Most of he roms don't work on mame4all.
It's nice emulator with nice gui and excellent setup screen,just needs better compatibility.
The gp2x mame emulator plays more roms and is one of the best mame emulator on any handheld,in a way pandora one is disappointing,when gp2x play more and it did run full speed with no problem plus pandora doesn't have fba an cps2 emulators.
Which mame emulator play fba and cps games.
The neo geo emulator can it play home version games,it's keeps on playing arcade mode games.