ROM image needs to be in Super MagiCom (*.smc), Super FamiCom (*.sfc),
*.fig, or split (*.1, *.2, or sf32527a, sf32527b, etc) format and can be
compressed with gzip or compress.

Graphics options:
-tr or transparency (default: off)
   Enable transparency effects, also enables 16-bit screen mode selection.
   Transparency effects are automatically enabled if the depth of your X
   server is 15 or greater.
-16 or -sixteen (default: off)
   Enable 16-bit internal screen rendering, allows palette changes but no
   transparency effects.
-hires or -hi (default: lo-res.)
   Enable support for SNES hi-res. and interlace modes. USE ONLY IF GAME
   REQUIRES IT (FEW DO) BECAUSE IT REALLY SLOWS DOWN THE EMULATOR.
-y or -interpolate (default: off)
   Enables 'TV mode', hires support, 16-bit internal rendering and
   transparency effects. TV mode scales the SNES image by x2 by inserting an
   extra blended pixel between each SNES pixel and 80% brightness 'scan-lines'
   between each horizontal line. The result looks very nice but needs a fast
   machine. Use with the full-screen X mode and a 15 or 16 depth X server,
   or the SVGA port for fastest operation.
-nms or -nomodeswitch (default: switch modes)
   The Linux X Windows System port can change the screen resolution when
   switching to full-screen mode so the SNES display fills the whole screen.
   Specify this option to stop it if causes you problems.
-fullscreen or -fs
   Start the emulator in full screen mode, rather than a window on the X11
   port if supported by your X server, a suitable screen mode is defined in
   your XF86Config file and the snes9x binary has root permissions (see above).
-scale or -sc (default: off)
   Stretch the SNES display to fit the whole of the computer display.
   Linux X Window System full-screen mode or SVGA port only. Use only if you
   have a very fast machine.
-displayframerate or -dfr
   Display a frame rate counter superimposed over the bottom, left-hand corner
   of the SNES display. The value before the slash (/) indicates how many
   frames per second are being rendered compared to a real SNES, the value of
   which is displayed after the slash.
-graphicwindows
   Enable graphic window effects (default: enabled)
-nographicwindows or -nw
   Disable graphic window effects (default: enabled)


Sound options:
-ns or -nosound
   Disable sound CPU emulation and sound output, useful for the few ROMs
   where sound emulation causes them to lock up due to timing errors.
-sk 0-3 or -soundskip 0-3 (default: 0)
   ONLY USED IF SOUND IS DISABLED. The algorithm to use when trying to fool
   a ROM into thinking that the SPC700 sound CPU is there when actual emulation
   of it is turned off (for speed reasons).
-stereo or -st (default: stereo)
   Enable stereo sound output.
-mono (default: stereo)
   Enable mono sound output. Faster, but doesn't sound as nice.
-r 0-7 or -soundquality or -sq 0-7 (default: 4)
   Sound playback rate/quality:
       0 - disable sound, 1 - 8192, 2 - 11025, 3 - 16500, 4 - 22050 (default),
       5 - 29300, 6 - 36600, 7 - 44000.
-envx or -ex (default: off)
   Enable volume envelope height reading by the sound CPU. Can cure sound
   repeat problems with some games (e.g. Mortal Kombat series), while causing
   others to lock if enabled (eg. Bomberman series). Use with -sy option below
   to fix the problems this option can otherwise create.
-ts or -threadsound
   Starts to feed data to the sound card using a separate thread rather than
   using timers, signals and polling. Use to work around a bug in the Sound
   Blaster Live Linux driver that keeps telling Snes9x that the sound card
   can accept more sound data, when it actually cannot and Snes9x slows down
   or locks up, or if use have a multi-CPU system so sound processing can
   take place on the other CPU for speed.
-sy or -soundsync
   Turns on sound-sync code where sound data is generated in sync with the
   emulation of the SNES sound CPU instructions. Slighty slower emulation speed
   but helps reduce note and sound effects timing problems and one or two
   games actually require this mode, notably Williams Arcade Classics.
   Also turns on interpolated sound and envelope height reading.
   Pressing the ']' key during gameplay toggles sound-sync only on and off.
   Not very effective/useless when thread sound is enabled due to mutex data
   locking timing problems.
-is or -interpolatedsound (default: off)
   Turns on interpolated sound. Any samples played at a lower frequency than
   the current playback rate (-r option) have additional sample points
   computed and played where previously the same sample data was played
   repeatedly. Lower frequency sounds have improved bass and sound much less
   harsh - I suspect the real SNES does this.
   Pressing '[' during gameplay toggles the feature on and off.
-b size or -buffersize size or -bs size (default: auto-select)
   Sound playback buffer size in bytes 128-4096.
-nosamplecaching or -nsc or -nc (default: on)
   Disable decompressed sound sample caching. Decompressing samples takes time,
   slowing down the emulator. Normally the decompressed samples are saved
   just in case they need to be played again, but the way samples are stored
   and played on the SNES, it can result in a click sound or distortion when
   caching samples with loops in them.
-noecho or -ne (default: on)
   Turn off sound echo and FIR filter effects. Processing these effects can
   really slow down a non-MMX Pentium machine due to the number of calculations
   required to implement these features.
-ratio 1+ or -ra 1+ (default: 2) (OBSOLETE)
   Ratio of 65c816 to SPC700 instructions. The value is no longer used
   because SPC700 cycle counting is now implemented giving much more acturate
   timing.
-nomastervolume or -nmv (default: on)
   Disable emulation of the sound DSP master volume control. Some ROMs set
   the volume level very low requiring you to turn up the volume level of
   your speakers introducing more background noise. Use this option to
   always have the master volume set on full and to by-pass a bug which
   prevents the music and sound effects being heard on Turrican.

Cheat options:
-gg <code> or -gamegenie <code>
   Supply a Game Genie code for the current ROM. Up to 10 codes can be in
   affect at once. Game Genie codes for many SNES games are available from:
   http://game-genie.nvc.cc.ca.us
-ar <code> or -actionreplay <code>
   Supply a Pro-Action Reply code for the current ROM. Up to 10 codes can be in
   affect at once. At the moment, codes which alter RAM do not work.
-gf <code> or -goldfinger <code>
   Supply a Gold Finger code for the current ROM. Up to 10 codes can be active
   at once.

Speed up/slow down options: (See "Speeding Up The Emulation")
-f <frame skip count> or -frameskip <frame skip count> (default: auto-adjust)
   Set this value to deliberately fix the frame skip rate and disable auto-
   speed regulation. Use a larger value faster emulation but more jerky
   movement and a smaller value for smooth but slower screen updates.
   Use '+' and '-' keys to modify the value during a game.
   Ideal for some Super FX games that confuse the auto-adjust code or
   for games that deliberately flash the screen every alternate frame.
-frametime <time in milliseconds> or -ft <time in milliseconds>
   (default: 16.6ms NTSC games and 20ms for PAL games)
   If auto-adjust frame skip option is in effect, then the emulator will try
   to maintain a constant game and music speed locked to this value by skipping
   the rendering of some frames or waiting until the required time is reached.
   Increase the value to slow down games, decrease it to speed up games.
   During a game the value can be adjusted in millisecond steps by pressing
   Shift '-' or Shift '+'.
-h <0-200> or -cycles <0-200>(default: 100)
   Percentage of CPU cycles to execute per scan line, decrease value to
   increase emulation frame rate. Most ROMs work with a value of 85 or above.
-j or -nojoy
   Turn off joystick, SideWinder and GrIP detection (joystick polling on the
   PC slows the emulator down).

ROM image format options:
-i or -interleaved (default: auto-detect)
   Force interleaved ROM image format.
-i2 or -interleaved (default: can't be auto-detected)
   Force alternate interleaved format (i.e. most Super FX games).
-hirom or -fh or -hr (default: auto-detect)
   Force Hi-ROM memory map for ROMs where the Hi-ROM header test fails.
-lorom or -fl or -lr (default: auto-detect)
   Force Lo-ROM memory map for ROMs where the Hi-ROM header test fails)
-header or -hd (default: auto-detect)
   Force the detection of a ROM image header. Some ROM images have been
   hand-edited to remove unused space from the end of the file; if the
   resultant image size is not a multiple of 32k then Snes9x can't
   auto-detect the presense of a 512 byte ROM image header.
-noheader or -nhd (default: auto-detect)
   Force Snes9x into thinking no ROM image header is present. See -header
   above.
-p or -pal (default: auto-detect)
   Fool ROM into thinking this is a PAL SNES system and adjust frame time
   to 20ms (50 frames per second)
-n or -ntsc (default: auto-detect)
   Fool ROM into thinking this is a NTSC SNES system and adjust frame time
   to 16.7ms (60 frames per second)
-l or -layering (default: off)
   Swap background layer priorities from background involved in sub-screen
   addition/subtraction. Can improve some games play-ability - no need to
   constantly toggle background layers on and off to read text/see maps, etc.
   Toggle feature on and off during game by pressing '8'.
   Not used if transparency effects are enabled.
-l <freeze game file name> or -loadsnapshot <freeze game file name>
   Load snapshot file and restart game from saved position.
-nh or -nohdma (default: H-DMA enabled)
   Turn off the H-DMA emulation. Pressing '0' during a game toggles H-DMA on
   and off.
-n or -nospeedhacks (default: speed hacks)
   Turn off a couple of speed hacks. The hacks boost the speed of many ROMs
   but cause problems a few ROMs.
-nw or -nowindows (default: graphics windows emulated)
   Disable graphics windows emulation. Use 'backspace' key during a game to
   toggle the emulation on and off.

Joystick options:
-joymap[1|2|3|4] followed by 8 numbers
   Specify the SNES joypad buttons to Linux joystick driver buttons mapping for
   each of the four supported joypads.
   Specify the Linux joystick button number for the corresponding SNES button
   in the following order: A, B, X, Y, TL, TR, Start and Select
   The default map is: 1 0 4 3 6 7 8 9
   which is suitable for Sidewinder gamepads.
-s or -swap
   Swap emulated joy-pad 1 and 2 around, pressing '6' during a game does the
   same thing.
-j or -nojoy
   Turn off joystick, SideWinder and GrIP detection (joystick polling on the
   PC slows the emulator down).
-joydevX /dev/jsY
   Use joystick device /dev/jsY for emulation of gamepad X
-old or -o
   Enable old-style SNES joypad emulation
-noold or -no
   Disable old-style SNES joypad emulation
