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