FCEUX is a cross platform, NTSC and PAL Famicom/NES emulator that is an evolution of the original FCE Ultra emulator. Over time FCE Ultra had separated into many separate branches.

The concept behind FCEUX is to merge elements from FCE Ultra, FCEU rerecording, FCEUXD, FCEUXDSP, and FCEU-mm into a single branch of FCEU. As the X implies, it is an all-encompassing FCEU emulator that gives the best of all worlds for the general player, the ROM-hacking community, and the Tool-Assisted Speedrun Community.

We are particularly excited by the Lua scripting capabilities which have been ported over from FCEU rerecording and prepped for further development. In order to use Lua in the windows build you will need the luapack [fceux.com/luapack] which should be unzipped alongside your fceux.exe. The large numbers of dlls wasn't our choice; but it will enable the iup user interface library which will permit scripts to create their own guis, as well as rendering the base fceux distribution more compact. Examples of lua scripts may be found in the subversion repository here

You can find out what we've been up to since the last release by checking the changelog directly.

The latest win32 interim build is generally fresh within a day or two at http://fceux.com/zip -- If you are working with a developer to fix an issue affecting you then this is where you will find your fixed build.

We have a mailing list for all kinds of discussion about FCEUX. You can subscribe at the fceultra-discuss mailing list page.

Of course, we are always hanging out at irc.freenode.net #fceu

02 November 2008

FCEUX 2.0.3 release

Jump to the download page.

We have been trying to address issues which are holding back adoption of FCEUX for both the SDL and windows builds.

emulator:
bug: fix fcm conversion, recording, and playback of reset and power commands
bug: prevent excessively long movie filenames
bug: SF [ 2085437 ] should fix issues with missing author field in fcm convert crashing fceux
bug: fix savestate recovery code which prevented aborted savestate loads from recovering emulator state correctly.
bug: gracefully handle non-convertible broken utf-8 text without crashing
enh: permit user optionally to proceed through the movie savestate mismatch error condition, in case he knows what he is doing.
enh: Adding an experimental (optional and undocumented) new PPU. Slow, but more precise in some ways. 
     Contact developers if you think you need more precision

sdl: 
bug: fixed issue where windowed mode would always be set to 32 bpp
bug: SF [ 2062823 ] fixed ppc build errors and added LSB_FIRST option to build scripts
bug: SF [ 2057008 ] lua is now optional, thanks shinydoofy for a patch.  also fixed some build issues.
bug: SF [ 2008437 ] fixed an issue where flawed movie would crash fceux on every startup
enh: added support for AVI creation for SDL, see documention/Videolog.txt for more
enh: toggle lag frame counter for SDL, default hotkey F8
enh: toggle skipping of lag frames for SDL, default hotkey F6
enh: made the input config window more usable
enh: --inputcfg can now be used without a filename
enh: SF [ 2179829 ] user ability to toggle "bind savestates to movie" added for SDL, default hotkey F2
enh: SF [ 2047057 ] added uninstall script for gfceux

windows:
bug: SF [ 2073113 ] Child windows inside debugging window get invalid sizes
bug: Sound config dialog will now look to see if Mute Turbo should be checked
bug: hex editor find dialog does not reopen (fixed)
bug: SF [ 2058942 ] Load state as... does not use the savestate override dir (fixed; now, it does)
bug: fix problem where replay dialog couldnt work when the process current directory 
     had changed to something other than emulator base directory
bug: fix issue where keyboard keys get stuck when switching between debugger window and main window
enh: added a toggle for binding savestates to movies
enh: added -cfg (config file) command line argument
enh: add maximize button to debugger window
enh: bind a menu option for display framecounter
enh: autoload the only useful rom or movie from an archive, in cases where there is only one
enh: don't read every archive file when scanning for replay dialog. scan them, and only look for *.fm2

emulua:
bug: SF [ 2153843 ] Lua ignores second joypad.set()
enh: add execute timeout functions useful for lua contests

-- zeromus

14 August 2008

FCEUX 2.0.2 release

Jump to the download page.

This release focuses on top-rated user bug and enhancement issues; stabilizing the SDL build; and repairing things that we had recently broken while adding other features to the emulator.

emulator:
bug: restore support for old-format savestates.
bug: restore savestate load error-recovery system
bug: restore IPS patching capability which was lost when archive support was added
bug: restore ungzipping (and unzipping in sdl) capability which was lost when archive support was added
bug: SF [ 2046985 ] SRAM not wiped on power cycle (during movies)
bug: palflag 1 in .fm2 files crashes fceux
enh: add lagcounter and lagflag to savestate
enh: support loading movies from archives

mappers:
bug: remove cnrom chr rom size limit for homebrew roms
bug: upgrade to cah4e3's latest mapper 163&164 code to fix a crash in a game
bug: mmc5 - 64KB WRAM games now work correctly
bug: mmc5 - use of chr A regs for BG in sprite 8x8 mode is fixed

windows:
bug: fix a bug which caused fourscore emulation to fail in some cases
bug: SF [ 2030405 ] Avi recording: no sound b0rks format
bug: SF [ 2040448 ] View Slots bug - does not include new savestate naming
bug: prevent windows from memory re-positioning themselves in the abyss when theyre closed while minimized
bug: removed broken hotkey ctrl+x (prevented cut from working in accel dialogs)
bug: fixed the (null) in the default lua directory listing
bug: SF [ 2037878 ] Convert .fcm doesn't do special characters
bug: SF [ 2046984 ] Player 3/4 input events recorded even when not used
bug: SF [ 2047001 ] Low speeds crash FCEUX
bug: SF [ 2050371 ] FCM>FM2 converter should release file handle
enh: added input display to the FCEUX main menu
enh: auto-fill .fcs extension in save state as dialog
enh: change config filename from fceu98.cfg to fceux.cfg
enh: new toggles: frame adv, lag skip (menu item + hotkey mapping + saved in config)
enh: added a mute turbo option in sound config
enh: add an option to pick a constant color to draw in place of BG when BG rendering is disabled (look for gNoBGFillColor in config; 255 means to use palette[0])
enh: added shift+L as default hotkey for reload lua script
enh: SF [ 2040463 ] Add an "author" text field in the record movie dialog
enh: SF [ 2047004 ] Moviefilenames without extension don't automatically get fm2 (and they need to)
enh: print a special message when trying to open an FCM reminding user to convert
enh: movie replay dialog displays fractions of a second

debugger:
bug: restore the debugger snap functionality
enh: add FORBID breakpoints - regions which block breakpoints from happening if they contain the PC
enh: debugger window is now resizeable and therefore useable at 1024x768
enh: nametable viewer correctly displays more cases (some MMC5 cases I needed)

sdl:
bug: all commandline options now use --argument as they always should have.
bug: fix issue which was resetting config file
bug: Saner sound defaults for less choppy sound
bug: Fixed a bug that would crash fceux if the emulation speed was overincreased
bug: fixed --input(1-4) options
bug: build scripts now look for lua5.1 and lua (distributions package lua differently)
bug: prevent frame advance from crashing emulator
enh: New default hotkeys more closely match win32 defaults
enh: --special option fixed for special video scaling filters
enh: rename options --no8lim -> --nospritelim and --color -> --ntsccolor
enh: Screenshots now always prepend the game name.
enh: Changed default A/B from numpad 2 and 3 to j and k.
enh: Enable frameskip by default
enh: change config path to ~/.fceux/fceux.cfg
enh: Added lua script loading hotkey (f3).  Non-win32 SDL requires zenity for this to function.

emulua:
bug: SF [ 2041944 ] Savestates remember Lua painting (and they shouldn't)
enh: add memory.readbyterange to emulua

-- zeromus

04 August 2008

FCEUX 2.0.1 maintenance release

Jump to the download page.

-- zeromus

02 August 2008

FCE Ultra is BACK! Today, version 2.0.0 has been released as the new software FCEUX.

All users of FCE Ultra are encouraged to switch to FCEUX and bug us if something isn't working well.

Head to the download page to grab the most recent windows binary or portable source code.

-- zeromus