PSP2600 is a VCS / Atari 2600 emulator based on Stella.

Changes:

– New graphics from my good friend Horeus (see http://www.ultimatepsp.fr/)
– New Eboot music (see http://www.jamendo.com/en/artist/pako)
– Cheat support (but it doesn’t work with all games)
– Finally fix issue with “Home -> Exit” !
– Add documentation for settings in help menu
– Improve file requester with virtual keyboard to choose sequentially rom files beginning with a given letter
– Text editor to write your own comments on games
– Display first comment line while browsing game files
– Add hotkey to change flicker mode
– Memory monitoring engine to find your own cheat code !
– Text editor to modify the global cheat.txt file

http://zx81.zx81.free.fr/serendipity/index.php?/archives/360-PSP2600-Atari-2600-emulator-for-PSP-v1.2.0-cheat.html