Unlike standard MAME cores that stay fixed to a specific historical version, is an evolving core based on MAME 0.78 (from 2003). Developers have "backported" hundreds of game drivers and improvements from much newer versions of MAME (up to 0.188) into this lightweight framework. MAME 2003 core VS MAME 0.78
It is difficult to pick and choose individual games to move to a handheld device. 3. Split Set mame 2003 plus romset archive