iPhone NES.app uses the popular InfoNES emulation core to mimic the 6502 processor in a Nintendo Entertainment System, allowing you to play ROM dumps of games designed for the NES console. ROM dumps are files containing the dumped instruction code from a physical cartridge.

Changes since v0.44:

[nervegas] Write preferences to /var/root/Library/Preferences
[nervegas] Corrected Save-State issues with many (many) games
[nervegas] Corrected more save-state issues

http://iphone.natetrue.com/nesapp/