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Man Pages

Manual Reference Pages  -  FCEUX (6)


fceux - An emulator for the original (8-bit) Nintendo / Famicom game console.


     Misc. Options
     Emulation Options
     Input Options
     Graphics Options
     Sound Options
     Movie Options
     Networking Options
Keyboard Commands
     Gamepad Keyboard Bindings
     Other Commands
     VS Unisystem Commands
     Famicom Disk System Commands


fceux [options] "filename"


FCEUX is an emulator for the original (8-bit) Nintendo Entertainment System (NES). It has a robust color palette rendering engine that is fully customizable, along with excellent sound and joystick support, and even supports movie recording and playback.


    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.


  FCEUX has a number of commands available within the emulator. It also includes default keyboard bindings when emulating game pads or power pads.

    Gamepad Keyboard Bindings

NES GamepadKeyboard  
UpKeypad Up  
DownKeypad Down  
LeftKeypad Left  
RightKeypad Right  

    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.
  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.

    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.
  The FCEUX project homepage.


This manual page was written by Joe Nahmias <joe _at_>, Lukas Sabota <ltsmooth42 _at_> and Alexander Toresson <alexander.toresson _at_> for the Debian GNU/Linux system (but may be used by others).
Search for    or go to Top of page |  Section 6 |  Main Index

--> FCEUX (6) June 24, 2012

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