DEC boards unearthed

From: Ethan Dicks <ethan_dicks_at_yahoo.com>
Date: Sat Oct 16 14:24:26 1999

After several years of "emergency" storage, I am relocating a large pile of
mostly DEC stuff from a friend's basement. I am finding stuff that I have
been looking for and finding stuff I forgot I had. Today was diskpack and
circuit-board day (rack day comes later ;-)

The most striking thing I found was a lot of PDP-11 core memory. If anyone is
looking for some, I'm willing to trade it for PDP-8 core, something I can put
to better use. In addition to several PDP-11/20 4K stacks (H207), there are
a couple of H214 stacks and one hex-height 16k set, G235, H217C and G114. I
do have driver boards for the 4K stacks, but not all the backplanes (I rescued
as much as I could of the contents of an 11/20 from the dumpster at work
around 1988, but it just wasn't all in there). I might even still have the
CPU box, but it is likely that I don't have a power supply.

One of the other interesting items are a M7260/M7251 pair, one marked
"datapath", one marked "11/05 control". These are clearly the CPU for an
11/05, but will they go into an 11/04 or short (not BA-11) 11/34 chassis
for testing?

Finally, we come to an RK11D board set... M7254 through M7257. What else is
needed to make a working controller? A custom backplane? Paddle cards? I
think I've got an RKV11 box attached to an 11/03 (I haven't pulled it out of
the corner yet) If I'm missing too much of it, I can probably fix the RK11C
that I got with my first RK05 drives. I've never used it and neither did the
people I got it from (they wanted the drives for something else and already
had the controller). I would like to back up the several dozen RK packs I
moved today, too. I have several options for CPUs and OSes, but I need to
identify which RK controllers are going to work before I can see about spinning
off RK images.

We took some pictures with my friend's digital camera. I'll post a URL when
he gets them to me and I get them up on my page.

-ethan


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Received on Sat Oct 16 1999 - 14:24:26 BST

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