He found one on the web earlier today that should be the right one and when loaded in mame acts how the real hardware does with a dead battery but the (minor) issue is we don't know if it's the right revision or if it's the same crc bit for bit as it would be installed on the chip. We might as well wait for him to get around to checking the chip on the board and see if it's something I can dump, that removes any questions of doubt. My 2 cents.