CPT boards

[Jules Richardson]

On 10/06/2018 01:40 PM, Al Kossow via cctalk wrote:
> could be part of a 4200 or a VM
> 
> http://www.ricomputermuseum.org/Home/small-systems-at-ricm/cpt-4200-series-typewriter
> 
> since the date codes are early, i'd guess the 4200

Possibly, although there are quite a few ICs with 1976 and 1977 date codes 
which don't give the impression of being repair parts - I'm not sure what 
the lifespan of the 4200 was. Of course the Wikipedia article is quite 
light on details though, so perhaps there were other models not mentioned, 
or tweaks to the 4200's design to keep it 'current' as time went on.

> Mike might be able to ID the boards

I've dumped images of the six boards temporarily here:

   http://www.classiccmp.org/acornia/tmp/c1.jpg
   http://www.classiccmp.org/acornia/tmp/c2.jpg
   http://www.classiccmp.org/acornia/tmp/c3.jpg

and finally the smaller "tape board" is bottom-right in this group of misc.:

   http://www.classiccmp.org/acornia/tmp/c.jpg

   (I've no idea what the others are in that photo. Top little one is 
Sperry. There were lots of "industrial" boards in the scrap pile, though - 
CNC control boards and the like - so quite possibly not computer-related at 
all)

cheers

Jules