Home Page Forums MAME MAME TMS-09xx/1xxx thread (was New Dumps)

Yeah, I expect simply a larger PLA for the TMS1270. As for the CMOS devices, another difference is that unlike the Motorola CMOS chips they have a 3-level stack, similar to TMS1400.

@Sean: Could you upload the partial electronic dump of JR55? To check if the layout is the same(31 unique banks).