GPFCE is a port of FCE Ultra, a NES/Famicom/FDS emulator.

Changes:

Fixed savestate subsections (were causing some mapper data not to be saved).
Fixed an issue of MapIRQHook getting lost after loading a savestate (glitched Akumajou Densetsu and other games after savestate load).
A bug, which prevented configuring multiple USB pads fixed.
Fixed sound breaking bug after switching it on/off multiple times.
Added “Perfect VSYNC” option, which changes GP2X refresh rate and syncs emu timing to LCD vsync.
Fixed IPS patch support.
Some more bugs fixed.

http://www.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,5,2136