There is a new program out for Palm OS 5 devices that will play all of the RBIs out there (1-3) with full speed and beautiful sound - check it out. And it's free!
http://yoyofr92.free.fr/ljp/index.html
No more need for overstuffed ROMs, either, btw.
Solid! I just got my Treo 650 and downloaded Nesem, though I wasn't going to pay the cash for it. I'll definitely give this a whirl tomorrow...
Finally installed it an played, it's a very impressive program. Kind of awkward to play RBI on a Treo, but it'll be neat to have when I got nothing better to do. This thing emulates NES, SNES, Gameboy and Genesis. Wow...
A new version, 0.9, has been released.