Kearney & Trecker Core memory, may be PDP8

[Paul Anderson]

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.
>
> Ed
>
> > 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
> >                                    ||  on a psychedelic trip
> > email: bqt at softjar.se             ||  Reading murder books
> > pdp is alive!                     ||  tryin' to stay hip" - B. Idol
> >
>
>
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