@Apocalypse so from All these MXX boards which one is in your opinion the preferred. I mean the one that could accomodate more games because of the amount of RAM and availabilty? M82?
For instance I've been able to convert Pound For Pound (only M85 game) to R-Type in MAME. However MAME also states most inputs on Pound For Pound aren't wired on the JAMMA edge connector cause the game use trackballs only. I wonder if it's possible to add jumper wires for the missing input connection and make it run like a M84 board?
I'd say M82/M84 are the most compatible boards but need extensive code modification to support M72/M81 games (or crazy wire mod).
M81 is a good alternative to M72, way cheaper and supports all M72 games with few modifications in code (to circumvent the MCU protection chip and accommodate different RAM offsets).
Looking for an OutRun board.