Apsd has finally gathered up this post to release this beta version of the emulator. He calls it beta for three reasons, the first is that there is a bug he needs to weed out that causes it to improperly play tetris, the second is that the key arrangement is currently not optimized, the third is that the sound code for the single "beep" (which can be varied in length throughout the games) isn't implemented. (the Chip8 interpreter has 16 keys, so all convenient keys on the PSP are used (Circle, Triangle, Cross, Square, Up, Down, Left, Right, Analog stick up, down, left, right, and a few others... two keys are disabled in this version).

He has packaged the interpreter with just about every Chip8 game (they're public domain) he could find.

He'll release the source soon.

Expect SCHIP8 (SuperChip8- a few new instructions, extended screen) support in about two releases- these games are slightly more interesting.

Read the readme for more information, and check wikipedia if you want to learn more about CHIP-8.

Don't expect these "games" to be breathtaking. [S]CHIP-8 was a very simple interpreter.