Here is a link to some emu's that I've tested on the Sprint touch pro. Have not tried n64 emu's simply because the analog control of alot of games would be difficult at best, not to mention the amount of buttons would be hard to assign.
I will look into it this week and see if its possible, by trying a few. Original playstation will probably be doable, though not sure about how speedy it will be. Again, will look into it this week and see what I can find.
Check post #42 for links to the emu's
http://forum.ppcgeeks.com/showthread...mer+rom&page=5