Kearney & Trecker Core memory, may be PDP8

Mattis Lind mattislind at gmail.com
Wed Nov 12 01:41:44 CST 2014


Looking at page 3-17 of
http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp8/pdp8a/EK-8A001-OP-002_PDP-8A_Operators_Handbook_Sep76.pdf
shows that it is as far as I can see identical to the 16 k MM8-AB.

2014-11-12 8:13 GMT+01:00 Paul Anderson <useddec at gmail.com>:

> pic #4 shows a DEC core sticker on the back, but out of focus.
>
> On Wed, Nov 12, 2014 at 1:09 AM, jwsmobile <jws at jwsss.com> wrote:
>
> >
> > On 11/11/2014 9:12 PM, Jon Elson wrote:
> >
> >> On 11/11/2014 09:18 PM, Johnny Billquist wrote:
> >>
> >>> 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
> >>>>>
> >>>>>
> >>>>
> >>> The fact that the board have four edge connectors and not six totally
> >>> excludes PDP-11.
> >>>
> >> The first and last picture of the ebay listing above clearly has SIX
> edge
> >> connectors.
> >> And, in fact, a number of PDP-11 peripheral boards had only 4
> connectors.
> >> CPU boards and memory did usually have 6.
> >>
> >> Jon
> >>
> >>
> >>  I based my PDP8 on googling and looking for comments about the
> processor
> > type.  There was a history page which said they used PDP8s in their
> > designs.  I know that the 6 up is more common for PDP11, but wanted to
> > throw it out there.  I figured a core board of the right variety for $195
> > might be a steal since the seller didn't list it to be on the DEC
> hardware
> > searches on Ebay.
> >
> > Thanks for Al's comment on the 6800 board.  I see about half of all
> photos
> > being crap these days on ebay.  I was crossing fingers it would be a
> design
> > that started out as an actual dec, and maybe had a small board built up
> > with a Harris pdp processor on it.  I know that is a really long shot,
> but
> > not impossible.
> >
> > thanks for the comments.
> > Jim
> >
>


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