Without any rev letters after the M8190, what you've got is almost certainly the old 15MHz non-FPA-capable KDJ11B. Probably very similar to the CPU in the Micro-11/73 you got from SERF at UBC. (Or, at least I think like the Micro-11/73 I seem to recall you getting from SERF. There was a Micro-11/23 and a KA650 in a BA23 I also seem to recall...) Tim.