Looking for info on memory

[Nigel Johnson Ham]

It's just a memory board and looks like one!

Picture here:

https://www.mediafire.com/file/ive7i7ax6zdibv3/Screenshot_20211019_185019.png/file

cheers,

Nigel


On 2021-10-19 5:21 p.m., Chris Zach via cctalk wrote:
> 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
>>