> > 1. If each of the SEGA Custom chips contains a Fujitsu MB86xxx that would be 5
> chips
> > responsible for graphic functions on 1 board, is this possible?
>
> Yup. The jobs are split between them because they're each relatively low-powered.
> Exactly how the split occurs isn't known. (The varying Sega custom chip numbers
> indicate different embedded ROM programs).
>
> > ) i found an embedded SPARClite Microprocessor called MB86933 (or his successor
> > MB86933H), which IMO is the chip, which is used on the Model 1/2 boards.
>
> That's not the chip. The MB86233 used by Sega is a dedicated math DSP with a custom
> Fujitsu architecture. We wish it was something as well-known as SPARC
I'll be along to post my response in a few hours ... 
- Stiletto
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