Hi. You know, Toni Westbrook made some PSX64 adapters which lets you use PSX controllers amiga/atari/c64. The nice thing is that you can use wireless psx controllers, plus the pic (?) on his adapter opens for macro-editing buttoncombinations for the psx buttons not used as fierbutton. This is programmable directly from the psx controller using dedicated buttons for this.
It would be nice if you were able to implement this on your pcb so that we can natively use psx ontrollers via this mega8 chip. Of course, general outputs for vintage joysticks are also needed

This enables "sofa friendly playing (SFP)" when they are wireless :-)
http://www.synthdreams.com/psx64.php for more info and you can find schematics + firmware here:
http://www.synthdreams.com/knowledgebase?art=10Regs
Espen