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.\" Hey, EMACS: -*- nroff -*-
.TH DOSBOX-X 1 "Feb 28, 2021"
.\" Please adjust this date whenever revising the manpage.
.SH NAME
dosbox-x \- an x86/DOS and PC98 emulator with sound/graphics
.SH SYNOPSIS
.B dosbox-x
.B [OPTIONS]
.BI [NAME]
.SH DESCRIPTION
This manual page briefly documents
.BR "dosbox-x" ", an x86/DOS and PC98 emulator."
.LP
.RB "Options are listed below. Depending on the option, one or more may be specified."
.LP
.RB "The optional " NAME " argument should be a DOS executable or a"
directory. If it is a dos executable (.com .exe .bat) the program will
run automatically. If it is a directory, a DOS session will run with
the directory specified mounted as the C:\\ drive.
.R If the dos executable requires parameters, enclose the command and it's parameters in quotes.
.LP
.RI "For an introduction type " INTRO
.RB "inside " dosbox-x .
.SH OPTIONS
A summary of available options.
.TP
.BR \-? " or " \-h " or " \-help
.R "Display the help screen and exit."
.TP
.BR \-v " or " \-ver " or " \-version
.R "Display the version information and exit."
.TP
.BR \-fullscreen " or " \-fs
.RB "Start " dosbox-x " in fullscreen mode."
.TP
.BI \-conf " configfile"
.RB "Start " dosbox-x " with the options specified in "
.IR configfile ". This file has also has a section called "
.BR [autoexec] " in which you can put commands you "
.R wish to execute on startup. Multiple
.BI \-conf "
options with
.IR configfiles " can be specified."
.TP
.BI "\-editconf ["editor ]
.R Open the default configuration file in a text editor. If no editor name
is given, then use the program from the EDITOR environment variable.
.TP
.B \-userconf
Load the configuration file located in ~/.config/dosbox-x. Can be combined with
.RB "the " \-conf " option."
.TP
.B \-printconf
Prints the location of the default configuration file and exit.
.TP
.B \-eraseconf, \-resetconf
Removes the default configuration file and exit.
.TP
.B \-erasemapper, \-resetmapper
Removes the mapperfile configured in the clean default configuration file and exit.
.TP
.BI \-opencaptures " program"
.RI "Calls " program " with as first parameter the location of the captures folder and exit."
.TP
.BI \-opensaves " program"
.RI "Calls " program " with as first parameter the location of the saves folder and exit."
.TP
.BR \-startui " or " \-startgui " or " \-starttool
.R Start DOSBox-X with GUI configuration tool.
.TP
.B \-startmapper
.RB "Start the internal keymapper on startup of " dosbox-x ". You can use it to change the keys " dosbox-x " uses."
.TP
.BR \-nogui " or " \-nomenu
.R Do not show the GUI menu bar when in windowed mode.
.TP
.B \-showcycles
.R Show cycles count (FPS) in the title.
.TP
.B \-showrt
.R Show emulation speed relative to realtime in the title.
.TP
.BI \-socket " socketnumber"
.RI "Passes the socket number " socketnumber " to the nullmodem emulation. See WIKI for details."
.TP
.BI \-savedir " path"
.R Set path for the save slots.
.TP
.BI \-defaultdir " path"
.R Set the default working path for DOSBox-X.
.TP
.B \-defaultconf
.R Use the default config settings for DOSBox-X.
.TP
.B \-defaultmapper
.R Use the default key mappings for DOSBox-X.
.TP
.B \-data-host-forced
.R Force synchronization of date and time with the host.
.TP
.BI \-lang " langfile"
.RB "Start " dosbox-x " with the language specified in "
.IR langfile .
.TP
.B \-nodpiaware
.R Ignore (do not signal) Windows DPI awareness.
.TP
.B \-securemode
.R Enable secure mode, which is meant to prevent a DOS program potentially gaining access to
files outside directories mounted in the [autoexec] section of the config file. It does this
.R by running
.B Z:\\\CONFIG.COM \-securemode
.R after completing the [autoexec] section
.R (which in turn disables any changes to how the drives are mounted
.RB "inside " dosbox ).
.RB "It also disables various other "CONFIG.COM
.R options that could be exploited.
.TP
.B \-noconfig
Skips the [config] section of the loaded configuration file. This is equivalent to CONFIG.SYS in DOS.
.TP
.B \-noautoexec
Skips the [autoexec] section of the loaded configuration file. This is equivalent to AUTOEXEC.BAT in DOS.
.TP
.B \-exit
.BR "dosbox-x" " will close itself when the DOS program specified by "NAME " ends."
.TP
.B \-silent
.R Run DOSBox-X silently and exit after executing the [autoexec] section of the loaded config file.
.TP
.BI \-c " command"
.RI "Runs the specified " command " before running "
.BR NAME .
.RI "Multiple commands can be specified. Each " command " should start with "
.BR \-c " though. A command can be:"
an Internal Program, a DOS command or an executable on a mounted drive.
.R If the command requires parameters, enclose the command and it's parameters in quotes.
.TP
.BI \-set " section property=value"
.R Set the config option (override any config file). If the property contains spaces, ensure to enclose the string in quotes.
.R The section is the name of a dosbox-x config section such as [video] without the brackets.
.RB "Multiple "\-set " commands may be specified."
.R If a property is unique, the section may be ommitted. e.g.
.B \-set dosbox machine=hercules
.R is equivalent to
.B \-set machine=hercules
.TP
.BI \-time-limit " n"
.RI "Kill the emulator after "'n' " seconds."
.TP
.B \-fastlaunch
.R Fast launch mode (skip the BIOS logo and welcome banner).
.TP
.B \-helpdebug
.R Show debug-related options and exit.
.TP
.BI \-scaler " scaler"
.RI "Uses the graphical scaler specified by " scaler ". See the configuration"
file for the available scalers
.TP
.BI \-forcescaler " scaler"
.RB "Similar to the " \-scaler " parameter, but tries to force usage of"
the specified scaler even if it might not fit.
.SH "INTERNAL COMMAND.COM COMMANDS"
.B dosbox-x
Supports most of the internal DOS commands found in COMMAND.COM. Help text is integrated for these commands in DOSBox-X, and will not be duplicated here.
An explanation of these commands can also be found on the DOSBox-X wiki on the Supported Commands page.
.TP
.RS
.IP "- ALIAS, ATTRIB, BREAK, CALL, CD/CDDIR, CHCP, CHOICE, CLS, COPY"
.IP "- COUNTRY, CTTY, DATE, DEL/ERASE, DELTREE, ECHO, EXIT, DIR, FOR"
.IP "- GOTO, HELP, IF, LFNFOR, LH/LOADHIGH, MD/MKDIR, MORE, PATH"
.IP "- PAUSE, PROMPT, RD/RMDIR, REM, REN/RENAME, SET, SHIFT, SUBST"
.IP "- TIME, TRUENAME, TYPE, VER, VERIFY, VOL"
.RE
.SH "OTHER INTERNAL COMMANDS"
These are internal DOSBox-X commands that are are not part of DOS. They are documented on the DOSBox-X wiki on the Supported Commands page.
.TP
.RS
.IP "- DEBUGBOX (only on debug enabled builds)"
.IP "- DX-CAPTURE"
.RE
.SH "EXTERNAL DOS COMMANDS"
These are external DOS commands located on the emulated Z:\ drive.
.TP
.RS
.IP "- APPEND, BUFFERS, COMMAND, DEBUG, DEVICE, EDIT, FCBS, FIND"
.IP "- KEYB, LABEL, LASTDRIV, LOADFIX, MEM, MODE, MOVE, SORT"
.IP "- TREE, XCOPY
.RE
.SH "OTHER EXTERNAL COMMANDS"
In addition, the following extra commands are available on the emulated Z:\ drive:
.TP
.RS
.IP "- 25, 28, 50, 4DOS, A20GATE, ADDKEY, AUTOTYPE, BOOT, CAPMOUSE"
.IP "- CDPLAY, CFGTOOL, CONFIG, CWSDPMI, DOS32A, DOS4GW, DOSIDLE"
.IP "- DOSMID, DSXMENU, FLAGSAVE, HEXMEM16, HEXMEM32, IMGMAKE"
.IP "- IMGMOUNT, INTRO, LOADROM, LS, MIXER, MOUNT, MOUSE, MPXPLAY"
.IP "- RE-DOS, RESCAN, SETCOLOR, START, VESAMOED, VFRCRATE
.RE
The following external commands are only available on debug enabled builds:
.TP
.RS
.IP "- BIOSTEST, NMITEST, INT2FDBG"
.RE
.SH "SPECIAL KEYS"
.TP 12m
.IP F12\-F
Switch between fullscreen and window mode.
.IP F12-R
Reset the virtual machine inside DOSBox-X
.IP F12-B
Reboot the emulated DOS (integrated DOS or guest DOS) inside DOSBox-X.
.IP F12-C
Start DOSBox-X’s graphical configuration tool.
.IP F12-M
Start DOSBox-X’s mapper editor.
.IP F12-Esc
Show/hide DOSBox-X’s drop-down menu bar.
.IP F12-Del
Send the selected special key combination (Ctrl+Alt+Del by default) to the guest system.
.IP F12-{+}
Increase the sound volume of DOSBox-X’s emulated DOS.
.IP F12-{-}
Decrease the sound volume of DOSBox-X’s emulated DOS.
.IP F12-]
Increase the emulated DOS’s current speed relative to real-time.
.IP F12-[
Decrease the emulated DOS’s current speed relative to real-time.
.IP F12-{=}
Increase DOSBox-X’s emulation CPU cycles.
.IP F12-{-}
Decrease DOSBox-X’s emulation CPU cycles.
.IP F12-Up
Increase the font size for the TrueType font (TTF) output.
.IP F12-Down
Decrease the font size for the TrueType font (TTF) output.
.IP F12-Left
Reset the emulated DOS’s current CPU speed to the normal speed.
.IP F12-Right
Toggle DOSBox-X’s speed lock.
.IP F12-D
Swap between mounted CD images.
.IP F12-O
Swap between mounted floppy images.
.IP F12-P
Take a screenshot of the current screen in PNG format.
.IP F12-I
Start/Stop capturing an AVI video of the current session.
.IP F12-W
Start/Stop recording a WAV audio of the current session.
Alt+Pause
Start DOSBox-X’s Debugger.
.IP F12-[,]
Select the previous save slot to save to or load from.
.IP F12-[.]
Select the next save slot to save to or load from.
.IP F12-S
Save current state to the selected save slot.
.IP F12-L
Load the state from the selected save slot.
.IP F12-Pause
Pause emulation (press again to continue).
.IP Ctrl+F5
Copy all text on the DOS screen to the host clipboard.
.IP Ctrl+F6
Paste the text in the host clipboard to the DOS screen.
.IP Ctrl+F9
Exit DOSBox-X.
.IP Ctrl+F10
Capture the mouse for use with the emulated DOS.
.PP
These are the default keybindings. They can be changed in the keymapper.
.PP
Saved/recorded files can be found in current_directory/capture
(can be changed in the configfile).
.RB "The directory has to exist prior to starting " dosbox-x " else nothing"
gets saved/recorded !
.PP
.BR "Note: " "Once you increase your " dosbox-x " cycles beyond your computer's maximum
capacity, it will produce the same effect as slowing down the emulation.
This maximum will vary from computer to computer, there is no standard.
.SH ENVIRONMENT
Any configuration option can be overridden using an environment variable.
.RB "Environment variables starting with prefix " DOSBOX " are processed and
interpreted as follows:
.B DOSBOX_SECTIONNAME_PROPERTYNAME=value
.PP
.R For example, you can override render aspect this way:
.PP
.B $ DOSBOX_RENDER_ASPECT=false dosbox-x
.SH BUGS
.RI "To report a bug, please visit " https://github.com/joncampbell123/dosbox-x/issues
.SH "SEE ALSO"
You can find a wiki dedicated to DOSBox-X at https://dosbox-x.com/wiki
.SH AUTHOR
.RI "DOSBox-X project is maintained by the DOSBox-X Team (" https://dosbox-x.com/ ")
This manual page was originally written by Peter Veenstra <H.P.Veenstra@student.rug.nl> and James Oakley <jfunk@funktronics.ca>,
for the Debian system (but may be used by others). Updated by the DOSBox-X team for DOSBox-X.
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