My American PSP's got a few roms. They work fine: it's great being able to play old favourites like Streets of Rage, Sonic 3, World of Illusion, Street Fighter II, and Super Mario All Stars.
It does crash every once in a while: you have to remove the battery in order to reset it because the power switch won't do anything. The famerate's a seems to be little slow on Sonic 3 for me though. When you're doing the special stage to get a chaos emerald it doesn't recognise button presses in time, so you end up losing it. And it gives me a bit of a headache after a while too.
But otherwise it's fine.
