--- Tony Duell <ard_at_p850ug1.demon.co.uk> wrote:
> > Hmm, why would the 6509 have more address space than a 6510? Or is
>
> Why not? There is no reason why a higher numbered chip should be
> 'better'...
Exactly - the 6504 is a 6502 with few address lines available to the
outside.
> Not at all. The ports on the 6510 are just that -- ports. You could use
> them for whatever you wanted, the C64 happens to use them to control the
> memory map using external circuitry.
And the cassette.
-ethan
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Received on Mon Jun 03 2002 - 00:54:30 BST