On Tue, 20 Jun 2000, Glenn Saunders wrote:
> At 09:45 PM 6/20/2000 -0400, you wrote:
> >No. The 128 bytes of RAM are in addition to the register space.
>
> I thought that would be a little constraining, given that the designers
> were contemplating 64 bytes of RAM at one time.
>
> Where is this memory stored then, inside the TIA?
>
> Also, isn't the 128 bytes considered the 6507's page zero as well?
The 128 bytes of RAM are inside the RIOT..."RAM,I/O,TIMER"
Yes the RIOT RAM is mapped into the 6507's address space at $80-$FF.
The TIA registers are mapped into the other half of zero page at $0-$7F.
-Chris
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