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PDP-8 Minis
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Front View of HP-9100
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The PDP-8 Minicomputer


Front Panel of the PDP-8 S M L XL

I don't have an 8 yet, but am interested in obtaining one. I'm willing to trade my extremely rare PDP-11/R20 and cash for one, or for a PDP-8/S. A local institution has one that's being restored, and I've taken a few pictures on a recent trip there.

Left Panel of PDP-8 S M L XL

There are obviously some cards missing here. The story is that this 8 was abandoned, and some of the cards were sold off as trophies! :-( The metal box at rows A and B contains the core memory.

Right Panel of PDP-8 S M L XL

This is the right hand side panel. Slightly more cards are present here.

Bifurcated Backplane of PDP-8 S M L XL

This is one of the interesting design features of the PDP-8 -- there are two backplanes (the left and right panels shown above) and they are oriented back-to-back, and swing apart.

DF32 S M L XL

There are two DF-32s with this particular PDP-8, but alas one of them has been diagnosed as unfixable. I don't yet know the details of that particular analysis... This picture is of the "serviceable" unit.

PDP-8 Power Supply S M L XL

A nice, simple, typical DEC power supply for the era. With authentic vintage dust too :-)

PDP-8 Expansion Cabinet S M L XL

Finally, this is a picture of the second cabinet; it's full of uninventoried options.

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