[Coco] Controller question

[Brian Blake]

When I get home, I'll compare it to my FD-500. IIRC, weren't the FD-500 
and 501 overlapped a bit in production? I thought the only real 
difference was the size...? Maybe it's the 3029/FD-500 that were 
overlapped...

Too many brain cells have died...


On 8/29/2012 4:52 PM, jdaggett at gate.net wrote:
> bill
>
> Not really sure. It does not look like my FD501 or FD502 controllers. FD500? I always
> thought the FD500 was the large controller that used the WD1793 chip. Looking at the date
> codes on some of the chips, it is the time frame of the FD501. Could there have been
> multiple versions of the FD501? I am not sure on that at all. Looking at the date codes on the
> chips this could not have been built before the 32nd week  of 1984. That would put it in the
> FD501 era used on the Coco2. My FD502 all has 1987 date codes.
>
> james
>
>
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