[Color Computer] [Coco] high density floppy controller mods

Mike Pepe lamune at doki-doki.net
Sun Aug 6 20:29:28 EDT 2006

jdaggett at gate.net wrote:
> Mike 
> Only FD500 controllers made after about 1982 or so. I have one that has 
> the WD1973 controller chip. 
> james

They weren't called FD500 until the very late 80's.

This board is copyrighted 1984, the date codes on the chips are all from 
early '84 as well.

The schematic references the 1793, and is copyrighted in 1983. So, it 
may be pot luck if the controllers have a 1793, 8877 or 8877A in them.

The 26-3129 (later known as FD-500) all have the 1773 controller, which 
isn't hackable.


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