----- Original Message -----
From: "Marko Mäkelä" <msmakela@cc.hut.fi>
> I was thinking of a somewhat simplified design. First of all, I'd omit
> the "interrupt after transfer" feature, since it is pretty useless. When
> it is enabled, the CPU will be interrupted right after the write command
> (to $df01 or $ff00) that initiated the transfer. Also, I don't know if
> the verify and swap commands are worth the trouble. I don't see how you
> could use an 8-input and gate in the verify operation. Of course there
> are bigger logic chips than the 2064. Maybe the 2096 would be big enough
> for implementing also an Action Replay like device in addition to a fully
> backwards compatible REU clone.
>
Marko Makela-
I would go for a bigger logic chip. A full REC emulation is needed to ensure
that no Commodore programs are 'broken' by less than 100% REC compatibility.
For example, GEOS uses the hardware SWAP feature, so it is indeed worth the
trouble.
Enjoy.
-Todd Elliott
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