Re: 16 MB REU clone

From: Martijn van Buul (
Date: 2001-08-24 13:10:05

Ruud Baltissen wrote:
> Hallo allemaal,
> Bogax:
> > I wonder if memory to memory transfers within the expansion memory
> > and independent of the CPU (and not limited to the CPU's bus speed
> > or width) might be useful, in which case an interrupt would also
> > be useful.
> Please explain more.

I think Bogax means transfers from expansion mem to expansion mem. (I'm
not sure the original REU supported this. Actually, I think it didn't) These
transfers could be completely internal - no reason to claim the C64's
bus, since it's not involved at all. In *that* case, an interrupt could very
well be handy.

Furthermore, since you're not limited to the 1MHz bus of the C64,
you could speedup those transfers.

    Martijn van Buul - -
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   Kees J. Bot: The sum of CPU power and user brain power is a constant.

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