Looking for info on memory

Chris Zach cz at alembic.crystel.com
Tue Oct 19 16:21:04 CDT 2021


Sounds familiar, got a picture of the board somewhere?

C

On 10/19/2021 12:57 PM, Nigel Johnson Ham via cctalk wrote:
> I am trying to bring up an 11/23 system in a BA23 box, and the only
> memory i have is an obscure Plessey one. The only identification is the
> p/n 705920 with dash-100 in white ink. By counting the chips I make it
> 4MB, but it does not respond. Since it takes the full 22-bit memory
> space I can't see how any jumpers would change its accessibility. Does
> anybody have a manual?
> 
> any help appreciated,
> 
> Nigel Johnson
> 


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