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FCEUX 2.2.3 Release

28 July 2016

The 2.2.3 release fixes a number of emulation bugs, features overclocking (for lag reduction) and Dendy mode, and adds support for a bunch of new ROM dumps (mostly unlicensed). Reverse engineering tools and Lua scripting have got some updates, new input devices are supported, new palette files have beed added. The SDL port has been fixed and updated as well.


Customizable overclocking
Dendy mode
Fixed rerecord counting broken outside taseditor


Added mappers: 29, 30
Fixed mappers: 225, 119, 4, 35, 31, 69, 212, 45
Fixed mmc5 IRQ handling
Fixed mmc1 reg#3 masking
Fixed vrc7 sound savestates
Added CoolBoy, KS7010, SB200, UNIF 158B, UNIF DRAGONFIGHTER, UNIF BMC-10-24-C-A1, UNIF EH8813A, UNIF HP898F, UNIF F-15, UNIF RT-01, UNIF UNL-KS7017, UNIF BMC-81-01-31-C, UNIF UNL-8-IN-1
NES 2.0 support
Fixed UNIF BMC 12 IN 1, UNIF OneBus


Fixed a bug with FDS flag being always set when converting a FCM


Prescale filter for 2x, 3x and 4x resolutions
Made NTSC filter internal resolution closer to 4:3


Support 512 color palettes
Added external palettes: SONY_CXA2025AS_US.pal, RP2C03.pal (and its versions), Unsaturated-V6.pal
Option to swap deemphasis bits


Option to swap duty cycles
NSF can be set to Dendy mode


Fix Mouse input implementation
Support for SNES mouse
PEC-586 russian keyboard support


Removed speed notification per script reload, if it remained 100%
Fixed lua drawings in NSF
Proper halo for lua font
Fixes to sound.get() region consistency and frequency/midikey detection for Noise and DPCM channels
New Lua functions:


Added -dumpinput and -playinput functions
Support for SNES pad
Added onscreen messages when region changes


Added debuggerPageSize config variable which lets you pick whether 8KB physical PRG pages are used, or 16KB (the original). It defaults to 14 (1<<14 == 16KB).
Set symbolic debugger name entry dialog text limits when creating a new label
Fixed new-PPU debug information (address and pixel)
Step Into hotkey
More granular accounting of scanline and dot

Trace Logger

Fixed incorrect display of resolved address for (FF,x)

Symbolic debugging

Optionally display register names


Fix crash when attempting to open file picked as target for Save Stripped ROM operation

PPU Viewer

8x16 sprite display mode

Hex Editor

Added option to dump entire 64k memory space
Don't forget to load the symbols, when hex editor is first launched before debugger
Show values for registers $4000-$4017


mmc5 Akumajou Dracula crash fix
More RAM available in search


Added apply button to video config dialog
Added link to libgd project download page in readme
Noted optional libgd dependency in readme
SCons: Fixed logic for LOGO and CREATE_AVI options
Manpage updates
Added hotkeys for volume up/down
Menu toggling with the Alt key
Print error when opengl/scalers are both enabled
Fixed bug where lua open file gui would default to home directory