Hi.
I have this pad interface http://www.jammaboards.com/store/pc-mame-ps3-to-arcade-controller-usb-interface-pcb-kit-pc2jamma-usb.html
Android detects it and can setup the buttons manually at input setup.
All buttons are detected correctly. But, in game, none of player 2 buttons works. I have assigned player 1 buttons to player 2 buttons and doenst work.
I think that the emulator assumes that device 1 is for player 1 and device 2 is for player 2, but my device is for 2 players.
Others emus like mamedroid works properly.
Regards and thank you for your work and this great emu.