Keripo has released a new version of the GBA Emulator for iPod

Heres whats new:

* complete sound removal (noticeable speed-up for no-sound build)
* screen blitting code cleanup (slight speed-up)
* added alpha blending on/off setting (can add speed-up at cost of graphics)
* binary shift for a few operations (small speed-up; Exophase blames gcc)

http://ipodlinux.org/IgpSP