19 Oct
2021
19 Oct
'21
2:21 p.m.
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