Looking for California Computer Systems Z-80 CPU Card

Marden P. Marshall mardy at voysys.com
Sat Dec 29 08:23:27 CST 2007


On Dec 28, 2007, at 11:16 PM, Dave McGuire wrote:

> On Dec 27, 2007, at 9:34 PM, Marden P. Marshall wrote:
>> I'm looking to get my hands on a California Computer Systems Model  
>> 2810 Z-80 CPU card.  This is an S-100 bus card.  Anybody out there  
>> have one they want to sell?
>>
>> I'm also looking for a readable schematic for this card.
>
>  I have one of these in my IMSAI system; I've had it for nearly 25  
> years.  I used it daily back then.  It's definitely not for sale.  I  
> did see one go on eBay a few months ago for (I think) about $100.
>
>  I've put the documentation for this board (which includes a sorta- 
> readable-but-not-great schematic) up at:
>
>  http://www.neurotica.com/misc/CCS_2810_CPU_Manual.pdf
>

Thanks for the pdf Dave.  Unfortunately that's the same one I've found  
floating around and the schematic is so badly pixelated that the  
details can't be made out.  I did hear from Herb Johnson at  
retrotechnology and he has a copy for sale which includes a full size  
foldout schematic.  I think I'm going to bite the bullet and buy a  
copy from him.

By the way, that PDP-11/70 looks awesome!

-Mardy




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