Mednafen-PS3 released yesterday
mednafen-ps3 - Project Hosting on Google Code
Found on psx-scene. As it is described, it runs NES, GB, GBC, GBA, SMS, GG systems and will only run .zip files. A lot of other users on psx-scene have posted problems due to this. So before anyone says, "It kicks me back to the XMB!!! It doesnt work!!!", do not unzip the roms.
For the future, there will be PCE and PCE CD support along with Neo-Geo pocket, Atari Lynx and Wonder Swan support.
As it does not contain a Readme file, (had to search for this) here you go:
This is a port of the Mednafen Multi-System emulator to the Sony Play Station 3.
Emulates NES GB GBC GBA SMS GG
Load uncompressed or zipped images
Save and load save ram and save states
File browser, place your games on a USB drive, or FTP them to the internal drive
The first time you load a game for a system, you will be asked to configure the controls, you can reconfigure them later by pressing L3 + R3.
PCE and PCE CD support
Neo-Geo pocket, Atari Lynx and Wonder Swan support
Better user interface
Up and Down to Scroll the list by 1
Left and Right to scroll the list by a page
Cross: Select File or directory
Circle: Go to previous directory
Tilt the right stick to the right for fast forward
R3 to open settings menu
Hold L3 + L2 to save state
Hold L3 + R2 to load state
Hold L3 + R3 to redefine controls
Up and down to choose setting
Left and right to change the current settings value
The original author of Mednafen, and all of the emulators it contains.
The people who make the PS3 jailbreak possible