12 Nov
2014
12 Nov
'14
4:01 a.m.
The first board is definitely a DEC core board. If it will help anyone I
can pull a MM8-A and MM11-D and compare them to the pic to see which.
I have hundreds of DEC compatible boards here including Warner Swaysea,
White/ Sunstrand, K/T, G/L, etc. if anyone of someone interested in them.
BTW, I have a few people sorting for me and they are making progress.
On Tue, Nov 11, 2014 at 9:18 PM, Johnny Billquist <bqt at update.uu.se> wrote:
On 2014-11-12 04:00, Jon Elson wrote:
On 11/11/2014 07:33 PM, jwsmobile wrote:
The fact that the board have four edge connectors and not six totally
excludes PDP-11. As for hex size with metal handles, that was used on the
8/A. (Which indeed is late in the PDP-8 game, but then again, it wasn't
until the 8/A that you saw hex boards either, so if this would be for a
PDP-8, it would have to be an 8/A, since no other model fits the hex
boards.)
But this is not 8/A core memory either, since those actually have all six
connectors on the board, even if only a few signals were used on connector
5, and no signals were used on 6.
But since this isn't even DEC stuff, it could still possibly have been
something for a PDP-8. PDP-11 is still out of the question because of the
four connectors.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
I can't tell for sure, but this auction may
be for PDP8 core board.
KT-KEARNEY-TRECKER-ASSY-KT83-0933-KT84-020-SYSTEM-BOARD
http://www.ebay.com/itm/181565552717
Boy, that SURE looks like PDP-11 memory, not PDP-8.
The cast metal stiffener I
think came in at least very late in the game
for the PDP-8. PDP-8s usually had the colored plastic pull handles.