MAME v0.71 for PSP r0.1 by TMK, while XMAME is build on the XMAME v0.37 sources, this build uses the v0.71 source code. The only playable game for now is Mr. Do!, and the PBP must go into the MAMEPSP folder and the rom in ROMS sub folder. Controls are as follows:

[SIZE=1]X = returns to game list
L+R+START = finish
L = TAB Menu
R = Pause
SELECT = Coin
START = Start[/SIZE]