Re: AW5 vs WP 1.1 for 2e

[bieling@terra.es]

On May 25, 4:09 am, "Michael J. Mahon" <mjma...@aol.com> wrote:
>
> What made any simple "crystal swapping" approach to speeding
> the machine impractical was the synchronous integration of the
> processor and the video clock.  That very clever design would
> have required a complete re-working to speed the machine up
> without a cache-based approach.
>

Yes, but given an x MHz 6502, an x-(1/x) Mhz Apple II could have been
pretty easily done, just by assigning 1/x of the memory bandwidth to
the video DMA, one out of every x cycles, with almost no redesign
work.

--Jorge.