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

YoshiNES is a NES emulator written in Visual Basic and is based on basicNES.

Quote:
v0.4

- Rearranged the menus
- Added pallete viewer
- Added Pattern Table viewer
- Little fixes in mapper 228 (Action 52 still unplayable)
- Added mapper 47 (partial)
- Added mapper 212 (10000000 in 1 and other multicarts) partial
- Fixed mapper 146, now working perfect
- Some minor bugfixes