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Re: 65816 coprocessor options..
Supertimer wrote:
> phoenyx <quazar@dcnet2000.com> wrote:
>
> >Pim Blokland wrote:
> >
> >> Processors didn't do that in those days, not even the 8086!
> >>
> >
> >The early PC cpu's used 24 bit addressing, it was very close
> >to a bank switch method. By changing a register, you changed
> >the memory bank. With the model I suggest, it would take at
> >least another register or soft switch.
>
> ? 24-bit addressing = Apple IIGS & 65C816 ?
No, the x86 systems. The GS in native mode had it down pat. In
many ways, maintaining compatability hurt the GS as much as it
helped.
Phoenyx