I own a dell azim x5 and downloaded Mame ce3 as well as 3 roms from starroms which specializes in selling roms legally. I tried tempest,paperboy and 720 degrees on your emulator. Tempest worked visually but when sound was enabled it made an repeating awful cracking distorted sound only and is not of the game. The other roms would tell you to press ok to start the game but when i do the screen simply goes blank and does not start the game(s). I pressed ok as you mentioned earlier by pressing left and right on my toggle button which started tempest just not the others. PLease help

Romer