDT/IDT tables.
- CPU core no longer triggers Double Fault if Divide Overflow
occurs within Divide Overflow. This is needed for bizarre anti-debugger
obfuscated code seen in a demoscene production, where the program
wraps the demo in a mini-filesystem emulated by trapping INT 21h.
- cputype= dosbox.conf setting fixed to allow selecting between
new 486 emulation (cputype=486) and old 486 emulation (cputype=486old).
The "old" 486 core emulates older 486 CPUs that differ significantly
from the newer 486 CPUs that inherited features from the Pentium.
- IRQ hack setting for GUS and Sound Blaster is now a list so that
multiple hacks can be specified, but in a way that is backwards
compatible with existing dosbox.conf files.
- IRQ hack option for Gravis Ultrasound added.
- INT 20h emulation fixed to work with demoscene productions that
call INT 20h in a way that the interrupt frame wraps around the
64KB limit of the stack.
- XMS emulation now has a dosbox.conf setting to control the number
of XMS handles available.
- Added INT 33h option not to round mouse cursor coordinates to text
cell boundaries in text mode. Some demoscene productions were found
that detects mouse movement, but reads initial position from text mode
before switching to graphics.
- Removed IRQ0 error measurement hack, to match DOSBox SVN. This fixes
timing problems with some demoscene productions. The error measurement
hack was apparently added for Microsoft Flight simulator, but has not
been needed since and has been causing timing issues since.
- Fixed INT 10h VGA save state function to program the Attribute Controller
properly so that the screen is not left blank after the call.
- 8042 keyboard emulation now initializes port 60h to 0xAA on hardware
reset and initialization. Some DOS games and demoscene productions
need something with bit 7 set in the register at startup in order not
to act as if a key was immediately pressed.
- Add printer emulation from Daum's branch of DOSBox, add FreeType 2.9.1
to go with it (Alex/AT)
- Add keyboard type setting, for use in future development.
- PCjr emulation fixed to emulate PC/XT style NMI mask at port A0h
rather than emulate the secondary PIC.
- Code of Conduct revised to make it clear that forks/derivatives CAN
have their own Code of Conduct but that it only applies to that fork
or derivative version. No forking DOSBox-X, changing the code of
conduct, and enforcing it on anyone outside your fork.
- CPU normal core fixed to clear ZF flag after MUL when cputype=8086,
which fixes problems with MSD.EXE mis-detecting the CPU as a NEC V20.
- Fixed PCjr emulation not to allow UMB (upper memory blocks) since
that seems to cause stability issues with emulation. Also, PCjr
does not have UMB as far as I know.
- Fixed PCjr not to re-read port 60h from IRQ1 handler.
- Fixed PCjr not to emulate INT 15h keyboard hook.
- PCjr keyboard emulation fixed to trigger NMI and reflect to IRQ1
the way it actually works on IBM PCjr systems, which also fixes
keyboard control issues with the PCjr version of "Pitfall".
- configure.ac now provides an option for compiler optimization (Yksoft1)
- Code of Conduct, initial version, added to source tree
- PC-98 palette save/load state
- CPU, memory, VGA palette and attribute controller save/load state
- DOS SHELL now implements INT 0x2E to allow DOS programs to invoke
shell commands through COMMAND.COM (borrowed from DOSBox SVN).
- Added dosbox.conf option to control the physical memory address of the
S3 SVGA linear framebuffer.
- Save/load state system added, currently very minimal and experimental.
- Appveyor XML added to source tree (Allofich)
- Fixed *most* SDL2 refresh problems.
- Sound Blaster Pro mixer volume fixed to return reserved bits SET rather
than CLEAR. Some demoscene productions detect Sound Blaster Pro by whether
these bits remain set when written. This fix allows them to detect Sound
Blaster Pro as Sound Blaster Pro.
- VGA emulation fixed not to add 2 scanlines twice, which fixes VGA vertical
timing and scanline count and fixes the scroller in "Inconexia".
- Gravis Ultrasound emulation now prints a warning if the game/demo attempts
a DMA transfer while leaving the DMA channel masked.
- Fixed Gravis Ultrasound emulation to mask DRAM peek/poke I/O to the 1MB
offered by the card, which fixes GUS problems with a demoscene production
that has random values in DRAM address bits 23-20.
- Added dosbox.conf option that, if set, lets Gravis Ultrasound emulation
start a DMA transfer if the game/demo is polling the DMA control register
when DMA is unmasked and DMA terminal count has not occurred, which helps
some demoscene productions.
- Added "PIC unmask IRQ" option for Gravis Ultrasound emulation.
- Gravis Ultrasound emulation now has a dosbox.conf setting to initialize
the hardware at startup as if ULTRINIT had been run.
- Added dosbox.conf option for VESA BIOS emulation that, if set, instructs
non-LFB modes to report 64KB windows but map 128KB from the start of
the window, which helps (but does not fully solve) some Demoscene
productions with redraw problems handling non-LFB as if LFB.
- Fixed ET4000 emulation to support the hretrace "wobble" needed for
"Copper"
- VGA DAC/attribute controller behavior updated to reflect actual behavior
as seen on an IBM PS/2 VGA model, as well as almost any SVGA clone.
- VGA DAC behavior unique to Tseng ET4000 implemented when machine=svga_et4000.
256-color mode on the ET4000 seems to map the low 4 bits through the
attribute controller and, if enabled, the upper 4 bits through the
color select register. Note this behavior is REQUIRED for the
"copper" demo to display properly.
- VGA palette, DAC, and attribute controller emulation updated to
reflect actual VGA behavior, including the way that 256-color mode
is mapped through the attribute controller.
- Sierra highcolor DAC can now be enabled for any VGA/SVGA emulation
- Cleanup and reorganization of scaler, aspect ratio handling (Alex/AT)
- MinGW config.h builds fixed to enable Direct3D (Alex/AT)
- Build fixes for SDL1 and Linux and extended functions (JP Cimalando)
- Fixed ALSA MIDI mistake preventing the creation of subscription
ports (JP Cimalando)
- Previous release broke SVGA 16-color planar modes by masking video
memory to 64KB planar boundaries at all times, fixed code to do so
only for non-VESA modes. 1024x768 16-color mode works again.
- Fixed user-defined VESA BIOS modes to validate the required video
memory against the available memory on the emulated SVGA hardware.
- VESA BIOS modelist generation moved into its own function. Modelist
is regenerated upon editing/deletion of modes.
- VESA BIOS modes added as suggested by hail-to-the-ryzen
- VESA BIOS emulation now allows scriptable editing, deletion, and
mode renaming of VESA BIOS modes for use with picky DOS games and
demoscene productions that assume mode numbers.
- Added VESA BIOS mode 0x136 as an alias for 320x200x16bpp mode
- Enhancements to GFX_CaptureMouse and CaptureMouseNotify added
- Fixed scaler change detection to use sizeof(int) properly than assume
a certain byte count
- Fixed undefined sse2_available reference issue in certain builds
0.82.8
- New xBRZ scaler (with bilinear mode) (Alexat)
- Fixed aspect ratio correction to use the ratio given by VGA emulation
instead of assuming 4:3
- output=surface and xBRZ now permit filling the window just like
output=opengl and output=direct3d
- Added critical section around Windows SDL 1.x resize code to solve
the remaining 0.5% probability that resizing the window causes move
and resize to stop working in Windows 10.
- INT 10h AH=10h now ignores AL=3 in PCjr mode.
- Fixed keyboard handler bug in PCjr mode that caused some CPU
register corruption and general crashiness in games.
- Improved shell: (Aybe, Joncampbell123)
- Ctrl+Left and Ctrl+Right permits word-navigation.
- Added emulation of 'Ins' key behavior.
- Num Lock, Caps Lock, Scroll Lock are now synchronized at startup
and when DOSBox-X window gains focus again (Windows). (Aybe)
- Added visual feedback to Hat/D-pad buttons in mapper. (Aybe)
- Added documentation for 'dir' command sorting switches. (Aybe)
- Menu 'Show console' is now checked with '-console' (SDL1). (Aybe)
- Improved joystick support (see README.joystick): (Aybe)
- Added deadzone and response for joystick axes.
- Axes can be remapped for devices with questionable layout.
- User-settable deadzones for joystick bindings in mapper,
mappings like WSAD keys to axes is less frustrating.
- Improved mouse integration (Aybe):
- Now by default DOSBox-X does not emulate mouse movement when the mouse
is not locked. This gives a consistent experience when compared to host OS.
For the old behavior, use [sdl] mouse_emulation=always.
- Added visual or auditive feedback about auto-lock state (Windows).
This feature can be switched off, use [sdl] autolock_feedback=none.
- Added CAPMOUSE program for capturing/releasing mouse from command line. (Aybe)
0.82.7
- Mac OS X builds now honor showmenu=false by leaving the
stock SDL menu in place at startup.
- Default minimum MCB free/base is now 0x100, to sidestep
unknown unstable DOS application behavior when DOS
applications are loaded at around segment 0x800.
This also puts DOSBox-X at parity with the base memory
behavior of DOSBox SVN.
- Add dosbox.conf option to set Sound BIOS enable
bit in non-volatile RAM (PC-98) that tells older
PC-98 games the FM card is present (Yksoft)
- BOOT updated to boot D88 except for 2D format which
is generally used by PC-88 disk images.
- Added D88 disk image support
- CMake files added (Aybe)
- PIC timing updated to use "double" float type for
more precision, but as a typedef for future support
as a compile time option.
- Removed geometry checks from INT 1Bh FDC functions,
to allow non-uniform disks to work.
- MinGW builds now allowed to use Direct3D.
- Direct3D output fixed to use the same texture
coordinate, window fitting, and positioning
logic as OpenGL.
- Update zlib and libpng libraries in-tree.
- Fixed VFD disk image support to correctly signal
failure to detect geometry, to avoid divide by
zero crash with FAT driver.
- showmenu= now taken into consideration whether to
show the menu bar at startup
- Fixed get_item() E_Exit crash if menus asked to
show from dosbox.conf
- SDL drawn menus fixed to integrate with Direct3D
output on Windows.
- PC-98 mode can now boot floppy disk images where the
boot sector is 128 or 256 bytes/sector despite
track 1 and higher having 1024 bytes/sector.
- General codebase cleanup, compiler warning cleanup.
- Enable XInput support on Windows (Aybe)
- Fixed SDL drawn menus to use std::vector properly,
not to hold onto iterators while resizing the vector
and popping things off the top.
- PC-98 INT 1Bh "read id" floppy disk call fixed to
cycle through sector numbers. Some bootable PC-98
games use "MEGDOS" which polls this BIOS call before
attempting to read the disk. If the sector numbers
never cycle, "MEGDOS" will not attempt to read the
disk.
- Fixed bug that prevented some menu options (such as
"aspect ratio") from working if still in the BIOS or
booted into a guest OS.
- PC-98 mode fixed to ignore "mainline compatible mapping".
That mapping mode refers to DOSBox SVN which never
supported PC-98 mode anyway.
- Fix PC-98 INT 1Bh "test read" call, which then allows
"cherry bomb" to run.
- Remove geometry checks in PC-98 INT 1Bh BIOS call, so
that FDD images with odd sector sizes can work.
- ROM BIOS now automatically occupies E8000-FFFFF instead
of F0000-FFFFF when in PC-98 mode.
- Most 128 byte/sector FDD images appear to jump to
E800:0002. I'm guessing that's ROM BASIC, so add a
callback at that location to catch these boot disks
and show a message instead of allowing the boot
sector to jump to nothing and crash.
- PC-98 BOOT fixed to check for and support booting from
FDD images where track 0 contains 128 byte/sector
boot sectors.
- PC-98 INT 1Bh support fixed to support reading/writing
sector sizes other than the one sector size reported
by the image. It is now possible to read the other
sector sizes from an FDD/VFD image.
- Fixed somewhat serious bug that, when compiled against
Microsoft C++, causes the AVI writer to use the 32-bit
lseek() function instead of the 64-bit lseek64() function.
Prior to this fix, AVI captures would begin to corrupt
themselves after growing past 2GB in size.
- Cleanup code, fix compiler warnings, typecast problems,
C/C++ conformance problems as reported by GCC 4.8,
GCC 7.3.0 (MinGW), Visual Studio 2017, and Clang/LLVM
on Mac OS X.
- FM Towns machine type stub, for anyone interested in
forking DOSBox-X to implement FM Towns emulation.
- Code cleanup, refactor, according to compiler warnings.
- SDL drawn menus fixed to copy Direct3D backbuffer to
the SDL surface when popup occurs. This allows the
menus to overlap the Direct3D display correctly.
- Fixed Direct3D output so that when composing the next
frame in the backbuffer, it also copies the SDL drawn
menu from the SDL surface in order to keep it on
screen.
- Direct3D output updated to follow SDL clip rectangle
struct, in the same exact manner as the OpenGL output.
This also permits the Direct3D output to correctly size
itself and leave space at the top for the SDL drawn
menus.
- Fixed dynamic core entry point to push/pop EBP because
debug builds need the compiler to track the stack frame.
- Updated in-tree zlib and libpng libraries to the latest
provided by both projects.
- Fixed VFD (FDD) disk image support to signal to FAT driver
properly an error if it could not determine a geometry.
- Fixed code breakage with SDL2 that prevented compilation
with Munt (MT32) emulation enabled. SDL2 builds now allow
MT32 emulation.
- Mac OS X builds now compile against the in-tree zlib and
libpng libraries for consistency.
- MinGW builds now compile against the MinGW provided zlib
and the in-tree libpng library for consistency.
- Enabled MinGW builds to use Direct3D and Direct3D shaders.
- Added code to auto-detect the VirtualBox display driver
in Windows build, because OpenGL output doesn't work
in Windows XP under VirtualBox. The change will switch
the default output to "surface" if VirtualBox is detected,
else will retain the "opengl" default. This change applies
only to MinGW builds and not HX DOS or main VS2017 builds.
- Added PC-98 INT DCh emulation for function call that
writes a char to the screen, allowing Eve Burst Error
to clear the function row
- Added command line option to allow skipping the 1-second
wait in the BIOS startup screen.
- SDL2 builds now support use of the SDL drawn menu with
a touchscreen device.
- Fixed up SDL2 support code to compile correctly on
Mac OS X.
- Fixed up SDL2 compilation to automatically use the
SDL2 library on the system, or if that is not available,
use the SDL2 library in-tree. There are no plans to make
modifications to the in-tree SDL2 code.
- Added code to read and discard OpenGL error code before
creating font texture, to avoid false failure handling.
This fixes font rendering on Windows MinGW builds when
output=opengl.
- OpenGL SDL drawn menus fixed to ensure the menu contents
have been redrawn at least twice. One for each OpenGL
buffer because DOSBox-X uses the double-buffered mode.
- SDL drawn menus implemented for output=opengl. The menu
bar in Linux builds is now available in OpenGL mode.
- SDL drawn menus fixed to redraw only when state changes,
and to clean up menu drawing code.
- US keyboards can now enter the "Ro" key in PC-98 mode.
Default binding is set up to map the Windows Menu key
as Ro in PC-98 mode.
- VGA option change code fixed to trigger scaler redraw
correctly. Changing video modes or changing between
8/9-pixel VGA text no longer leaves artifacts on the
screen.
- Added code to force redrawing additional frames when
output=opengl, in order to correct a bug with Linux/X11
and MesaGL where the first OpenGL buffer swap after
SDL_SetVideoMode() is misplaced when the window size
changes.
- Renderer SSE line comparison fixed to use correct sizeof()
of the integer type during compare.
- Renderer fixed not to use SSE and non-SSE line comparison
at the same time, if SSE was enabled at compile time.
- Fixed in-tree SDL 1.x library to allow DOSBox-X to disable
auto-refresh of the window in Linux/X11 after SDL_SetVideoMode
to prevent visible flickering when resizing the window.
- Conditional support for Direct3D (9) output enabled for
MinGW builds, if the MinGW headers are available (yksoft1).
Option is disabled by default.
- Configuration GUI dialog box widened to accommodate buttons
that were previously cut off on the right.
- Replace E_Exit() with LOG_MSG() for key codes from the mapper
that a keyboard scan code generator does not recognize. This
fixes E_Exit() crashes if typing certain keys on a Japanese
keyboard with no equivalent in IBM PC/AT mode.
- Added code to double the size of the menu and menu items if
the window is 1280x800 or larger, for users with high
definition laptop displays and screens.
- Enforce minimum window size of 640x400 if the menu bar is
visible and DOSBox-X is drawing them, to make sure the menus
are accessible on screen.
- Removed auto-scalar-size code when output=surface that was
causing problems when resizing the window.
- Do not show "screenshot" menu item if screenshot support not
available at compile time.
- Remove "always on top" for anything but Windows at this time.
- Disable "Show debugger" option on Linux and Mac OS X if no
console attached to STDIN/STDOUT/STDERR.
- Disable "Show console" option on Linux and Mac OS X since
the console is not under our control.
- Windows "Always on top" fixed to remember selection and
enforce it between SDL_SetVideoMode and fullscreen entry/exit.
- Windows builds fixed NOT to change window Z-order on the
screen when updating the window on SDL_SetVideoMode.
- HX DOS builds fixed to keep window maximized at all times
to fill the otherwise unused space on the screen since
HXGUI only supports one window.
- Menu framework support for any other platform (including
Linux) added. The menus are drawn by DOSBox-X itself
using the 8x16 VGA font. This also gives SDL 2.x builds
a working menu. These menus are used if no other platform
specific menus are available. These menus are NOT AVAILABLE
at this time if output=opengl.
- Cycle count edit dialog box fixed to immediately place
keyboard focus in the text field, and to process
ENTER and ESCAPE keyboard input as OK and CANCEL
button input. You can type a new cycles count without
having to click on the text field first.
- Menu framework and mapper fixed so that menus always
reflect the mapper binding in the menu.
- Windows SDL 1.x fixed async hack to properly destroy
and shut down the parent window again.
- Fixed output=opengl crash on Mac OS X.
- Menu framework support for Mac OS X NSMenu objects added.
This gives DOSBox-X the same useful menu on Mac OS X
instead of the useless default menu SDL 1.x offers.
- Menu framework support for Windows win32 menu resources
added. The Windows menu is now generated at runtime,
the static IDR_MENU resource is no longer used.
- New platform independent menu framework added. Menus
that were once Windows-only are now available on
any other platform including Linux and Mac OS X.
- In-tree SDL 1.x library fixed to #define a special
variable that the code now requires to compile
SDL 1.x builds. The option to use your host SDL 2.x
library is left open.
- C++11 is now mandatory to compile DOSBox-X
0.82.6
- Resizing the window in SDL 1.x Windows builds
fixed to work correctly in the latest build
(1803) of Windows 10. Prior to this fix, resizing
the window on that build would quickly hit a deadlock
that prevented the user from moving or resizing the
window again after that point.
- PC-98 dosbox.conf option added to select between
accurate key/shift mapping, vs an alternate mapping
appropriate for US keyboards (Yksoft1)
- SDL 1.x for Linux/X11 modified to differentiate
Ro and Yen keys despite X11 xkbmap apparently
mapping both to the backslash. The keymap is
queried to detect the scancodes at startup
in order to return the correct SDLK constant.
- SDL 1.x and DOSBox-X mapper code updated to
correctly map Ro, Yen, @ ^ ; : keys on a JP
keyboard in Windows and Linux.
- PC-98 keyboard BIOS handling updated to generate
ASCII codes according to PC-98 layout, instead
of by US keyboard layout.
- Mapper updated to support @ (at sign) key,
^ (caret) key, and a few other keys that
exist on JP keyboards.
- "Hold" modifier for mapper bindings fixed.
It is now possible to tap the key again to
release the hold.
- VHD differencing disk support added (Shane32)
- INT 18h AH=0Ah updated to support 20-line
text mode. Some games use the 20-line text
mode to space the text out vertically.
Such games will display correctly now.
- INT 18h now maintains text layer state
in BIOS data area byte 0x53C, just as
the actual BIOS does.
- Added PC-98 INT 18h function AH=0Ah and
AH=0Bh to support BIOS calls that enable
"Simple Graphics" mode. This fixes
problems with other games having vertical
lines over the graphics, even though
these games do not appear to use the
simple graphics at all. (yksoft1)
- Added support for PC-98 "Simple Graphics"
mode of text layer attribute bit 4. When
enabled, the attribute bit 4 changes
meaning from vertical line to a bit
indicating that the 8-bit character is
a low resolution 2x4 bitmap to be
displayed in the text layer. This fixes
score and status display in Carat.
- PC-98 INT 18h now implements AH=31h to
report CRTC, text and graphics state and
24khz/31khz video mode selection. This
fix allows some games including Touhou
Project to pace it's gameplay correctly
in either video mode.
- MinGW HX DOS builds default to host key
F12 again
- PC-98 mode now offers selection between
24khz and 31khz video modes (yksoft1)
- KEYB.COM fixed to load only the fonts the
ROM BIOS has allocated. This fixes a guest
system crash if using KEYB.COM with
machine=ega
- Moved host key to F11 for Windows. F12 is
already taken by some internal debugging
voodoo within Windows itself.
- DOSBox-X codebase now strongly encourages
compilation with C++11, will become
required soon.
- BOOT command fixed to make it possible to
IMGMOUNT multiple floppies to drive 1, and
boot from another disk in drive 0. This
should enable the use of DOSBox-X with
PC-98 games that expect to boot from drive
A and the user to rotate through floppies
in drive B.
- IMGMOUNT fixed to support mounting with no
filesystems and multiple disk images, and
using the "swap floppy" command to rotate
through them.
- Added options to BOOT command that allows
specifying multiple disk images and an option
that says to swap disk images only through
one drive.
- VHD dynamic support added (shane32)
- INT 10 AH=9 background color fixed in 256-color
VGA modes.
- Intro text updated to reflect new default
key bindings.
- Mapper shortcuts not in common use now exist
without any default binding, and most existing
default bindings are now associated with the
"host" key.
- Added 4th modifier "host" key to the mapper.
This "host" key is F12 by default. The intent
is to eventually move most mapper shortcuts
to some combination of F12 and another key,
rather than many shortcuts scattered over the
keyboard. Existing dosbox mapper files should
continue to work.
- Renderer and 32bpp VGA display code fixed to
reorder RGBA order for correct display on Intel
Mac OS X systems. Mac OS X, on Intel systems,
uses a strange BGRA 32bpp format that requires
some adjustment on our part to display correctly.
- Added more 24bpp INT 10h VESA BIOS modes.
- Removed per-sector debug messages from VFD/FDD
image support code.
0.82.5 (04/18/2018)
- Expanded memory manager memory copy fixed to
enable A20 gate temporarily so that the copy
works correctly.
- PC-98 FM board emulation now defaults to IRQ 12
instead of IRQ 3. A lot of PC-98 games seem to
have a strong preference for that IRQ with regard
to FM music.
- PC-98 reset I/O port (F0h) fixed to emulate CPU
reset according to the SHUT0 and SHUT1 state set
by the guest. Normally writing port F0h is a
signal to reset but SHUT0 and SHUT1 can be set to
indicate alternate behavior. This fixes VEMM486.EXE
(an expanded memory manager) and allows it to run,
since this manager appears to reset by port F0h
then resume execution normally. Prior to this fix,
booting a MS-DOS disk image that loads VEMM486.EXE
at startup yielded nothing but an infinite reboot
loop.
- XMS and EMS emulation fixed not to leave A20 gate
enabled unless EMS emulation is set to EMM386 and
dosbox.conf is set to run the system in virtual
8086 mode. There are plenty of DOS games that
malfunction if loaded too low in memory with the
A20 gate enabled.
- PC-98 mouse emulation, at the 8255 level, now uses
new C++ abstraction that seems to work fairly well
even with the common PC-98 MOUSE.COM driver.
- "BOOT" command in PC-98 mode updated to no longer
require the --force switch. Booting MS-DOS from a
hard disk or floppy disk image in PC-98 mode is
generally functional now.
- Added PC-98 SCSI/SASI hard disk emulation, and fixed
BOOT to enable booting PC-98 MS-DOS from a hard drive
(HDI image)
- FAT driver fixed to read/write logical sectors vs
actual drive sectors and removed geometry remapping
hack.
- FAT driver fixed to avoid memory corruption that
may occur if reading a partition table from a drive
that has more than 512 bytes/sector.
- .BAT file parsing fixed to handle BAT files not
in the current directory (yksoft1)
- Fixed floppy controller emulation bug that failed
to advance sectors during multi-sector read/write.
- Fixed floppy emulation bug that prevented seeking.
The "head" would get stuck at track 0 and never move.
- Dynamic core allows running with paging enabled again,
IF dosbox.conf says to allow it (yksoft1)
- DOS file I/O functions AH=3Fh and AH=40h updated to
reflect undocumented MS-DOS behavior that silently
truncates read/written byte count if the offset
and byte count reach beyond the end of a 64KB segment.
This fixes some demoscene productions that read 64KB-1
bytes but apparently rely on this behavior to avoid
display errors.
- FluidSynth fixes and API updates. DOSBox-X no longer
uses a private API within FluidSynth. (heftig)
- Added dosbox.conf option to control the size of the
DOS "Swappable Data Area" which is said to help with
shelling and task swapping in WordPerfect 5.x and 6.x
- Added "minimum mcb free", and set minimum mcb segment to
value same or similar to DOSBox SVN. The "free" option
directs DOSBox-X to allocate memory before that segment
value to fill memory.
- Fixed COMMAND.COM PSP segment to correctly identify it's
resident size in memory.
- COMMAND.COM in the DOSBox shell now allocates itself
normally instead of from a special segment so that it
appears normally in the MCB allocation chain.
- BIOS now clears it's stack before booting the DOS shell.
- Fix Pause (CTRL+Pause or ALT+Pause) to release all keys
in the mapper so that CTRL, ALT, or Shift are not left
"stuck" when emulation resumes.
- Initial host keyboard recognition, and base framework
for general keyboard language/layout handling. Keyboard
layout recognition added for Windows and Linux/X11.
- Fixed 350-line INT 10h VESA modes not to apply EGA mode
adjustments, which fixes display distortion.
- INT 10h VESA modes 720x480 and 848x480 fixed.
- Fixed INT 10h VESA emulation to round up bytes/scanline
so that 4bpp planar modes display properly.
- Fixed INT 10h VESA mode 1400x1050 16-color (4bpp planar)
mode to resolve overlapping mode number.
- Pulled in VGA vtotal + 2 fix from DOSBox SVN
- Pulled in EGA display mode fixes from DOSBox SVN to fix
EGA graphics emulation.
- Fixed INT 10h AH=1Ch (save/restore VGA state) to handle
VGA attribute controller properly so that the display is
not left blank.
- PC-98 GDC emulation fixed to handle START DISPLAY properly
by un-blanking the display (fixes "Ellena")
- Fixed possible format string vulnerabilities (gnustomp)
- Added menu options to enable/disable EGC and GRCG
emulation (yksoft1)
- Added options to enable/disable EGC and GRCG emulation
(to emulate older hardware).
- Added PC-98 BIOS function to read 8x16 character bitmaps,
which fixes "Power Dolls 2"
- BIOS now reports 16-color and EGC graphics. Some games
that check the BIOS for capabilities may now begin to
use 16-color graphics and EGC functions.
- Added PC-98 INT 18h function to read character font.
This also resolves garbled text in TH01.
- PC-98 GDC emulation now uses cursor specification
(line per character row) to determine whether graphics
are doubled vertically or not. Several PC-98 games
switch between 200-line (doubled) and 400-line graphics
by programming the GDC directly, rather than through
the BIOS.
- Added various video-related BIOS variables to the data
in PC-98 mode.
- GDC RESET/SYNC debug text updated to indicate which GDC
is undergoing the RESET/SYNC.
- Debugger "LOG" command (CPU execution logging) fixed to
automatically stop logging when the BIOS begins the
POST routine after system reset. The user who invoked
"LOG" probably cares more about what happened up to the
game crash, fault and reset rather than normal BIOS startup.
- BIOS now properly unmasks the PC-98 cascade IRQ, which
allows IRQ 8-15 to function, including the mouse (IRQ13)
- Debugger interface now indicates whether 80386 paging is
enabled or not at any time.
- Help text updates to reflect DOSBox-X changes (Shane32)
- BIOS INT 13h emulation updated to support up to 4 hard
drives (Shane32)
- IMGMOUNT and BOOT code cleanup (Shane32)
- IMGMOUNT RAM drive support: Additional fixes and geometry
work done, and some hangs resolved (Shane32)
- CPU emulation fixed to allow setting a breakpoint on
ANY interrupt of a specific number, not just software
interrupts. It is now possible to use BPINT to break
upon hardware (IRQ) interrupts.
- DOS kernel fixed to drop to the debugger if the MCB
(memory control block) chain is corrupted, so that
the corrupted state can be examined. When the debugger
continues execution, a full restart of the DOS kernel
is run. If DOSBox-X was compiled without the debugger,
then the normal E_Exit() path is still taken.
- Added debugger command to show, and modify, the state
of the PIC (interrupt controller).
- Added debugger command to view or change the A20 gate.
- Added debugger command to view the state of EMS, memory
handles, allocation, and EMS page frame mapping.
- Added debugger command to view the state of XMS, memory
handles, and allocation.
- Added debugger command to view the layout of the ROM
BIOS region (0xF0000-0xFFFFF) chosen by emulation.
- DOS kernel now logs kernel allocations, which can be
seen in the debugger using the "DOS KERN" command.
- Added "RUN" command as an alternative to hitting F5.
- Added "RUNWATCH" to the debugger, so that watching the
system run in the debugger is possible.
- Debugger data window can now be used to view memory in
segmented, virtual (through paging), and physical (bus
address) modes.
- Debugger window data and code view windows now indicate
regions of memory that are beyond the end of the segment.
- Debugger window data and code view windows now indicate
regions of memory that are paged out (will cause a page
fault if accessed)
- PC-98 A20 gate I/O port F6h fixed to work properly as an
enable or disable, rather than just an enable. The PC-98
version of HIMEM.SYS no longer complains about not being
able to control the A20 gate.
- IMGMOUNT RAM drive support: Ramdrive bug fixes and changed
drive limits from ATA limits to BIOS/MBR (Shane32)
- INT 21h fixed to use BIOS INT 1Ch to read date and time in
PC-98 mode. Arrowgun now runs properly.
- Fixed EMS emulation not to claim XMS memory (and zero BIOS
extended memory size) if EMS emulation is in EMS board mode
(and therefore not allocating extended memory through HIMEM.SYS).
- PC-98 INT 1Fh extended memory copy implemented. DOS games in
PC-98 mode can now use this API to access extended memory.
- Fixed HIMEM.SYS emulation in PC-98 mode to zero BIOS extended
memory values when claiming extended memory.
- PC-98 mode now sets BIOS data area values correctly regarding
conventional and extended memory.
- Added rudimentary emulation of non-volatile RAM at the
trailing edge of text RAM (A3FE0-A3FFF).
- PC-98 mode now adds additional BIOS data values at boot time
so that guest OSes like PC-98 MS-DOS can see the floppy drive,
see keyboard input, and determine the boot drive properly.
It is now possible to boot MS-DOS in PC-98 mode.
- Added rudimentary PC-98 INT 1Bh BIOS interrupt, at least for
floppy disk emulation.
- Cleanup and formatting enhancements to IMGMOUNT ramdisk (Shane32)
- DOS CON emulation in PC-98 mode now emulates two additional
ANSI escapes to clear the screen that are specific to NEC's
MS-DOS implementation, which fixes text layer problems with
Rusty.
- PC-98 GDC dip switch 2-8 emulation fixed. It was backwards.
This may break existing dosbox.conf configurations, apologies
in advance.
- Added -xms option to LOADFIX command. When given, the command
consumes extended memory instead of conventional memory.
- HIMEM.SYS emulation fixed to behave more like Microsoft's
HIMEM.SYS implementation regarding global & local A20 gate
control.
- Mac OS X builds fixed to work from the user's home directory
if run from the Finder, instead of trying to operate at the
root of the filesystem as directed by the Finder.
- Mac OS X builds now put the FREECG98.BMP file inside of the
.app bundle, and fall back to it if not found in the current
directory.
- RPM builds now install FREECG98.BMP in /usr/share/dosbox-x
and refer to it if not in your local directory, in order to
better provide PC-98 emulation.
- PC-98 BOOT command: Loading addresses and CPU register layout
updated to match actual hardware behavior, in which the boot
sector is loaded at just under 128KB.
- Build updates to support compiling for Windows with MinGW.
- BOOT now accepts a --debug switch that causes DOSBox-X to break into
the debugger when the boot sector begins to execute.
- BOOT now accepts a --force switch to override the PC-98 lockout,
if the user wants to better understand why I locked it out in PC-98 mode.
- PC-98 support now supports reading font from FONT.ROM, if available.
- Code, data, and output now respond to arrow, page up/down and
home/end keys as a user would normally expect.
- Arrow and page up/down keyboard input now goes to active window
instead of mapping directly to any specific window.
- Debugger interface now has the concept of an "active" window, and
the title bar of each window hilights if it is active.
- Debugger interface now hides the "variables" window by default.
- Fixed window "titles" in debugger interface to fill the terminal
line they're on and use ncurses horizontal line character which
on modern systems looks better than hyphens.
- Removed one line padding around data window in debugger interface.
- Debugger interface redesigned to permit more flexible layout
- Debugger interface no longer crashes when terminal window is sized
down too small (when there is no room for the output window)
- EMM386 (ems) emulation fixed to always turn on the A20 gate when
the DOS application requests to map pages into the EMS page frame.
This fixes crashes with Creative's Sound Blaster 16 installer when
run with the A20 gate turned off.
0.82.4 (02/28/2018)
- Updated ramdisk formatting code to better match FAT12/FAT16
specifications and limits (Shane32)
- Menu items related to Gravis Ultrasound, Glide emulation, Innova SID,
and other IBM PC-specific options are now grayed out in PC-98 mode.
- Updated Windows menus to gray out CPU core and type options that
are invalid. Selecting a prefetch CPU type while core dynamic is
no longer possible, and selecting dynamic core while using a
prefetch cpu type is no longer possible.
- CPU type submenu in Windows updated to reflect all types supported
by DOSBox-X including 8086 and 286 cores.
- Fixed E_Exit() crash on Windows in PDCurses endwin() that only
happens if you had never brought up the debugger console window.
- Minor oddities with OPNA stereo panning resolved.
- Sound Blaster, Adlib, and PC-98 FM emulation now reset state
correctly when the reset signal is given to avoid stuck notes.
- Fixed BIOS logo in PC-98 mode to properly reset the graphics mode
so that the logo is visible.
- Added Windows menu items to control PC-98 GDC speed, 4-partition enable,
200-line "scanline" effect enable, and PIT timer clock control.
- Added "Restart DOS" command to the Windows menu, with code to
allow it only if at the initial DOS shell.
- Added "multi-track WAV" command to the Windows menu, under Capture
- Added "reset system" command to the Windows menu
- "Restart" menu command updated to clarify that it restarts DOSBox-X entirely.
- OpenGL HQ output removed.
- Commands to force driver (DirectX or WINDIB) removed.
- Default disk I/O limit raised to more reasonable speeds.
- FM code borrowed from Neko Project II now compiles on Mac OS X
- IMGMOUNT now supports mounting a RAM drive (using -t ram) (Shane32)
- Direct3D fullscreen aspect ratio fixes, especially for
monitors with a 5:4 aspect ratio (such as 1280x1024) (Shane32)
- "Show menu" in Windows builds system menu is now a toggle
to show/hide the menu bar (Shane32)
- Fixed broken color palette with CGA composite and EGA
machine emulation. Composite CGA and machine=ega displays
properly again.
- According to documentation, IBM PC and PC-98 use different
initial PC speaker frequencies. Update the code to match.
- 8254 I/O port alias at 3FD9h-3FDFh added, which is needed
for several PC-98 games that program the PC speaker
frequency through those ports instead of through 71h-77h
- New Intel 8255 emulation. PC-98 system 8255 emulation
now uses this emulation, along with PC speaker emulation.
- Fixed XMS memory copy functions to enable the A20
gate so extended memory copies work correctly whether
or not the DOS application in question made the call
with A20 enabled. This fixes crashes and memory
corruption while installing Windows 3.1 using SETUP.EXE.
- "CLS" now sends the proper ANSI escapes to clear the
console in PC-98 mode.
- BIOS logo in PC-98 fixed to clear graphics RAM and
set graphics back to 8-color digital mode when booting
to DOS. This should fix palette errors and color issues
with older PC-98/PC-88 games that use the 8-color
graphics modes.
- Added PC-98 INT 1Ch timer interval BIOS function,
and timer countdown routine in IRQ 0.
- Windows builds now incorporate pdcurses and enable
the debugger interface (bulletshot60)
- DOSBox-X now tracks the systemwide keyboard layout
on Windows, and acts on user changes to the keyboard
and language in the system.
- Removed hack code in SDL 1.x that sets DOSBox-X's
keyboard layout to the US layout even if the host
uses anything else.
- Fix CPU cycles count increment not to nag you to use
core=dynamic if a) dynamic core is not available or
b) you're already using dynamic core.
- Added dynamic core back, it seems to be very stable
again.
- PC-98 FM board now allows changing the base I/O port
and IRQ (interrupt) line used by the card.
- PC-98 mode now supports joystick emulation. Joystick
input is mapped through the DOSBox mapper to the
PC-98 FM board where DOS games expect to see it.
- Added dosbox.conf option to select which PC-98 FM
board to emulate.
- Fixed PC-98 FM code to enable the ADPCM and Rhythm
FM channels.
- Re-ported Neko Project II FM board emulation, this
time keeping the code intact and keeping the separate
board emulations intact for PC-98 mode.
- VGA palette errors with Crystal Dream II fixed.
- PC-98 FM synthesis fixed not to initialize itself
again when rebooting, which fixes a problem with
garbled FM synthesis after rebooting.
- Removed some now-unnecessary SDL Video quit/init
calls from Windows builds.
- machine=pc98 now starts entire emulation in PC-98
mode instead of booting up in IBM PC mode and
switching to PC-98 mode.
- Initial "BIOS" startup screen now operates in
PC-98 mode when machine=pc98.
- Prefetch core debug code now disabled at compile
time. Seems to be stable so far.
- Prefetch core now emulates partial load of the
prefetch buffer on miss, and completing the buffer
fill on hit, to better emulate (probable) 80486
behavior.
- 486_prefetch is now a valid cputype setting, despite
the setting having existed for years in the source
code. Prior to this fix, 486_prefetch was ignored.
0.82.3 (02/13/2018)
- Removed DOSBox SVN-style "fast" A20 gate emulation.
Recent changes make it infeasible to keep. "fast" is
now mapped to "mask" mode.
- RAM aliasing is now always on, even if memalias is not
set, in order to help enforce A20 gate behavior, and
to fix emulator crashes when a non-aliased RAM page
is referenced through an alias.
- Cleanup and rewrite of prefetch core, to make the code
cleaner and more readable and maintainable.
- DOS file I/O updated to apply a proper delay rather
than the old DOSBox SVN code's cycle count dependent
method. The delay by default will slow disk I/O down
to mid 1990's IDE PIO speeds, which can resolve issues
with MS-DOS demoscene or game executables that can
malfunction when disk I/O is too fast.
- PIC code updated to enforce a proper IRQ delay on ALL
IRQ signals, which fixes issues with MS-DOS executables
that have race conditions between their code and their
interrupt handlers.
- DOS Shell now shows the full intro text only at first
run, instead of every shell invocation.
- Use FCB record size of 128 bytes if the FCB record size
is zero (from DOSBox SVN).
- PC speaker fix not to generate a continuous tone if
the PIT timer was set to mode 0. This fixes issues with
many early 1990s demoscene executables leaving the PC
speaker enabled (BEEEEEEP).
- Register DEBUGBOX.COM at DOS environment start instead
of boot, which allows the command to work again.
- EXE loader sets stack pointer (SS:SP) into PSP segment
(from DOSBox SVN)
- EXE loader fixed to use the larger of the minimum and
maximum memory sizes listed in the EXE header, which
fixes some demoscene executables with a minimum size
larger than maximum.
- VGA DAC (palette) emulation updated to better match
actual SVGA chipset (Paradise SVGA) behavior, which
fixes some VGA palette errors in some demoscene
productions.
- Added -nocachedir option to internal MOUNT command, to
disable directory caching for a local folder mounted
to a drive letter. When mounted this way, changes on
the host filesystem are immediately visible in the
guest DOS environment.
- Added -ro and -rw options to internal MOUNT command, to
allow mounting local folders to a drive letter as a
read-only volume.
- MIDI Fluidsynth fixed to initialize and free state properly
so that switching to and from Fluidsynth doesn't cause
a segfault or crash.
- MPU-401 fixed to allow changes to MIDI configuration from
CONFIG.COM.
- DOS filename handling fixed to maintain ASCII conversion
to uppercase, while not converting Shift-JIS double-byte
characters in PC-98 mode. This fixes Shift-JIS filename
corruption when the trailing byte can be mistaken for
lowercase ASCII a to z.
- Windows fixes to keep menu bar items updated with
DOSBox-X state.
- Remove WM_DROPFILES handling, for now. The code remains
to allow re-enabling later.
- SDL 1.x builds fixed to process only WM_COMMAND (menu
bar) and WM_SYSCOMMAND (system menu) events so that
the general chatter in modern Windows system does not
drown out the messages. This fixes issues where the
menu bar doesn't work on some systems.
- SDL 1.x builds fixed to handle menu bar input using
SDL's WM events instead of fighting with SDL's message
pump to receive menu events. This fixes potential
issues with losing menu bar events.
- dosbox.conf reference included with Windows builds
now uses MS-DOS line endings so that the file can be
edited in NOTEPAD.EXE
- New dosbox.conf option to control whether the menu is
shown by default in Windows builds.
- titlebar= SDL dosbox.conf option, to allow showing a more
user friendly name for the program instead of just using
the EXE name.
- E_Exit() on Windows now displays the message using
MessageBox() in addition to sending to STDERR, so that
Windows users see the error even if they are running
it from the desktop instead of the command line.
- PC-98 EGC bit shifter emulation fixed to correctly support
ascending and descending bit shifting in either direction.
This fixes screen shake emulation errors with Touhou Project
TH04 and TH05.
- Linux/X11 fixes to SDL 1.x to better match and compare
Visuals (descriptions of the screen) since X11 libraries
don't seem to use the same pointer values for the same
Visuals.
- ALT+TAB or loss of focus from fullscreen in Windows now
restores the window instead of minimizing it.
- 3Dfx OpenGL will hide the minimize and maximize buttons
in Windows while active.
- Windows menu bar items are now grayed out when 3Dfx OpenGL
emulation is active (items that cannot be used at that time).
- Fix Windows system menu to always keep "show menu".
- GFX rendering fixed not to render any output while 3Dfx
OpenGL emulation is active.
- 3Dfx OpenGL bug fixes to properly restore the DOS console
when the 3Dfx card is de-initialized and the game returns
to the DOS prompt.
- Linux/X11 window output fixed to keep the window on the
screen even when switching between OpenGL and non-OpenGL,
and when setting the SDL video mode.
- Remove some init hacks and SDL forced reinitialized hacks,
so that the window is stable on the screen.
- Added code to do more OpenGL state initialization (both
output=opengl and when initializing 3Dfx OpenGL emulation)
to make more consistent output.
- 3Dfx voodoo OpenGL based emulation fixed to switch out of
fullscreen mode IF DOSBox-X was fullscreen at the time the
card is initialized.
- 3Dfx voodoo OpenGL based emulation no longer allows fullscreen
mode, and does everything it can to prevent window resizing.
- Linux/X11 disable XRandR, XV, and X modeset functions. Do not
change monitor resolution.
- MPU-401 MIDI emulation fixed to look at all conductor message
bytes for code 0xFC (ALL END) instead of just the first byte.
This fixes hangs in games that send additional bytes prior to
0xFC and then expect the MPU-401 to signal 0xFC back when the
games are waiting for music to stop.
- Fix DOS CON driver not to signal data ready for PC-98 scan
codes that have no corresponding ANSI code. Tapping numeric
keypad keys during the title screen in Touhou Project should
no longer cause the game to pause waiting for keyboard input
when going into demo mode.
- Fix DOS CON driver to signal data ready for buffered escape
code.
- Fix PC-98 keyboard emulation not to apply IBM PC "extended"
keyboard scancode filtering.
- Window maximization does not count as a user resize preference.
- Fix Windows builds to enable DirectSerial, Direct LPT, modem,
emulation.
- New mapper shortcut to restore the window's original size.
- Fix bug with SHL instruction and OF flag, which corrects some
games and their decompression routines.
- Fullscreen (monitor) modesetting removed. DOSBox-X either runs
in a window, or scales up to fill the monitor, but will not change
the monitor resolution.
- Resize handling fixed to differentiate user resize verses resize
caused by DOSBox-X changing the window dimensions.
- Linux/X11 fixes to avoid flickering when resizing the window, and
to avoid redrawing unless necessary.
- Window resize management, to scale/arrange the output to fit the
window (for output= surface, opengl, direct3d)
- Enable resizing again, except when the GUI or mapper is active.
- Fix Linux/X11 to always take resize events, instead of ignoring
all further resize events just because one resize event is forever
"pending"
- Linux/X11 builds now track the size of the window on the desktop,
to keep track of resizing and maximizing.
0.82.2 (01/29/2018)
- Linux builds no longer enable window resizing. The ability to
resize will be added back when the emulator can better handle
the user resizing the window.
- Windows and Linux now have synchronized build date and version
strings.
- Codebase begin transition to C++11
- The Windows maximize button no longer triggers fullscreen mode.
- Direct3D, OpenGL, and Surface outputs updated to fill the window
in Windows builds when the window is maximized. If aspect
correction is enabled, the Direct3D and OpenGL outputs will
scale the DOS screen (with pillarbox/letterbox padding) to the
correct aspect ratio and center within the maximized window.
- Fixed minor memory leak in MT32 (MUNT) synthesizer usage.
- Fixed uninitialized state issues with DMA channel 4 (cascade).
- IMGMOUNT now allows mounting the El Torito bootable floppy image
of a CD-ROM drive as a drive letter and accessible (read only)
filesystem. The FAT filesystem driver was fixed to support working
from sources other than a direct file.
- PC-98 mode fixed not to register certain built-in commands and
binaries to drive Z:\ that are not compatible with PC-98 mode.
MEM.EXE in particular uses IBM PC-specific techniques to gather
it's information, and is therefore incompatible with PC-98 mode.
This can be verified from the source code as MEM.EXE was evidently
borrowed from the FreeDOS project.
- EGA emulation (machine=ega) fixed to render 8bpp (256-color mode)
instead of full 32bpp VGA output. EGA video output is limited to
64-color (6-bit) by the design of the video connector (2-bit R/G/B)
therefore the full precision of 32bpp is not needed. This will also
benefit video capture as the reduced color bit depth will result
in smaller AVI files when recording gameplay.
- Added code to correctly detect 15-bit highcolor vs 16-bit highcolor
display format support, despite SDL falsely indicating 16-bit
color in both cases, which fixes incorrect colors on 15-bit display
modes.
- Fix up VGA DAC/palette mapping to display the emulator screen
properly on 16-bit true color displays. Fixed off-by-one shift
mistake in the DOSBox-X render scaler code that caused
green and purple tints to colors on 16-bit true color displays.
- Add "Show menu bar" command to the Windows "system menu" so that
the menu bar can be brought back after selecting "hide menu bar".
- Losing window focus while fullscreen no longer leaves the emulator
window blank.
- Maximize/restore fullscreen cleanup.
- Removed DDRAW output.
- Fix FAT filesystem driver to clear "success" flag at all failure
return points. This fixes problems where unrecognizable FAT
filesystems are nonetheless presented as a drive letter with
garbled filenames, when IMGMOUNT should have displayed an error
instead.
- Fix FAT filesystem driver to allow PC-98 HDI images to load that
have headcount == 0 in the BPB.
- Fix Adlib emulation not to register a mapper handler if emulation
will jump to PC-98 mode, and fix mapper handler to check if Adlib
emulation is loaded to avoid segfault.
- Add "recording" volume to control the loudness of the audio going
out to capture (WAV, AVI, etc.)
- Separate mixer rendering from master volume. Apply master volume
at the sound card only, leave audio at full volume for recording
(WAV, AVI, etc. capture).
- dosbox.conf and command line option to log CON driver output to
a file. Anything written to STDOUT/CON by a DOS application is
logged this way.
- --time-limit <n> command line option to put a time limit on the
emulator, in seconds.
- Keyboard shortcut for the mapper UI no longer leaves keys "stuck"
in the guest to cause problems when you exit the mapper UI.
- Fixed code mistake that caused OpenGL NB output when dosbox.conf
specified output=opengl
- Mapper layout fixes:
- Shortcut buttons (on the right hand side of the UI) fixed to
become two columns wide if the button text won't fit in one
column.
- Some shortcut button titles shortened.
- Mapper UI updated to show which bindings are being activated by
hilighting buttons in the UI.
- Mapper UI modifier buttons indicate status through hilighting.
- Mapper UI joystick buttons and axes now use hilighting to indicate
that there is input from the device.
- Mapper fix for 4-axis joysticks that may count zero buttons, and
then crash (divide by zero) when the user pushes a button on the
joystick device.
- BIOS emulation now allows you to specify binary blobs to execute
in the guest system as part of startup. One can be specified to
execute just after CPU reset/power-on, and the other just before
booting to the DOS shell. THE BINARY BLOBS EXECUTE IN THE GUEST
ENVIRONMENT AND NOT AS ARBITRARY CODE ON YOUR HOST. This option
is provided for both automated testing and for the curious who
may want to venture into low level ASM hacking.
- INTRO.COM fixed to accept keyboard input correctly in both
PC-98 and IBM PC mode. You can now browse the help text properly
in either mode.
- DOS shell fixed to accept DOSKEY-like input in both IBM PC and
PC-98 mode (including arrow keys, F3, tab completion, etc.)
- DOS CON emulation now provides function keys (F1-F10) in PC-98 mode.
- DOS CON emulation fixed to process PC-98 BIOS codes and generate
PC-98 ANSI escapes as real hardware normally does.
- Mapper no longer shows two sets of the shortcuts (one overlaid
over the keyboard), registration bug fixed.
- PC-98 keyboard interrupt handler now handles CTRL key and
passes most keys as-is down through INT 18h now.
- Removed non-recursive page fault option. It is now always on,
except for internal cases where it needs to be off for callback
instructions to do their work properly.
- Removed dynamic x86 core. It is old and unmaintained code that
is incompatible with the non-recursive page fault system.
- IRQ cascade interrupt fixes and cleanup.
- BAT files given on the command line fixed to occur AFTER the
registration of ULTRASND and BLASTER environment variables.
- PC-98: DOS CON emulation fixed to decode Shift-JIS itself,
with consideration that some proprietary double-byte encodings
yield single-wide characters. DOS program using NEC's proprietary
box/line drawing characters this way should display properly now.
- DOSBox shell "greeting" now displays a proper box in PC-98 mode
instead of framing the text in rows and columns of Katakana. (basic2004)
0.82.1 (12/25/2017)
- Windows builds no longer redirect stdout and stderr to
stdout.txt and stderr.txt. This also fixes problems
with crashing or hanging when run from Program Files.
- Windows releases compiled by TheGreatCodeholio again.
- SDL 1.x and SDL 2.x support in the same branch, selectable
by configuration option or VS2017 build target.
- SC400 emulation fixes
- Mac OS X pixel format fix to avoid corrupt graphics (Martin Lindhe)
- MT32 emulation now explains what ROM images it's looking for,
instead of just stating that it can't find the ROM images.
- Direct3D shaders from Daum (alex)
- NukeOPL OPL emulation
- Basic (experimental) NEC PC-98 emulation (machine=pc98)
- CG (character generator) emulation will need ANEX86.BMP
or FREECG98.BMP
- Some uninitialized state fixes
- FDI, FDD floppy disk support (especially PC-98 games)
- HDI hard disk support (especially PC-98 games)
- DOS FAT filesystem driver: added many sanity, size,
sector size and overrun checks.
- Floppy and hard disk image support now supports sector
sizes other than 512 bytes per sector (up to 1024).
- DOS FAT filesystem driver can now handle FAT filesystems
formatted with 256, 512, or 1024 bytes per sector.
- INT 29h route output to CON driver in PC-98 mode so
games can clear the screen with ANSI codes (Touhou Project).
- NEC PC-98 support for proprietary ANSI codes to clear
screen and show/hide function key row.
- NEC PC-98 FM emulation (borrowed/ported from Project Neko II).
- MPU-401 now emulates relative tempo change commands.
- When mounting folders as a drive letter, filenames are
now translated between guest and host according to the
MS-DOS code page. This allows DOS games to use extended
characters in a way that does not cause invalid filenames
on the host. The host is always assumed to support unicode.
Windows builds will use wide char (UTF-16) host names and
Linux/Mac OS X builds will use UTF-8.
- Code page translation for 437 (US MS-DOS) and 932 (PC-98 Shift-JIS).
- Emulate DOS console function key row in PC-98 mode.
- PC-98 EGC graphics emulation (minimal)
- PC-98 CG support for custom fonts (RAM portion)
- PC-98 EGC minimal ROP emulation
- PC-98 select between 2.5MHZ and 5MHz GDC (for games that demand one or the other)
- Aspect ratio menu item in Windows works correctly now
- Capture menu works correctly now
- Removed "overlay" output
- Fix Direct3D and OpenGL output to enable linear interpolation (smoothing)
- Fixed "double aspect ratio" issue with OpenGL output
- Linux builds compiled against SDL 1.x and running against PulseAudio
no longer hang/crash after some random amount of time (threading conflict)
- PC-98 minimal mouse emulation
- VGA doublescan=false fixed to display correctly, especially with scalers
- SDL 1.x Windows builds fixed to process mouse motion FIRST before
mouse buttons so that guest pointer integration with Windows 3.1
works properly.
- SDL 1.x Windows builds now enforce a 60Hz cap on mouse motion
detection because recent versions of Windows have some latency
when SDL repositions the mouse cursor. This fixes random
erratic jumps in mouse motion when playing games that respond
to mouse movement.
- SDL 2.x fix touchscreen interaction on Windows
- SDL 2.x mapper now responds to touchscreen as well as mouse.
- DOSBox Integration device no longer enables it's ISA PnP device
by default.
- SDL 2.x fix Windows 3.1 "double-click" accidents by ignoring
"mouse" events faked by Windows from the touchscreen.
- "Paper white" HGC/CGA monochrome palette (basic2004)
- CMS (GameBlaster) frequency correction (basic2004)
- SID frequency correction (basic2004)
- Maximize button in Windows now consistently triggers fullscreen mode
- SDL 2.x builds now use a different mapper file name to
avoid conflicts with SDL 1.x builds. SDL scan codes are
completely different between the two.
- Windows builds now include WinPCAP support and NE2000 emulation.
- MOUNT / IMGMOUNT convert backslash to forward slash in path on Linux to
allow dosbox.conf files from Windows to work on Linux.
- DOSBox-X officially no longer targets Windows XP.
Unofficially third party builds may support Windows XP.
- MPU-401 emulation now allows you to choose the IRQ, if desired.
- Windows builds now include reference dosbox.conf so that you
have a list of all options.
- IMGMOUNT and FAT filesystem support now check partition type
field to ensure that the partition chosen is a FAT filesystem.
- IMGMOUNT no longer requires -size parameter if mounting
a HDI disk image.
- IMGMOUNT and FAT filesystem driver updated to support both
IBM PC MBR (master boot record) and PC-98 IPL1 partition
tables.
- Fixed UMB memory selection not to overlap the EMS page frame.
- EMS updated to sit at E000h in IBM PC mode and D000h in PC-98 mode.
- Mapper interface now shows additional buttons for handlers
registered after initial emulator setup phase.
- Mapper fixed to load/save or apply default keybindings for
handlers registered after initial emulator setup phase.
- Mapper fixes now reveal "capture OPL", "hercules palette"
options as well. The fixes also allow the default key
bindings for those functions to work.
- "CTTY NUL" no longer causes DOSBox-X to hang.
- MOUNT now supports use of -q to suppress message when
successfully unmounting a drive.
9/21/2017
Pentium Pro instruction set implementation
https://github.com/joncampbell123/dosbox-x/pull/305
MMX instruction set recompiler for core=dynamic
https://github.com/joncampbell123/dosbox-x/pull/290
0.74
- Several small game specific fixes/hacks/support. (Offensive,
Roadhog, GTA installer, Kingdom O' Magic soundcard detection,
Pirate booter, Armored Fist installer)
- Add the S3-specific 640x480 256 color mode. (fixes regression in "Wooden
Ships and Iron Men" and "I Have No Mouth And I Must Scream")
- Fix a stack overflow that could crash DOSBox.
- Add fake microphone input. (fixes Talking Parrot)
- Modify adlib turn off code, so that it doesn't turn off in
cases where the same sound is repeated over and over again.
- Several small fixes to the CDROM audio code. (HOMM2, Redneck
Rampage and others)
- Several improvements to the CDROM emulation code. (fixes Alpha
Storm and GT Racing 97)
- Some small CPU fixes that might fix something.
- Handle opcode 0xff subcode 7 as invalid instruction. (fixes dif-2 & others)
- Some hercules fixes. (Testdrive)
- Improve support for blanked parts that wrap around to the start of
the screen. (fixes Magic Circle demo and Sid&Al)
- Remove old OPL cores as the new ones seem to work very nicely.
- Modify movie recording code so that the movies aren't corrupt when
you exit dosbox without stopping the movie.
- Change RGB3x scaler to look more pretty.
- Improve initial register values compatibility of the GUS.
- Added autodetection for Gameblaster. (games can find it now)
- Change render preferences a bit to be more compatible with Windows 7.
- Add DOS fixes to terminate program. (fixes Fortune Teller)
- Add FFREEP. (fixes Trucks)
- Improve FPU ST80 in C mode when writing zero. (fixes Antigok)
- Add special int10 scanline function. (fixes mz700 and probably lots
of games that mess with them)
- Fix scrolling in rarely used video modes. (fixes Orphee)
- Modify game specific hacks a bit so that Kick off 3 works again.
- Lots of fixes to the INT10 video parameter table. (Seven spirits
of ra and others)
- Add VGA blanking in machine=vgaonly. (used by Alien Carnage)
- CGA, PCJr, Tandy: Add video blanking, change display start latch
timing, sync pulse width correction.
- PCJr, Tandy: implement vertical retrace interrupt.
- PCJr, CGA: line-by-line video emulation.
- PCJr: support on-screen change of color modes 4medium to 16low. (used
by Ghostbusters booter)
- Hercules: Add green and amber monochrome support.
- All machines: only update the video timing when needed. (Jungle Hunt,
others that synchronize to the video screen might profit)
- Several small DOS fixes.
- Some UMB related fixes. (The Legacy without UMB)
- Fix version number of DSP for SB 1.5. (fixes a few games)
- Several VGA emulation improvements. (Allertone football manager)
- Some Tandy fixes. (Mech Warrior)
- Small improvements and fixes to the OPL emulation.
- Add low level Tandy DAC emulation.
- Some EMS fixes. (fixes Mortal Kombat and others)
- Change SoundBlaster DSP reset mechanism, add sb irq acknowledge logic.
(fixes stmik-based applications)
- Some interrupt pointer location modifications. (fixes Tinker Tales)
- Some fixes to the BOOT code. (fixes Last Mission)
- Respect write-only file information. (fixes Champions of Zulala)
- Some RTC fix. (fixes Tully Bodine and others)
- Improve mouse emulation to work better with Water World.
- Hopefully fix the translation of the configuration file.
- Speed up and fixes for the recompiler core. (pitfall2 pcjr)
- Change memory start location. (fixes 7th Guest installer)
- Several fixes to the batch file handling. (Shift and
use the typed first %0 instead of the parsed %0)
- Improve file redirection and redirected line ends. (fixes
Phantasmagoria 2 DOS installer)
- Fix compilation with new MAC os X version.
- Add 16C550A FIFO support to the serial port emulation.
- Improve modem emulation to get higher speeds.
- Change default samplerates to 44100, blocksize to 1024 and prebuffer to 20,
so that hopefully certain soundcards produce more fluent sound playback.
- Add some rarely used, but for some games critical flags to
the internal commands.
- Add -userconf flag, so that the userspecific configuration can
easily be used together with -conf configfile.
- Improve internal timing with repeating timers (especially with
the dynamic core).
0.73
- Add two new opl2+opl3 emulators. (better speed, different implementation
approach)
- Improved DRO recording/better file structure.
- Add EGA emulation.
- Add special vga machine mode. Supports more of the exotic tricks like
changing the palette during screen updates, 9x16 fonts etc.
- Added special machine modes for the following svga cards:
- S3
- Paradise
- Tseng
- Fix problems with the vga split line feature.
- Improve vesa emulation.
- Add optional selection of old vesa mode for games that don't work
with certain vesa features.
- Improve video BIOS emulation to behave more like a real bios.
- Fixes for emulated 4bpp graphics modes.
- Fixes to paging system.
- Various fixes and improvements for the recompiling core.
- Add arm backend for the recompiling core.
- Add some mscdex quirks when dealing with files that are exactly 8.3 long.
- Small fixes to batch file handling.
- Small fixes to the XMS memory handling.
- Various fixes for aligned memory on hosts that want it.
- Various improvements to the mouse.
- Fixes and small speed ups to the debugger.
- Fix and improve lot's of compilation problems. (curses detection,
GCC 3.4 and GCC 4.X fixes)
- Added some basic auto keyboard layout handling. (windows only currently)
- Add basic support for evdev keyboard driver.
- Various fixes to the timer. (improve mode 2 timer changes,
implement mode 1, improve gate2 handling)
- Add audio extraction and mci audio support. Should enable CDROM audio
for Vista and adds volume control.
- Improve the directory cache speed a lot, especially with mounting slow
media like network paths.
- Various fixes to the create temporary file call.
- Don't keep batchfiles open during execution. Allows rewriting of the
active batchfile. (menu programs use this trick sometimes)
- Fix problems with filenames with 2 extensions.
- Add some more lowlevel dos tables.
- Fixes to hercules emulation.
- Fix flag handling for special case of ROR.
- Make the batchfile handling in regard to IF more flexible.
- Fixes to scrolling/panning feature.
- Add prefetch queue emulation.
- Make the emulated cpu type selectable. This is mainly the
identification commands and the way paging works.
- Some special EMS functionality added. (OS handles, zero-page handling)
- Improve support for EMS when booting a different OS.
- Improve cdrom speed detection by games.
- Improve stability of cycle guessing code, when there is background
activity.
- Fix various mscdex and cdrom detection schemes.
- Added Coremidi support on Mac OS X.
- Improve support for DOS devices when used to detect the existence
of directories in various ways.
- Add IRQ 2 emulation on VRET. (ega only)
- Added video parameter table and video state functionality.
- Increase default freespace to 250 MB.
- Some fixes to the fat filesystem handling for disk images.
- Some soundblaster fixes and command additions.
- Fix mixer 16bit direct transfers on bigendian hosts.
0.72
- Fixed uninitialized variable in joystick. (Fixes crashes on Vista and
Mac OS X)
- Some bugfixes and speedups to the 64 bit recompiling core.
- Fixed sign flag on soundblaster dma transfers (Space Quest 6 intro)
- Fixed a bug in keyboard layout processing code and fixed certain
layouts.
- Fixed Dreamweb.
- Improved speed unlocking when running cycles=max.
- Fixed a crash related to the tab completion in the shell.
- Improved aspect correction code. Should now be like how a real monitor
handles it.
- Fixed a bug in the xms status report code. (Blake Stone 1.0 shareware)
- Added a lot more keyboard layouts.
- Fix crash related to changing the scaler before a screen was created.
- Hopefully fixed compilation on *bsd.
- Enabled auto cpu core selection for recompiling core as well.
- Made the used joystick selectable when 4axis is specified.
- Added some hints for inexperienced DOS users to the shell.
0.71
- Add a new recompiling cpu core, which should be easier to port.
- Add 64 bit version of the recompiling core.
- Add mipsel 32 bit version of the recompiling core.
- Fix a few small problems with FCBs. (fixes Jewels of darkness and
cyrus chess)
- Raise some more exceptions. (fixes vbdos)
- Fix a few problems with the dynamic core. (fixes Inner Words,
Archmimedean Dynasty and others)
- Improve/Fix fallback code for certain graphics cards.
- Fix a few cd audio related bugs.
- Add an undocumented MSCDEX feature. (Fixes Ultimate Domain)
- Fix some pcspeaker mode. (fixes Test Drive and similar games)
- Improve dos keyinput handling. (fixes Wing Commander 3 exit dialog)
- Remove Exit condition on fully nested mode. (fixes some demo)
- Add image file size detection.
- Add/Fix some ansi codes. (fixes PC Larn and certain versions of
infocom games)
- Several general DOS fixes. (fixes nba95, hexit and various other games)
- Add some valid input checks. (fixes 3d body adventure and similar
games)
- Fix digital joystick centering problem.
- Reenable textmode 54 and 55.
- Fix a pelmask problem with univbe 5.0 lite. (fixes Panzer General)
- Fix minor mixer underflow.
- Some general image and bios disk emulation fixes.
- Hopefully fix compilation on BSD and darwin.
- Try using ioctl cdrom access by default if possible.
- Fix some svga detection routine. (fixes Grandest Fleet 2 and Bobby Fischer
Teaches Chess)
- You can now close DOSBox using the status window in win32.
- Add support for NX enabled systems.
- Fix a casting error which only showed with certain compilers. (fixes
various games under mac os x and 64 bit linux)
- Improve timer and add gate 2 support. (fixes various games and
joystick problems)
- Improve mouse. Add undocumented backdoor. (fixes Last half of Darkness,
PC-BLOX and others)
- Add/improve support for ~ and ~username in all commands.
- Fix a font problem with the pcjr/tandy. (fixes personal deskmate 2)
- Change dma routine a bit. (fixes ticks in sound in various games)
- Allow read-only diskimages to be booted. (fixes various booter
games)
- Add basic hidden file support on cdrom images. (fixes Player
Manager 2)
- Add some rarely used functionality to the int10 mode setup. (fixes
WW2 Battles of the South pacific)
- Add ability to force scaler usage.
- Speed up flag generation and make it more 386-like.
- Some colourful feedback in the mapper.
- General code cleanup.
0.70
- Improve register handling and support with XMS.
- Fix some issues with deleting open files.(windows only issue)
- Add dummy LPT1 class. (windows only issue)
- Improve some of the internal dos commands. (choice, copy and shift)
- Improve ROM area. (for games that use it for random numbers or
overwrite it as some sort of detection thing)
- Improve compatibility of dynamic core by making it handle certain
pagefaults earlier.
- Move internal dos tables around so we have more umb memory.
- Add some dos tables.
- Dynamic core supports io exceptions.
- Move some interrupt handlers to XT Bios locations.
- Add a dynamic fpu on x86.
- Improve fpu on non-x86.
- Trapflag gets strict priority over hardware IRQs.
- Trapflag support for the dynamic core.
- Add dummy TRx handling.
- Fix a few rarely used character functions.
- Improve auto cycle guessing code.
- Improve and extend the joystick support.
- Add autofire support.
- Improve the mapper so you can map keys to the joystick and vice versa.
- A few game specific video card fixes.
- Fix some 64 bit cpu bugs.
- Add support for certain cdrom detection schemes.
- Improve HSG/Red Book support.
- Improve MSCDEX.
- Improve dynamic core support under intel macs.
- Add basic support for clipper programs.
- Add support for different keyboard layouts.
- Add auto core guessing.
- Fix a few flags bugs.
- Fix a few small cpu bugs.
- Improve soundblaster detection rate by various programs.
- Improve EMS emulation. (allow mapping of non standard regions)
- Improve keyboard input codes on various OS-es.
- Fix problems with filenames having stackdata in them.
- Changed a few basic operations in DOSBox so they take emulated time.
- Improve dos ioctl functions.
- Extend cpu core so they are capable of detecting and raising a few
more exception types.
- Improve DOS functions when dealing with virtual drive.
- Improve FAT drives.
- Better handling of volume-labels in file functions.
- Image disk cycling capability. (prompt)
- Try to reduce the impact of using an analog joystick.
- Several measures to avoid code invalidation on certain types
of self modification in the dynamic core.
- Add dynamic core memory function inlining.
- A few small mouse improvements. (some games are using things they
shouldn't)
- Add nullmodem emulation.(h-a-l-9000)
- Some small cga and hercules fixes.
- Add more scalers (hq2x/hq3x/sai). (Kronuz)
- Change configuration file loading support. It now supports
multiple configuration files.
- Make dynamic core capable of running some win32s programs.
- Fix and add some rare soundblaster modes. (Srecko)
- Better soundblaster mixer controls. (Srecko)
- Make soundblaster installation under windows much easier.
- Add device control channel handling.
- GEMMIS support (ems under windows).
- Support more colours in win 3. (vasyl)
- Don't show unmounted drives in windows filemanager.
- Fix some bugs in the int13 handler.
- Simulate some side-effects of bios interrupt handlers on flags.
- Add IPX functions needed by netbios.
- Make ports take emulated time.
- Tabcompletion is now aware of the CD command.
- Add support for the dac pel mask.
- Fixes to hercules emulation, better detection and bank switching.
- Fixes to tandy emulation, 640x200x16 mode and different sizes bank.
- EGA/VGA memory changes detection for faster rendering.
- Gus 16 bit fixes.
- Many timer improvements.
- Some pcjr fixes.
- Some booter fixes.
- Many small fixes.
0.65
- Fixed FAT writing.
- Added some more missing DOS functions.
- Improved PIC so that it actually honours irq 2/9.
- Improved intelligent MPU-401 mode so that more games work with it.
- Some mouse fixes.
- Changed DMA transfers a bit so they bypass the paging tables.
- Added S3 XGA functionality.
- Improved paging so that read and write faults are handled differently.
- Rewrote exception handling a bit (no exception 0x0B with dos4gw anymore).
- Added IO exceptions in all but the dynamic core.
- Some ems improvements.
- Added midi-device selection code for the windows hosts.
- Fix crashes/segfaults related to the disabling of the pcspeaker.
- Added some more FILES=XX detection tricks.
- Fixed some vga detection schemes.
- Fixed screenshot corruption when using -noconsole in a read-only directory.
- Fix wrong scaled screenshots.
- Added some hidden file functions when using diskimages. (helps with cdrom
detection schemes)
- Fixed a bug in the mixer code, that muted the music in certain games.
- Added an assembly fpu core.
- Made the shell more flexible for batch files.
- Check for unaligned memory access fixes hangups on ARM processors.
- Some 64 bit fixes.
- Added code to change configuration at runtime.
- Improved ADPCM emulation.
- Fixed a few cpu instructions.
- Always report vesa 2.0 and fix some colour issues with vesa games.
- Fix video mode 0x06 and 0x0a.
- Improvements to the joystick emulation. 4 buttons are supported as well.
- Add VCPI emulation for Origin games.
- Fixed a lot of things in the boot code. Most booters work now.
- Lots of improvements to the IPX emulation.
- Rewritten modem emulation. Should work with more games.
- Improvements to the dos memory management routines.
- Add UMB (upper memory blocks) support.
- Emulate the pause key.
- Improve Composite CGA mode emulation.
- Lots of vga compatibility changes.
- Improved support for chained video modes.
- Improved mode and palette handling in cga modes.
- Mount accepts ~ now.
- Added a few of the EGA RIL functions.
- Added TandyDAC emulation.
- OS/2 support.
- Improved and speed up the dynamic cpu core.
- Fix some errors in the CD-ROM emulation layer.
- Added an automatic work-around for some graphics chipsets.
- Add PCjr support.
- Allow mousedriver to be replaced. Fixes a few games that come with their
own (internal) driver.
- Improved dynamic cpu core so it can handle pagefaults and some obscure
types of self-modifying code.
- Added -noautoexec switch to skip the contents of [autoexec] in the
configuration file.
- Improved v86 mode emulation (mainly for Strike Commander).
- Improved timer behavior.
- Improved extended keyboard support.
- Enhanced and added several DOS tables.
- Made core_full endian safe.
- Made pagefaults endian safe.
- Add support for moviecapturing
- Add support for 15/16/32 bit videomodes.
- Add some more VESA modi (4 bit).
- Add 1024x768 output.
- Changed screenrendering so it only draws changes to the screen.
- Allow remapping of the EMS page when the dma transfer was started from
the page frame
- Made EMS and DMA work together when playing from a mapped memory page.
- Renamed several configuration options, so that they are unique.
- Merged mpu and intelligent into one option.
- Merged fullfixed and fullresolution.
- Extended keys should be handled better.
- F11 and F12 work.
- Compilation fixes for various platforms.
- Fix a few crashes when giving bad input.
- Removed interp2x and added few new scalers.
- Reintroduce the lockfree mouse. (autolock=false)
- Add a larger cache for the dynamic cpu core.
- Improved soundblaster DSP, so it gets detected by creative tools.
- Lots of bugfixes.
- Even more bugfixes.
0.63
- Fixed crash with keymapper (ctrl-f1) and output=surface.
- Added unmounting.
- Fixed multiple issues with drive labels.
- Fixed most if not all FILES=XX problems.
- Added redirection in the shell.
- Fixed crashes with subst.
- Fixed multiple crashes with the drive images support.
- Added a missing fpu instruction.
- Fixed some cpu and fpu instructions.
- Fixed a small bug related to font loading.
- Rewrote the devices support.
- Added capslock/numlock checks on startup.
- Fixed wave writing.
- A few internal DOS fixes.
- Timer fixes for the hybrid loader.
- Some small soundblaster fixes.
- The drive cache can now be cleared by a keycombo. (CTRL-F4)
- A few keyboard fixes.
- Compilation fixes on various platforms.
- Quite some debugger improvements.
- Fixed dir only showing files after the first run on cdrom drives.
- Added some cdrom detection checks.
- Enabled insert in the shell. (Easier editing of commands)
- Changed order in which executables appear with tab-completion.
- Fixed some issues with raw opl recording and using a slightly different
format
0.62
- Added blinking support in the shell and some color fixes.
- Fixed commandline parsing when .bat files involved (fixes -exit)
- Fixed issues with tabs in commandline not being processed correctly.
- Cleaned/improved shutdown sequence.
- Added some more bios functions (wait and delay functions).
- Made our XMS driver conform the specs better. (c2woody)
- Added support for some more ems functions.
- Added intelligent mpu401 emulation. (Srecko)
- Added soundblaster 16 emulation.
- Rewrote GUS emulation to sound more authentic.
- Improved pc speaker emulation.
- Added an internal (programmable) mixer.
- Added support a few soundblaster/adlib detection routines.
- Fixed lot's of bugs related to DMA transfers.
- Added interpolating prebuffering mixer routines.
- Added recording of OPL commands and raw midi.
- Fixed some bugs with the wave recording.
- Changed sensitivity settings of the mouse.
- Added ps2 mouse-emulation in bios interrupts (c2woody).
- Fixed some bugs with mouse emulation limits.
- Fixed a bug with an unterminated string in the drivelabel.
- Changed file search routines a bit to be more compatible.
- Added support for attribute-searching with fcb's.
- Added basic SDA.
- Added TPA and DIB.
- Added Lot's of missing dos tables (c2woody).
- Changed psp and dta functions to use dta.
- Returned filename in ds:dx in create-random-file (c2woody).
- Fixed a bug with date and time used on open files.
- Some mscdex fixes.
- Added the -version switch, which makes dosbox report its version.
- Added a keymapper.
- Added basic IPX emulation.
- Added cdrom iso support and floppy images support.
- Added the possibility to boot another dos version.
- Added Serial passthrough support (win32 only).
- Added the possibility to pause dosbox.
- Changed OpenGL so that it is initialized only when used.
- Make dosbox run at higher priority when active and lower when inactive.
- Added direct draw output support (win32 only).
- Added current running program to title bar.
- Rewrote video emulation to support new scalers.
- Added new graphics scalers like advmame3x,tv2x.
- Added a support for a few anti-debugger tricks.
- Improved the handling of the tab-key.
- Improved support for the numeric keyboard.
- Fixed a few cpu opcodes.
- Added cpu core simple (for lowerend machines)
- Fixed some nasty bugs in the dynamic cpu core.
- Added a few (rarely used) fpu opcodes.
- Fixed various issues with GCC 3.4.
- Many internal timer improvements (PIT and PIC).
- Added some more PIC commands (c2woody).
- Added BCD counting to the timers.
- Fix some vesa functions.
- Add some basic support for 132x25 and 132x45 textmodes.
- Improved Tandy emulation a lot.
- Lowered cpu usage when dosbox is idle.
- Allow virtualisation of some basic IO-ports (c2woody).
0.61
- Added a beta dynamic cpu for x86 hosts (very unstable)
- Added opengl and hardware overlay display output
- Rewrote the vga screen updates to go in lines
- Added paging and v86 support to cpu emulation
- Added a config option to simulate a certain type of machine
- Added hercules graphics emulation
- Made CGA/TANDY modes more compatible
- Updated textmode drawing routines to support blinking colors
- Fixed VESA set page function that was documented wrong
- Fixed some wrongly emulated cpu opcodes.
- improved exception handling
- debugger: fixes; logging of gdt,lgt,idt, new commands(Fizzban)
- fixed some mscdex issues (drive letter header error, added get directory entry)
- added/fixed some bios funcs
- added some rarely used xms functions (thanks c2woody!)
- implemented GUS emulation
- Added 16-bit DMA support (for GUS and eventually SB16)
- Fixed many small bugs in filehandling routines
- Many small FPU fixes (c2woody/Fizzban)
- Some keyboard improvements (pharlab games)
- Some Timer and cmos/rtc fixes (Mirek/Srecko/Others)
- Lot's of mouse fixes (Help from various people)
- Enabled internal modem
- Made the DOS parsing routines a bit more flexible
- Added Subst (Srecko)
- Added cdrom ioctl support for linux (prompt)
- Many internal DOS fixes: memory/files/datastructures.
- Got some help from c2woody in allowing more than 1 irq being served
- Disabled DPMI (not needed anymore. DOSBox handles almost every extender)
- Search configfile in $HOME directory if none present in current directory
- Added another way to switch to protected mode. (Thanks Morten Eriksen!)
- Fixed some odd badly documented behaviour with PSP/DTA
- Added some warnings on opening of readonly files in writemode(DOS default).
- Many shell enhancements
- Fixed a win32 specific bug dealing with filenames starting with a "."
- Fixed some bugs with the directory structure: not found/can't save errors
0.60
- rewrote memory system for future paging support
- fixed several EMS and XMS bugs and rewrite for new memory system
- added some support for tandy video modes
- added MAME Tandy 3 voice emulation
- added MAME CMS/GameBlaster emulation
- added serial port emulation with virtual tcp/ip modem (somewhat buggy)
- sound blaster emulation is now sb pro 2.0 compatible
- added basic support for 32-bit protected mode
- VGA now tries to emulate an S3 Trio 64 card with 2 MB
- VESA 2.0 support for some 256 color modes
- rewrote large piece of video bios code for better compatibility
- added support for the not inheritance flags.
- created functions for creating child psp.
- updated errorcodes of findfirst (thanks Mirek!)
- rewrote loggingsystem to generate less warnings
- added dos protected mode interface (dpmi)
- added cdrom label support
- improved cdrom audio playing
- fixed and improved directory cache
- debugger shows selector- and cpu mode info
- added SELINFO (selector information) command to debugger
- added reference counting for dos files
- added tab-completion
- added basic fpu support.
- fixed several bugs with case sensitive filesystems.
- added more shell commands and improved their behaviour.
- mouse improvements.
- real time clock improvements.
- DMA fixes.
- Improved .BAT file support.
0.58
- fixed date and time issues with fcbs
- added more commands to the internal Shell
- corrected config system when an old configfile was used
- fixed cga put and get pixel
- fixed some vga register getting reset to wrong values
- improved support for foreign keyboards
- improved joystick support
- made dosbox multithreaded again
- lot's of soundblaster fixes
- dma fixes
- cdrom support
- midi support
- added scale2x
- reenabled screenshot support
- joystick support fixes
- mouse improvements
- support for writing wavefiles
- added directory cache and longfilename support (longfilenames will be mangled)
- mouse fixes
- date and time updates at z:\
- added (partial) direct disk support. (works probably only if directory is mounted under a:\)
- added support for env variables. (must be set before starting dosbox: DOSBOX_SECTION_PROPERTY=value
like DOSBOX_SBLASTER_IRQ=1)
0.57
- added support for command /C
- fixed all fcb-write functions
- fixed fcb-parseline
- added debugger under linux/freebsd
- added debugger memory breakpoints and autolog function (heavy debug)
- added loadfix.com program that eats up memory (default 64kb)
Usage : loadfix [-option] [programname] [parameters]...
Example: loadfix mm2 (Allocates 64kb and starts executable mm2)
loadfix -32 mm2 (Allocates 32kb and starts executable mm2)
loadfix -128 (Allocates 128kb)
loadfix -f (frees all previous allocated memory)
- added echoing of characters for input function
- added support for backspace for input function
- added partial support for int10:01 set cursortype
- fixed most of the problems/bugs with character input.
- fixed allocationinfo call.(darksun series)
- improved dos support for non-existent functions
- Split screen support
- prefix 66 67 support
- rewrote timingscheme so 1000 hz timers don't cause problems anymore
- update adlib emulation
- fixed some issues with the mouse (double clicks and visible when it shouldn't be)
- improved mouse behaviour (mickey/pixel rate) and detection routines.
- basic ansi.sys support
- Disney sound system emulation
- rewrote upcase/lowcase functions so they work fine with gcc3.2
- SHELL: added rename and delete
- added support for command /C. Fixed crashes in the shell
- fixed various bugs when exiting dosbox
- fixed a bug in XMS
- fixed a bug with the joystick when pressing a button
- create nicer configfiles.
- bios_disk function improved.
- trapflag support
- improved vertical retrace timing.
- PIT Timer improvements and many bug fixes
- Many many bug fixes to the DOS subsystem
- Support for memory allocation strategy
- rewrote cpu mainloop to act more like a real cpu
0.56
- added support for a configclass/configfile
- added support for writing out the configclass into a configfile
- removed the language file and made it internal
- added support for writing the language file (will override the internal one)
- improved mousesupport
- updated readme
- support for screenshots
- some cpu-bug fixes
- dma changes
- Real Sound support
- EMM fixes and new functions.
- VGA fixes
- new wildcompare
- support for size and disktype at mount.
- added new debugger functionalities: start/trace into INTs, write processor status log,
step over rep and loop instructions, breakpoint support without using INT 03 (heavy debugging switch)
- Added more cpu instructions and changed the string operations.
- Added classes for most of the internal dos structures.
- Rewrote most of the fcb calls to use normal dos calls.
0.55
- fixed the errors/warnings in prefix_66.h and prefix_66_of.h (decimal too large becoming unsigned).
- fixed compilation error on FreeBSD when #disable_joystick was defined
- int10_writechar has been updated to move the cursor position.
- changed the basedir routines to use the current working dir instead of argv[0]. This will fix and brake things :)
- illegal command, now displays the command
- wildcmp updated to be case insensitive
- added fcb:open,close,findfirst, findnext.
- fixed rename in drive_local
- added new features to the debugger: breakpoint support / data view / command line
- partial support of list of lists (dos info block)
- full emm 3.2 support
- partial emm 4.0 support
- fixes to graphics core fonts (text in sierra games is now correct)
- improved support for user mousehandlers
- fixed EGA graphics
- fixed VGA graphics
- fixed write with size 0
- changed memory management.
- fixed and cleaned up the cpu flags.
- changed interrupt handler.
- speeded up the graphics.
- speeded up the cpu-core
- changed dma
- improved dma streams from emm memory
- added some cga videomodes
- added more functions to the keyboard handler
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