Here its is: c64 emu for psp
Download, unpack the zip file and copy the two c64psp directories to the /PSP/GAME directory on your PSP. Sit back and bask in blue screen 8 bit goodness. Now press the Start button...
Currently, disk image handling is not implemented, but pressing Start will load the file snapshot.fss from the main c64psp directory. USB connectivity is enabled on startup, so simply replace snapshot.fss with a snapshot saved from a desktop version of Frodo running your favourite game and just hit Start to reload.
Control is limited to emulation of the Port 2 joystick. Diagonals may not seem to work properly, but this seems to be a PSP problem, not an urchin problem. Response seems to improve after a bit of breaking in (of the PSP, not urchin)
Video seems to work well, though is not centered at the moment. Sound is working, but there seems to be some voice drop out - not sure yet whether this is Frodo, SDL_mixer, or urchin related.
c64psp has only been tested on a firmware V1.5 PSP and was developed using SDL for graphics, SDL_mixer for video and the pspdev compiler toolchain. Intended as a preview, there are many features missing and probably many unexpected features included. Use at your own risk and check back for updates.
Official Website: http://urch.in/c64psp/