Snaff has released a test release of Vice2x. This is a port of VICE to the GP2x. Currently there’s no UI, you have to edit the startup script to specify what you want to load.

VICE is more accurate than Frodo so many more things will work, but its also much more CPU hungry – when Snaff ported it to the GP32 it was way too slow and he had to abandon it. Happily though Vice2x is already quite playable on the GP2X. Cauldron 2 and Mayhem in Monsterland are confirmed to work.

http://gp2x.org/gp2x/vice/