changelog

CHANGELOG

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+  - 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