Misc. Options

--no-config {0|1}

Use default config file and do not save to it, when enabled.

-g {0|1}, --gamegenie {0|1}

Enable or disable emulated Game Genie.

--nogui {0|1}

Enable or disable the GTK GUI.

--loadlua FILE

Loads lua script from filename FILE.

Emulation Options

--pal {0|1}

Enable or disable PAL mode.

Input Options

-i DEV, --inputcfg DEV

Configures input device DEV on startup. Devices: gamepad powerpad hypershot quizking

--input{1|2} DEV

Set which input device to emulate for input 1 or 2. Devices: gamepad zapper powerpad.0 powerpad.1 arkanoid

--input{3|4} DEV

Set the famicom expansion device to emulate for input 3 or 4. Devices: quizking hypershot mahjong toprider ftrainer familykeyboard oekakids arkanoid shadow bworld 4player

--inputdisplay {0|1}

Enable or disable input display.

--fourscore {0|1}

Enable or disable fourscore emulation.

Graphics Options

--newppu {0|1}

Enable or disable the new PPU core. (WARNING: May break savestates)

--frameskip NUM

Set NUM of frames to skip per emulated frame.

--clipsides {0|1}

Enable or disable clipping of the leftmost and rightmost 8 columns of the video output.

--slstart SCANLINE

Set the first scanline to be rendered.

--slend SCANLINE

Set the last scanline to be rendered.

--nospritelim {0|1}

When set to 0, this disables the normal 8 sprites per scanline limitation. When set to 1, this enables the normal 8 sprites per scanline limitation. NOTE: Yes, this option is 'backwards'.

-x XRES, --xres XRES

Set horizontal resolution for full screen mode.

-y YRES, --yres YRES

Set vertical resolution for full screen mode.

--doublebuf {0|1}

Enable or disable double buffering.

--autoscale {0|1}

Enable or disable autoscaling in fullscreen.

--keepratio {0|1}

Keep native NES aspect ratio when autoscaling.

--{x|y}scale VAL

Multiply width/height by VAL. (Real numbers > 0 with OpenGL, otherwise integers > 0).

--{x|y}stretch {0|1}

Stretch to fill surface on x/y axis (OpenGL only).

-b {8|16|24|32}, --bpp {8|16|24|32}

Set bits per pixel.

--opengl {0|1}

Enable or disable OpenGL support.

--openglip {0|1}

Enable or disable OpenGL linear interpolation.

-f {0|1}, --fullscreen {0|1}

Enable or disable full-screen mode.

--noframe {0|1}

Hide title bar and window decorations.

--special {1-4}

Use special video scaling filters. (1 = hq2x 2 = Scale2x 3 = NTSC 2x 4 = hq3x 5 = Scale3x)

-p FILE, --palette FILE

Use the custom palette in FILE.

--ntsccolor {0|1}

Enable or disable NTSC NES colors.

--tint VAL

Set the NTSC tint.

--hue VAL

Set the NTSC hue.

Sound Options

-s {0|1}, --sound {0|1}

Enable or disable sound.

--soundrate RATE

Set the sound playback sample rate (0 == off?).

--soundq {0|1|2}

Set sound quality. (0 = Low 1 = High 2 = Very High)

--soundbufsize MS

Set sound buffer size to MS milliseconds.

--volume {0-256}

Sets the sound volume to the given value, where 256 is max volume.

--trianglevol {0-256}

Sets the sound volume of the triangle wave to the given value, where 256 is max volume.

--square1vol {0-256}

Sets the sound volume of square wave 1 to the given value, where 256 is max volume.

--square2vol {0-256}

Sets the sound volume of square wave 2 to the given value, where 256 is max volume.

--noisevol {0-256}

Sets the sound volume of the noise generator to the given value, where 256 is max volume.

--lowpass {0|1}

Enables or disables lowpass filtering of the sound.

--soundrecord FILE

Record sound to file FILE.

Movie Options

--playmov FILE

Play back a recorded FCM/FM2 movie from filename FILE.

--pauseframe FRAME

Pause movie playback at frame FRAME.

--moviemsg {0|1}

Enable or disable movie messages.

--fcmconvert FILE

Convert fcm movie file FILE to fm2.

--ripsubs FILE

Convert movie's subtitles to srt.

--subtitles {0|1}

Enable or disable subtitle display.

Networking Options

-n SRV, --net SRV

Connect to server SRV for TCP/IP network play.

--port PORT

Use TCP/IP port PORT for network play.

-u NICK, --user NICK

Set the nickname to use in network play.

-w PASS, --pass PASS

Set password to use for connecting to the server.

-k NETKEY, --netkey NETKEY

Use string NETKEY to create a unique session for the game loaded.

--players NUM

Set the number of local players.

--rp2mic {0|1}

If enabled, replace Port 2 Start with microphone (Famicom).

--videolog c

Calls mencoder to grab the video and audio streams to encode them. Check the documentation for more on this.?

--mute {0|1}

Mutes FCEUX while still passing the audio stream to mencoder.

Gamepad Keyboard Bindings

Other Commands

<Alt+Enter>

Toggle full-screen mode.

<F1>

Cheat menu (command-line only).

<F2>

Toggle savestate binding to movies.

<F3>

Load LUA script.

<F4>

Toggles background rendering.

<F5>

Save game state into current slot (set using number keys).

<F7>

Restore game state from current slot (set using number keys).

<F10>

Toggle movie subtitles.

<F11>

Reset NES.

<F12>

Save screen snapshot.

Shift+<F5>

Beging recording video.

Shift+<F7>

Load recorded video.

0-9

Select save state slot.

PageUp/PageDown

Select next/previous state.

-

Decrease emulation speed.

=

Increase emulation speed.

Tab

Hold for turbo emulation speed.

Pause

Pause emulation.

\

Advance a single frame.

.

Toggle movie frame counter.

,

Toggle input display.

q

Toggle movie read-only.

'

Advance a single frame.

/

Lag counter display.

Delete

Frame advance lag skip display.

<ESC>

Quit FCEUX.

VS Unisystem Commands

<F8>

Insert coin.

<F6>

Show/Hide dip switches.

1-8

Toggle dip switches (when dip switches are shown).

Famicom Disk System Commands

<F6>

Select disk and disk side.

<F8>

Eject or insert disk.

http://fceux.com/

The FCEUX project homepage.