Xerox 820

[Randy McLaughlin]

From: "Scott Stevens" <chenmel at earthlink.net>
Sent: Sunday, May 15, 2005 1:01 AM


> On Fri, 13 May 2005 09:29:23 -0700
> Paxton Hoag <innfoclassics at gmail.com> wrote:
>
>> There was a business in Beaverton who sold a simple board to run both
>> 5 1/4" drives and 8 inch drives on the Xerox 820 at the same time.
>> Evergreen technology??? Closed about 1990. I seem to remember it
>> wasn't hard to build.
>>
>> If anyone comes uiop with the info I would be intersted too as I still
>> have an 820.
>>
>> Paxton
>> Astoria, OR
>>
>
> I'm fairly certain that my BigBoard (I believe it was a clone of the
> Xerox 820, I know it's an exact workalike) has a 50 pin connector for
> the diskette drive.
>
> I haven't ever brought up this particular BigBoard, but I had another
> just like it in the 80's, which I used with 8" DSDD (720K) diskettes.
>
> As I've said before I have my BigBoard all squirreled away with complete
> docs including schematics.  I'm involved in a BUNCH of spring
> housecleaning and hope to locate it in the near future.
>
> -Scott

The 820 is a clone of the BigBoard with some modifications.  The BigBoard 
was cloned by many including KayPro.

I have a large stack of Micro Cornucopia magazines that supported them I 
need to scan.

If anyone can scan there docs and or send me disk images of the boot disks 
I'll post them on my site.

This goes for any classic system, I have 7gb of webspace which should hold 
quite a few disk images :-)

I am particularly interested in CP/M, Cromemco CDOS/CROMIX, and UCSD Pascal 
and related sources for CBIOS & utilities but I am happy to post most 
classic OS's (unless copyright holder objects).


Randy
www.s100-manuals.com