via http://www.aep-emu.de/

A new build from the NES emulator FCEUltra-Win32-mappers-modified has been released. This emulator is based on FCEUltra source code snapshot (fceu-0.98.13).

Quote:
Changelog:

08.02.2012
mapper 52 - fixed to correct CHR bankswitch
mapper 233 - new 42-in-1 multicart variant
UNIF 42in1ResetSwitch - new UNIF wrapper for 226 mapper
UNIF OneBus - completely rewritten from official docs