Originally Posted by
Frankie_Says_Relax
As many many hardware modifiers have already done, it could be assignable to the X, Square, Triangle and Circle buttons with some type of software handled dead-space between them.
It would be more of a pseudo digital stick mapped out to buttons ... but in a more appropriate place.
There are plenty of MAME cabinets that use joysticks that are just mapped out to keyboard keys with the fakey-analog timing handled by the software.
I'm sure Sony could do it if they wanted to. (They probably won't on the PSP-4000, but a guy can dream!)