UAE4all is an open source Amiga emulator for the GP2x.

Changes:

* Cyclone integrated.
* GnoStiC’s blitter optimizations added.
* Added switching between SDL_HWSURFACE and SDL_SWSURFACE for better performance and to avoid menu crashes.
* SDL_Mixer removed to reduce binary size and for minor performance improvement.
* FPS counter added (enable status line to see).

http://notaz.gp2x.de/releases/uae4all_gp2x_0.7.0.zip