> Hello,
>
> Does somebody know where I can find info about the R800 cpu used in the
> TurboR's.
> Is it correct that the CPU in the TurboR runs at 7 MHz and that it
> executes his commands 4 times as fast a a Z80. Does anybody have
> timetables of this CPU ? And how about the fact that it is faster if the
> upper 8 bits of the address doesn't change, can somebody confirm this
> ???
All true. About the 'upper 8 address bits', it only works with instructions,
not with data.
And errrm... it might be a bit stupid to say but the Compass turboR docs are
quite complete. And furthermore there was a booklet with R800 timing in some
MCCM issue... You could also ask Patriek... He's got quite complete docs on
the turboR, including very extended timetables. His email: [EMAIL PROTECTED]
~Grauw
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