Kearney & Trecker Core memory, may be PDP8
useddec at gmail.com
Wed Nov 12 00:38:52 CST 2014
If it's 11/34 core, it should be a MM11-CP or DP
On Wed, Nov 12, 2014 at 12:30 AM, E. Groenenberg <quapla at xs4all.nl> wrote:
> Actually, this particular board (item #181565552717) is from DEC and
> it looks very similar (lettering etc) to the G652/H222 combo card
> I still have. My set came from a PDP-11 I believe it was from an 11/34.
> > On 2014-11-12 04:00, Jon Elson wrote:
> >> On 11/11/2014 07:33 PM, jwsmobile wrote:
> >>> 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.
> > 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
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