forked from KolibriOS/kolibrios
204 lines
5.4 KiB
Groff
204 lines
5.4 KiB
Groff
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.Dd July 26, 2014
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.Dt DGEN 1
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.Os
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.Sh NAME
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.Nm dgen
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.Nd Sega Genesis/Mega Drive emulator
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.Sh SYNOPSIS
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.Nm dgen
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.Op Fl Pfhmv
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.Op Fl R Ar (J|U|E)
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.Op Fl H Ar HZ
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.Op Fl D Ar DEMONAME
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.Op Fl d Ar DEMONAME
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.Op Fl n Ar USEC
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.Op Fl p Ar CODE,CODE...
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.Op Fl r Ar RCFILE
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.Op Fl X Ar XFACT
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.Op Fl Y Ar YFACT
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.Op Fl S Ar FACT
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.Op Fl g Ar (0|1)
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.Op Fl G Ar XxY
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.Op Fl s Ar SLOT
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.Ar [romname [...]]
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.Sh DESCRIPTION
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The ROM image in the file
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.Ar romname
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is executed, as emulated on a Sega Genesis or Mega Drive running in 60Hz NTSC
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mode (unless the
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.Fl P
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option is specified, in which case 50Hz PAL mode is used).
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.Ar romname
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should be in raw binary or SMD format, and may be compressed with
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.Xr gzip 1 ,
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.Xr zip 1 , or
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.Xr bzip2 1 .
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.Pp
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When
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.Ar romname
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isn't specified, DGen starts without a ROM. It can be loaded later from the
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prompt. When more than a single
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.Ar romname
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is specified, they are executed sequentially.
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.Pp
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The options are as follows:
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.Bl -tag -width Fl
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.It Fl H Ar HZ
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Use a custom frame rate, can be used to accelerate or slow down emulation.
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.It Fl P
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Emulate 50Hz PAL mode (as used in European models of the Mega Drive).
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.It Fl R Ar (J|U|E)
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Emulator region. Without this option, DGen uses the first region mentioned in
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the ROM header. It should be combined with
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.Fl P
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for PAL mode. See below.
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.Bl -tag -width Fl
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.It (none)
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Autodetect (NTSC, 60Hz)
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.It Fl P
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Autodetect (PAL, 50Hz)
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.It Fl R Ar J
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Japan (NTSC, 60Hz)
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.It Fl R Ar J Fl P
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Japan (PAL, 50Hz)
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.It Fl R Ar E
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Europe (NTSC, 60Hz, music will certainly play too fast)
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.It Fl R Ar E Fl P
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Europe (PAL, 50Hz)
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.It Fl R Ar U
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America (NTSC, 60Hz)
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.It Fl R Ar U Fl P
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Same as
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.Fl R Ar E Fl P
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.El
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.It Fl f
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Run fullscreen, if possible.
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.It Fl h
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Show a brief synopsis of all options.
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.It Fl m
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MinGW only. This option prevents DGen from detaching from its control console.
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.It Fl v
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Show the version number, and exit.
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.It Fl D Ar DEMONAME
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Play back a demo recorded with the
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.Fl d
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option.
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.It Fl d Ar DEMONAME
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Record a demo of the program running, which can be later replayed with the
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.Fl D
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switch.
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.It Fl n Ar USEC
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Sleep for a number of microseconds after every frame, to give time to other
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processes.
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.It Fl p Ar CODE,CODE...
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Modify the ROM image in memory, using Game Genie or Hex style codes. Game
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Genie codes are of the form
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.Ar ABCD-EFGH
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and Hex codes are in the form
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.Ar 123456:ABCD .
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To specify more than one code, separate them with commas (do
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.Ar not
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use spaces).
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.It Fl r Ar RCFILE
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Parse another rc file after /tmp0/1/.dgen/dgenrc. Values in the specified file
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override those in the preceding files.
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.It Fl X Ar XFACT
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Scale the window XFACT times in the X direction. XFACT must be a positive
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integer.
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.It Fl Y Ar YFACT
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Scale the window YFACT times in the Y direction. YFACT must be a positive
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integer.
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.It Fl S Ar FACT
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Scale the window FACT times in both directions. FACT must be a positive integer.
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.It Fl g Ar (0|1)
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Enable/disable OpenGL (if compiled-in).
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.It Fl G Ar XxY
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Desired window size (e.g. 640x480, 800x600, etc.)
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.It Fl s Ar SLOT
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Load the saved state from the given slot at startup (0-9)
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.El
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.Sh INTERACTIVE PROMPT
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A minimalist interactive prompt inspired from
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.Xr vi 1
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can be used to perform various operations described below. It is triggered by
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pressing colon (:), the default key. Command-line editing, history and
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completion are supported.
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.Ss Commands
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.Bl -tag -width xxxx
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.It {quit, exit, q}
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Quit, or load the next
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.Ar romname
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from command-line, if any.
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.It {load, open, plug, o} Ar filename
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Load a given ROM
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.Ar filename .
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.It {unload, close, unplug}
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Unload the current ROM.
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.It config_load Ar filename
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Load configuration from file
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.Ar filename .
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.It config_save Ar filename
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Save current configuration to file
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.Ar filename .
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.It reset
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Genesis reset.
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.It {ctv_push, ctv_pop, ctv_none}
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Manage the stack of Crap TV filters (if compiled-in).
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.It calibrate Ar number
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Interactive calibration of the specified gamepad (1 or 2). If
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.Ar number
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isn't specified, default to 1.
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.It unbind Ar binding [...]
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Remove specified bindings (variables prefixed with "bind_").
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See
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.Xr dgenrc 5
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for more information about them.
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.It vgmdump start Ar filename
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.It vgmdump stop
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Manages VGM dumping/logging. If the second argument is
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.Ar start
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VGM dumping will be started at the path specified by the third argument.
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If the second argument is
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.Ar stop
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VGM dumping will be stopped and the dump finalized.
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.El
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.Ss Variables
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All configuration variables from
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.Xr dgenrc 5
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can be displayed and modified interactively, with immediate effect.
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.Bl -tag -width xxxx
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.It {int_name, bool_name, key_name, joy_name, ...} {value}
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Affect
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.Ar value
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to variable
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.Ar name .
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.It {int_name, bool_name, key_name, joy_name, ...}
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Display current value for variable
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.Ar name .
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.El
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.Sh FILES
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.Bl -tag -width /tmp0/1/.dgen/dgen/saves/* -compact
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.It Pa /tmp0/1/.dgen/dgenrc
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Contains user settings for the emulator.
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.It Pa /tmp0/1/.dgen/dgenrc.auto
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Generated file containing saved user settings.
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.It Pa /tmp0/1/.dgen/saves/*
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Save states generated by the emulator.
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.It Pa /tmp0/1/.dgen/ram/*
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Battery-backup RAM images, generated by the emulator for ROMs with save RAM.
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.It Pa /tmp0/1/.dgen/screenshots/*
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Screenshots are generated there.
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.It Pa /tmp0/1/.dgen/roms/*
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ROMs default search path.
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.It Pa /tmp0/1/.dgen/demos/*
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Demos default search path.
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.El
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.Sh AUTHORS
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This manual page was written by
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.An Joe Groff Aq joe@pknet.com .
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.An Updated by zamaz Aq zamaz@users.sourceforge.net .
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.Sh BUGS
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There are known emulation bugs, see BUGS in DGen source package.
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.Pp
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.An Report bugs to Aq http://sourceforge.net/projects/dgen/ .
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