Not much discussions on this chip. This Namco custom is extremely responsive for an SCI interface (at least after doing some link behavior testing on both my Motocross Go pcbs). I'm thinking it's an MCU. I may be able to get one from an untested Namco System 2 pcb but I'll have to ask beforehand. Also would like to contact Caps0ff to donate this chip or so (unless someone else does it first).
Thanks all.
Thanks all.