[Coco] How about a new FDD Controller?
neilsmorr at hotpop.com
Fri Nov 5 17:27:09 EST 2004
----- Original Message -----
From: "Jim Cox" <jimcox at miba51.com>
> Besides time, money, and interest, what are the major
> obstacles to someome building a new Floppy Controller for
> the CoCo?
> From what I understand, it's primarily just finding or
> making a replacement for the Western Digital chip. If
> people are attempting to make and PFGA version of the 6X09
> and the GIME, shouldn't the Western Digital chip be
I'd be inclined to look at the chip used for Intel PCs. If it has extra
functions, perhaps those could be utilized too. I tried, and I believe
others have also, to figure a way to use the ISA FDC/HD/serial/parallel
cards, but it seems there's no good way to map them to a Coco.
Another choice would be to use a Microchip PIC chip, which can run 20 MHz,
to emulate the controller.
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