Franxis has updated his port of MAME to the GP32, heres whats new:
TheGrimReaper: Frontend improvements. Access to new options screen pressing START+SELECT simultaneously: Delete ROMs, reset configuration and high scores files, re-assign controls, adjust analog controls sensitivity, update available game list, etc.
TheGrimReaper: Improvements in the game options screen. All options are changed with the joypad.
TheGrimReaper: New options are available to change underclock/overclocking for emulated processors and audio CPUs. Depending on the game, decreasing more CPU clocks gives a nice speed improvement. Play with these options :-)
TheGrimReaper: Control improvements in Battle Zone.
TheGrimReaper: Sprites corrected in Nibbler and Fantasy.
Franxis: Accurate sound option added. Sound is better but emulation is slowed. It disables some speed hacks in the sound library.
Franxis: Minor optimizations and source code cleaned up.
Downloads Here --> http://gp32emu.dcemu.co.uk/mamegp32.shtml
Official site --> http://www.talfi.net/gp32_franxis/