[ClassicCMP] Re: What's a WD2793A chip?

From: Richard Erlacher <edick_at_idcomm.com>
Date: Sat Feb 5 14:55:35 2000

It sat as a mazzanine board on the 820 board, in place of the 1771 in order
to enable the 820 to handle MFM format.

regards,

Dick
-----Original Message-----
From: Joe <rigdonj_at_intellistar.net>
To: classiccmp_at_classiccmp.org <classiccmp_at_classiccmp.org>
Date: Saturday, February 05, 2000 1:26 PM
Subject: Re: What's a WD2793A chip?


>Richard,
>
> Exactly what was add-on supposed to do for the Xerox 820?
>
> Joe
>
>
>At 08:46 AM 2/5/00 -0700, Richard wrote:
>>There may well have been one of these. I've got a one or two of the ones
>a Denver company made for the Xerox 820 to insert a 1791/95 in place of the
>1771. I even have the writeup somewhere, but no software patches. It just
>seems that I never have both the mezzanine board and the doc at the same
>time.
>>
>>Dick
>> -----Original Message-----
>> From: No Name <lsommo_at_hotmail.com>
>> To: classiccmp_at_classiccmp.org <classiccmp_at_classiccmp.org>
>> Date: Saturday, February 05, 2000 8:49 AM
>> Subject: Re: What's a WD2793A chip?
>>
>>
>> Wasn't there an add-on developed for the Xerox 820/ Big Board that
>used the 2793? As I recall it was a a simpler (and less expensive) circuit
>as compared to the other add-on being offered at the time. I had one and
>lost it (as well as my 256K memory expansion board) during the course of my
>moves. If anyone has the schematics for it I'd like to try and put another
>one together.
>>
>> Lou
>>
>>Attachment Converted: "C:\ATTACH\ReWhat'1.htm"
>>
>
Received on Sat Feb 05 2000 - 14:55:35 GMT