Hey, FoothillsGeek here! I saw this thread last night and checked to see if I had a manual for it - it does not look like I do. Most of the Plessey documents we received are for core memory boards.
However, when I indexed the docs we received, I did so by model number (PM-xxxx) and not by part number. So, if I can find our stack of Plessey docs, I'll flip through them again to look for the PN. On Thu, Oct 21, 2021 at 8:49 AM steven--- via cctech <cctech@classiccmp.org> wrote: > > > On 10/19/2021 12:57 PM, Nigel Johnson Ham via cctech 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? > > FoothillsGeek on VCFed had a number of Plessey memory manuals and had > scanned > some, as mentioned here > https://www.vcfed.org/forum/forum/genres/dec/73251-dec-documents-on-manx > > -- *Derek Newland* | (828) 234-4731 | derek.newl...@gmail.com
