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Using the program
-----------------
mame [name of the game to run] [options]
For example:
mame mspacman -nosound
...will run Ms Pac Man without sound
Configuration options
---------------------
-createconfig / -cc
Creates the default MAME.INI file. All the following configuration
options can be permanently changed by editing this configuration file.
-showconfig / -sc
Displays the current configuration settings. If you route this to a
file, you can use it as an INI file. For example, the command:
mame -showconfig >mame.ini
is equivalent to -createconfig.
-showusage / -su
Displays a summary of all the command line options. For options that
are not mentioned here, the short summary given by "mame -showusage" is
usually sufficient.
-[no]readconfig / -[no]rc
Enables or disables the reading of the config files. When enabled
(which is the default), MAME reads the following config files in order:
- MAME.INI
- $MY_MAME.INI (i.e. if MAME was renamed MAME060.EXE, MAME
parses MAME060.INI here)
- MAMED.INI (if this is a debug build, i.e. MAMED.EXE)
- VECTOR.INI (for vector games only)
- DRIVER.INI (based on the source filename of the driver)
- PARENT.INI (for clones only, may be called recursively)
- GAMENAME.INI
The settings in the later ini's override those in the earlier ini's.
So, for example, if you wanted to disable hardware stretch in the
vector games, you can create a VECTOR.INI with the "hwstretch 0" line
in it, and it will override whatever hwstretch value you have in your
MAME.INI.
-[no]verbose / -[no]v
Displays some diagnostic information at startup. IMPORTANT: when
reporting bugs, please run with mame -verbose and include the resulting
information. It can be very helpful in tracking down problems. The
default is off (-noverbose)
Windows path and directory options
----------------------------------
IMPORTANT: Please use the path, directory and file options ONLY in MAME.INI.
Otherwise, the outcome may be unpredictable and not consistent across releases.
-rompath / -rp
You can give a path (list of directories seperated by semicolons) of
directories to be searched for roms. The default is ROMS (that is, a
directory "roms" in the current directory).
-samplepath / -sp
You can give a path (list of directories seperated by semicolons) of
directories to be searched for samples. The default is SAMPLES (that
is, a directory "samples" in the current directory).
-inipath
You can give a path (list of directories seperated by semicolons) of
directories to be searched for INI-files. The default is .;ini (that
is, search in the current directory first, and then in the directory
"ini" in the current directory).
-cfg_directory
After running a game, MAME stores some user changeable settings into
cfg_directory/gamename.cfg. Additionally, on the first start of MAME a
cfg_directory/default.cfg is created. The default is CFG.
-nvram_directory
The original hardware of some games use non-volative ram chips to save
their configuration. The contents of these are saved into this
directory. The default is NVRAM.
-memcard_directory
The original hardware of some games supports so-called memory cards.
The contents of these are stored here. The default is MEMCARD.
-input_directory
Input recordings created by "-record" will be saved here and loaded by
"-playback". The default is INP.
-hiscore_directory
If there exists a file HISCORE.DAT in the MAME directory, highscores
may also be saved for games that do not have the original hardware to
support this. The quality of this feature depends on the accuracy of
the externally available file HISCORE.DAT. The default is HI.
-state_directory
MAME supports state saving for some games. These states will be saved
here. The default is STATE.
-artwork_directory
Some games used extra artwork not created by electical circuits. MAME
supports such artwork in PNG image format, located in this directory.
The default is ARTWORK.
-snapshot_directory
Screenshots will go here. The default is SNAP.
-diff_directory
Directory for hard drive image difference files. The default is DIFF.
-ctrlr_directory
This directory holds controller-specific input port mapping .ini files.
The default is CTRLR.
-history_file
The default is HISTORY.DAT. Modifying the default may not work at the
moment.
-mameinfo_file
The default is MAMEINFO.DAT. Modifying the default may not work at the
moment.
-cheat_file
The default is CHEAT.DAT. Modifying the default may not work at the
moment.
Windows video options
---------------------
-[no]autoframeskip / -[no]afs
Automatically determines the frameskip level while you're playing the
game, adjusting it constantly in a frantic attempt to keep the game
running at full speed. Turning this on overrides the value you have set
for -frameskip above. The default is ON (-autoframeskip).
-frameskip / -fs
Specifies the frameskip value. This is the number of frames out of
every 12 to drop when running. For example, if you say -frameskip 2,
then MAME will display 10 out of every 12 frames. By skipping those
frames, you may be able to get full speed in a game that requires more
horsepower than your computer has. The default value is -frameskip 0,
which skips no frames.
-[no]waitvsync
Waits for the refresh period on your computer's monitor to finish
before starting to draw video to your screen. If this option is off,
MAME will just draw to the screen at any old time, even in the middle
of a refresh cycle. This can cause "tearing" artifacts, where the top
portion of the screen is out of sync with the bottom portion. Tearing
is not noticeable on all games, and some people hate it more than
others. However, if you turn this option on, you will waste more of
your CPU cycles waiting for the proper time to draw, so you will see a
performance hit. The default is OFF (-nowaitvsync). This option
requires -ddraw.
-[no]triplebuffer / -[no]tb
Enables or disables "triple buffering". Normally, MAME just draws
directly to the screen, without any fancy buffering. But with this
option enabled, MAME creates three buffers to draw to, and cycles
between them in order. It attempts to keep things flowing such that one
buffer is currently displayed, the second buffer is waiting to be
displayed, and the third buffer is being drawn to. Unfortunately, due
to some DirectDraw issues, this doesn't always work out as well as it
should. This is still being investigated. The default is OFF
(-notriplebuffer). This option required -ddraw and -nowindow.
-[no]window
Run MAME in either in a window or full screen. The default is OFF
(-nowindow).
-[no]ddraw / -[no]dd
This is really just for testing. It disables the use of DirectDraw,
which removes a lot of the features of the video system (-triplebuffer,
-waitvsync, -resolution, -refresh, -switchres, -switchbpp, -resolution,
-hwstretch all won't work). It will generally run really slowly. If
anyone has a legitimate use for this option, we'd be curious to know.
The default is ON (-ddraw).
-[no]hwstretch / -[no]hws
MAME uses the hardware stretching abilities of modern graphic cards to
scale the game image to the requested resolution. Depending on the
quality of your graphic card and its drivers, this may be a fractional,
antialiased scaling (nice) or an integer, blocky scaling (not so nice).
In any case, you can disable this stretching altogether and let MAME do
the scaling in software, which is probably slower, though. The default
is ON (-hwstretch). Note: Vector games may actually look better with
"-nohws".
-cleanstretch [option] / -cs [option]
Stretch the image to integer ratios only. This may leave a black border
around the image in fullscreen mode. The options are:
none disable. This will cause artifacts when using
scanlines.
auto let the blitter decide. The d3d module will select
the best option.
full always stretch to integer ratios both horizontally
and vertically.
horizontal always stretch to integer ratios horizontally.
vertical always stretch to integer ratios vertically.
The default is AUTO (-cleanstretch auto). This option requires -ddraw
or -direct3d.
-resolution wxh[xd] / -r wxh[xd]
Specifies an exact resolution to run in. In full screen mode, MAME will
try to use the specific resolution you request. The width (w) and
height (h) are required; the color depth (d) is optional. If omitted or
set to 0, MAME will determine the mode auomatically. For example,
-resolution 640x480 will force 640x480 resolution, but MAME is free to
choose the color depth. Similarly, -resolution 0x0x32 will force 32-bit
color depth, but allows MAME to choose the resolution. The string
"auto" is also supported, and is equivalent to 0x0x0. In window mode,
this resolution is used as a maximum size for the window. The default
is auto (-resolution auto). This option requires -ddraw for full screen
resolution switching.
-refresh
Specifies a particular refresh rate to set your monitor to. If the
refresh rate is not found, or if this parameter is 0, the default
DirectDraw refresh rate is used. The default is -refresh 0. This option
requires -ddraw and -nowindow.
-[no]scanlines / -[no]sl
Enables the classic MAME "scanlines" effect. The default is OFF
(-noscanlines). This option requires -nohwstretch.
-[no]switchres
Enables resolution switching. This option is required for the
-resolution option to switch resolutions in full screen mode. On many
modern video cards with hardware stretching support, there is little
performance penalty at higher resolutions, so it is nice to be able to
get rid of the monitor resync time when you run in full screen mode.
This is also useful on LCD displays with a fixed resolution. The
default is ON (-switchres). This option requires -ddraw.
-[no]switchbpp
Enables color depth switching. This option is required for the
-resolution option to switch color depths in full screen mode. This
option is useful if you normally run at 16, 24, or 32 bit color depth
on your desktop, and want to keep that color depth when you run MAME.
The default is ON (-switchbpp). This option requires -ddraw.
-[no]maximize / -[no]max
Controls initial window size in windowed mode. If it is set on, the
window will initially stretch to the maximum supported size when you
start MAME. If it is turned off, the window will start out at the
smallest supported size. The default is ON (-maximize). This option
requires -window.
-[no]keepaspect / -[no]ka
Enables aspect ratio enforcement. When this option is on, the game's
proper aspect ratio (generally 4:3 or 3:4) is enforced, so you get the
game looking like it should. When running in a window with this option
on, you can only resize the window to the proper aspect ratio, unless
you are holding down the CONTROL key. By turning the option off, the
aspect ratio is allowed to float. In full screen mode, this means that
all games will stretch to the full screen size (even vertical games).
In window mode, it means that you can freely resize the window without
any constraints. The default is ON (-keepaspect).
-[no]matchrefresh
Enables refresh rate matching. When enabled, MAME will try to find the
closest refresh rate match that is greater than the game's refresh
rate. For example, if the game runs at 57fps, and you have 60, 70, 75Hz
refresh rates, MAME will choose 60Hz. If the game runs at 61fps, then
it will choose 70Hz. This is intended mainly for those who have tweaked
their video card's settings to provide carefully matched refresh rate
options. The default is OFF (-nomatchrefresh). This option requires
-ddraw and -nowindow.
-[no]syncrefresh
Enables speed throttling only to the refresh of your monitor. This
means that the game's actual refresh rate is ignored; however, the
sound code still attempts to keep up with the game's original refresh
rate, so you may encounter sound problems. Again, this is intended
mainly for those who have tweaked their video card's settings to
provide carefully matched refresh rate options. The default is OFF
(-nosyncrefresh). This option requires -ddraw.
-[no]throttle
Configures the default thottling setting. When throttling is on, MAME
attempts to keep the game running at the game's intended speed. When
throttling is off, MAME runs the game as fast as it can. The default is
ON (-throttle).
-full_screen_brightness / -fsb
Some video cards adjust the brightness/gamma when they switch into full
screen mode. To counteract this, you can specify the
-full_screen_brightness value, which is a number between 0.1 and 2. 0.1
means 1/10th as bright as the default, and 2 means twice as bright.
Note that the hardware support for this option is not present on all
video cards. If you set a non-zero value, you may get a warning if MAME
was unable to set the brightness on your card. The default is 0, which
means that MAME will not attempt to adjust the brightness on your video
card at all. This option requires -ddraw and -nowindow.
-frames_to_run / -ftr
This option can be used for benchmarking. It tells MAME to stop
execution after a fixed number of frames. By combining this with a
fixed set of other command line options, you can set up a consistent
environment for benchmarking MAME performance.
-effect
Apply various blitting effects to emulate the look of Arcade monitors.
Using these modes comes at the cost of reduced emulation speed, which
is inherent to these modes. The current implementation is already as
fast as possible, using self-modifying assembly code. For some of
these, MMX is required. Possible values:
none no effect (this is the default)
sharp no effect, but gives a sharper image
scan25 25% scanlines
scan50 50% scanlines
scan75 75% scanlines
scan75v 75% scanlines (vertical)
rgb3 a certain "monitor mask"
rgb4 another one
rgb4v another one (vertical)
rgb6 another one
rgb16 another one
rgbtiny another one. Choose the one you like best.
-screen_aspect
Give a screen aspect ration in the form X:Y where X is the horizontal
and Y the vertical part. Examples are 4:3 for most resolution settings
on computer monitors, 5:4 for the 1280x1024 resolution or 3:4 for
turnable LCD's in the turned position. The default is 4:3.
Windows video options (Direct3D)
--------------------------------
-[no]direct3d / -[no]d3d
Use Direct3D to display the image. This does not render 3D games using
3D hardware, it just uses 3D hardware to display the image, and apply
effects to it. -triplebuffer, -waitvsync, -resolution, -refresh,
-switchres, -switchbpp, -resolution all work with this option. This
option overrides -ddraw and implies -hwstretch. The default is OFF
(-nodirect3d).
-[no]d3dtexmanage
Let Direct3D handle conversion of the image to a texture (required to
display it with Direct3D). This is more compatible, but can be
(significantly) slower on some hardware. The default is ON
(-d3dtexmanage). Using -nod3dtexmanage can eliminate a loss of
performance that may occur with some graphics cards when using
-direct3d. This option requires -direct3d.
-zoom [z] / -z [z]
Try to get a resolution that enlarges the emulated game z times. The
default is -zoom 2. MAME determines the resolution automatically. This
option only works with -direct3d.
-d3dfilter [f] / -flt [f]
Select the type of filtering to apply to the image when stretching. 0
is point filtering, 1 is bi-linear filtering, 2 is bi-cubic filtering
(flat kernel), 3 is bi-cubic filtering gaussian kernel), 4 is
anisotropic filtering. Note that very few graphics cards support
bi-cubic filtering, and that older graphics cards may not support
anisotropic filtering. The default is bi-linear filtering (-d3dfilter
1). This option requires -direct3d.
-d3dscan [i]
Select the scanline effect intensity in percentages. 0 is black lines
between scanlines, 100 is disable scanline effect. The default is
DISABLE (-d3dscan 100). This option requires -direct3d.
-d3dfeedback [i]
Select the feedback effect intensity in percentages. 0 is disable,
higher values feed back the previous frame to the current one at the
specified intensity. The default is DISABLE (-d3dfeedback 0). This
option requires -direct3d.
-d3dprescale [option]
Pre-scale up the image with point filtering before fitting the image to
the screen. This gives an only slightly fuzzy image even at high
display resolutions. The options are:
none disable.
auto adaptively apply a moderate pre-scale effect,
depending on other efects used.
full adaptively apply an agressive pre-scale effect.
n (where 2 <= n <= 4) pre-scale the image n times.
The default is AUTO (-d3dprescale auto). This option requires
-direct3d.
-d3deffect [preset]
Select an effect preset. Valid presets are:
none no effect (this is the default)
sharp no effect, but gives a sharper image
scan25 25% scanlines
scan50 50% scanlines
scan75 75% scanlines
scan75v 75% scanlines (vertical)
rgbmicro a certain "monitor mask"
rgbtiny another one
rgb3 another one
rgb4 another one
rgb4v another one (vertical)
rgb6 another one
rgb16 another one
rgbminmask another one
dotmedmask another one
rgbmedmask another one
dotmedbright another one (extra bright)
rgbmaxbright another one (extra bright)
aperturegrille another one. Choose the one you like best.
auto adaptively selects a special preset based on
zoom level.
The default is none (-d3deffect none). This option requires -direct3d.
-d3dcustom [custom preset]
Supply a custom preset. The format is <-d3dcustom
1,0,0x0100,0xC0,0,0,0,0x22,-1,8x8_mame_rgbtiny.rgb>. The meaning
of the mumbers is:
1 RGB effects mode: 0 is off, 1 is multiply mode, 2
is add and multiply mode.
2,3,4,5 pattern preprocessing; use mask, white level, black
level, desaturation, respectively.
6 image attenuation
7 feedback (0 is don't use)
8 prescale. bit 4: prescale horizontally, bit 0:
prescale vertically.
9 maximum scanline intensity.
10 pattern filename, including path.
The filename must start with XxY, where X and Y are the dimensions of
the pattern in pixels. Each pixel is represented by 4 bytes, red,
green, blue, and mask, respectively. mask is an on/off value, where 0
is off. This option requires -direct3d.
-d3dexpert [settings]
Undocumented settings intended mostly for developers. This option
requires -direct3d.
Windows sound options
---------------------
-audio_latency
This controls the amount of latency built into the audio streaming. By
default MAME tries to keep the DirectSound audio buffer between 1/5 and
2/5 full. On some systems, this is pushing it too close to the edge,
and you get poor sound sometimes. The latency parameter controls the
lower threshold. The default is 1 (meaning lower=1/5 and upper=2/5).
Set it to 2 (-audio_latency 2) to keep the sound buffer between 2/5 and
3/5 full. If you crank it up to 4, you can definitely notice the lag.
Windows misc options
--------------------
-[no]sleep
Since MAME is running in a multitasking environment, it should be nice
to its fellow processes. Therefore, if MAME does not need all
processing power to emulate a game, it gives back already granted
processor time to the operating system. This may not work in every
case, so it can be disabled and MAME turned once again into a CPU hog.
The default is ON (-sleep).
-[no]high_priority
Increases the thread priority so MAME runs better. The default is OFF
(-nohigh_priority).
-[no]rdtsc
Prefer RDTSC over QueryPerformanceCounter for timing. The default is
OFF (-nordtsc). -rdtsc sometimes causes problems on laptops, and
-nordtsc may cause problems on desktop computers. If MAME does not
operate smoothly (and you are sure you have enough CPU power for
the emulation), try toggling this.
Input device options
--------------------
-[no]mouse
Controls whether or not MAME looks for a mouse controller to use. When
this is enabled, you will not be able to use your mouse in Windows
while playing a game. If you want to get control of your computer back,
you will need to pause the game, or quit. The default is OFF
(-nomouse).
-[no]joystick / -[no]joy
Controls whether or not MAME looks for joystick/gamepad controllers.
When this is enabled, MAME will ask DirectInput about which controllers
are connected. The default is OFF (-nojoystick).
-[no]steadykey / -[no]steady
Some games require two or more buttons to be pressed at exactly the
same time to make special moves. Due to limitations in the PC keyboard
hardware, it can be difficult or even impossible to accomplish that
using the standard keyboard handling. This option selects a different
handling that makes it easier to register simultaneous button presses,
but has the disadvantage of making controls less responsive. The
default is OFF (-nosteadykey)
-[no]keyboard_leds / -[no]leds
Since MAME uses an input device (keyboard) for output, this sort of
belongs here. Using this option enabes/disables simulation of the game
LEDs by the keyboard LEDs. This works fine, but can lead to problems
after exiting MAME (i.e. CAPS LOCK remains ON), so you can disable it
here. The default is ON (-keyboard_leds).
-ctrlr <controller>
Enables support for special controllers. Configuration files are
provided for:
hotrod HotRod
hotrodse HotRod SE
slikstik SlikStik
xarcade X-Arcade
There is extra documentation available about this in the file
ctrlr.txt.
-a2d_deadzone / -a2d
If you play with an analog joystick, but the game requires digital
input, MAME needs to convert the signals. Here you can give the ratio
of movement along an axis that accounts for a digital signal. This
option expects a float in the range of 0.0 to 1.0. The default is 0.3.
Note: the current handling is not precise, as it does also implicitely
set the size of the arc which is interpreted as diagonal movement. This
is a known problem but it requires some major rework of the input
handling code to fix it.
MAME core video options
-----------------------
-[no]norotate
-[no]autorol
-[no]autoror
-[no]rol
-[no]ror
-[no]flipx
-[no]flipy
These are the standard MAME rotation options. They are all OFF by
default.
-debug_resolution wxh / -dr wxh
Specifies the resolution of the debugger bitmap in the debug build.
This controls how big the debugger window will be, and therefore, how
many rows/columns it will display. The default value is 0x0, which sets
the automatic 640x480 default debugger size. Note that the debugger is
only available when running in a window.
-gamma
This controls the global gamma correction in the game. It is the same
gamma that is applied when you bring up the on-screen-display within
MAME. The default is 1.0.
-brightness / -bright
This controls the global brightness correction in the game. It is the
same brightness that is applied when you bring up the on-screen-display
within MAME. The default is 1.0.
-pause_brightness
This controls the brightness level when MAME is paused. The default
value is 0.65.
MAME core vector options
------------------------
-[no]antialias / -[no]aa
Antialiasing for vector games. The default is ON (-antialias).
-[no]translucency / -[no]tl
Enables or disables vector translucency. Colors of crossing vector
beams will be merged. The default is ON (-translucency).
-beam
Sets the width in pixels of the vectors. This option expects a float in
the range of 1.00 through 16.00 as argument. The default is 1 (1 pixel
wide).
-flicker
Makes the vectors flicker. This option requires a float argument in the
range of 0.00 - 100.00 (0=none, 100=maximum). The default is 0.
-intensity
Sets the intensity correction for the beam. Higher values give a
brighter beam. This option expects a float in the range of 0.5 through
3.0 as argument. The default is 1.5.
MAME core sound options
-----------------------
-[no]sound
Enable or disable sound altogether. The default is ON (-sound).
-[no]samples
Use samples if available. The default is ON (-samples).
-volume / -vol
Sets the startup volume. It can later be changed with the On Screen
Display (see Keys section). The volume is an attenuation in dB: e.g.,
"-volume -12" will start with -12dB attenuation. The default is 0.
-samplerate / -sr
Sets the audio sample rate. Smaller values (e.g. 11025) cause lower
audio quality but faster emulation speed. Higher values (e.g. 44100)
cause higher audio quality but slower emulation speed. The default is
44100.
-[no]resamplefilter
If the samplerate of the original hardware does not match the
samplerate actually used by an integer factor, apply a filter. This is
more faithful to the original sound, however, the sound may not be as
crisp. The default is ON (-resamplefilter).
MAME core misc options
----------------------
-[no]artwork / -[no]art
Enable or disable usage of additional artwork (backdrops, overlays,
etc.). The default is ON (-artwork).
-[no]use_backdrops / -[no]backdrop
Enables/disables the display of backdrops. The default is ON
(-use_backdrops).
-[no]use_overlays / -[no]overlay
Enables/disables the display of overlays. The default is ON
(-use_overlays).
-[no]use_bezels / -[no]bezel
Enables/disables the display of bezels. The default is ON
(-use_bezels).
-[no]artwork_crop / -[no]artcrop
This will crop the artwork to the game screen area only. The default is
OFF (-noartwork_crop).
-artworkresolution / -artres
Scale the game by this factor to accommodate for higher resolution
artwork. The default is 0 (auto).
-bios
Expects a BIOS name as the parameter. -listinfo/xml will list the
possible BIOS names for a game/system.
-[no]skip_disclaimer
Forces MAME to skip displaying the disclaimer screen. The default is
OFF (-noskip_disclaimer).
-[no]skip_gameinfo
Forces MAME to skip displaying the game info screen. The default is OFF
(-noskip_gameinfo).
-[no]cheat / -[no]c
Cheats, like the speedup in Pac Man or the level-skip in many other
games, are disabled by default. Use this switch to turn them on. The
default is OFF (-nocheat).
-[no]debug
Activates the integrated debugger. During emulation, press the tilde
key (~) to activate the debugger. This is available only if the program
is compiled with MAME_DEBUG defined. The default is OFF (-nodebug).
-playback / -pb
Expects a filename as parameter. Play back all game inputs from from
file INP/filename.inp. The gamename is contained in this file,
therefore a gamename needs not be given on the commandline.
-record / -rec
Expects a filename as parameter. All game inputs are written to the
file INP/filename.inp.
-[no]log
Creates a log of illegal memory accesses in ERROR.LOG. The default is
OFF (-nolog).
-maxlogsize
Expects a number as parameter. If the size of error.log (in kilobytes)
hits that number, MAME will exit. By default, this is set fairly low
(10 MB). This is in effect only if you are actually generating the
error.log file.
Other MAME frontend options
----------------------------
Note: By default, all the '-list' commands below write info to the screen. If
you wish to write the info to a textfile instead, add this to the end of your
command:
> filename
...where 'filename' is the textfile's path and name (e.g., c:\mame\list.txt).
-help / -?
Displays current MAME version and copyright notice
-[no]clones
Used together with the list commands, enables/disables listing of
alternate ("cloned") versions of the same game. The default is ON.
-list / -ls
Displays a list of currently supported games.
-listfull / -ll
Displays a list of game directory names + descriptions.
-listgames
List the supported games, year, manufacturer.
-listdetails
Displays a detailed list of drivers and the hardware they use.
-listsourcefile
Displays the source file (in the drivers directory) containing the
driver for the specified game. Useful for finding which driver a game
runs on in order to fix bugs.
-listinfo / -li
List comprehensive details for all of the supported games. The output
is quite long, so better redirect this into a file. The output is in
MAME's own format, see listinfo.txt for details.
-listxml / -lx
List comprehensive details for all of the supported games. The output
is quite long, so better redirect this into a file. The output is in
XML format.
-listclones / -lc
Lists clones of the specified game. When no game is specified, this
generates a list of all MAME-supported clones.
-listsamdir
List directory names for samples. Some clones can share their samples
with their parents (no pun intended).
-listcrc
List CRC32 checksums of rom files
-listdupcrc
Find romfiles with same CRC32 (for developers).
-listroms
Displays ROMs required by the specified game.
-listsamples
Displays samples required by the specified game.
-verifyroms
Checks specified game(s) for missing and invalid ROMs. Adding "*"
checks all available games.
-verifysets
Checks specified game(s) and reports its status. Adding "*" checks all
available games. Terse output.
-vset
Checks specified game(s) and reports its status. Adding "*" checks all
available games. Slightly more verbose output.
-verifysamples
Check selected game for missing samples. Adding "*" checks all
available samples.
-vsam
Check selected game for missing samples. Adding "*" checks all
available samples.
-romident
Attempts to identify ROM files, if they are known to MAME, in the
specified .zip file. Can be used to try and identify ROM sets taken
from unknown boards.
-isknown
Very terse romident.
-crconly
Uses only CRC-32 for all integrity checks. Disables the use of SHA-1
checks when loading the ROMs.
-gamelist
Used internally to create gamelist.txt
-sortname
-sortdriver
Used internally for creating gamelist.txt
-listcpu
-listcpuclass
-listgamespersourcefile
-listnosound
-listnvram
-listpalettesize / -lps
-listromdistribution
-listromnumber
-listromsize / -lrs
-listsound
Lists various statistical data.
-listwrongmerge / -lwm
-wrongfps
-wrongorientation
