North Star Horizon

From: Allison J Parent <allisonp_at_world.std.com>
Date: Fri May 15 09:58:47 1998

<Well, I am looking for a decent DEC PDP-series machine though I don't kno
<(yet!) a lot about them. I've programmed a couple of DEC machines in
<assembler and Pascal during various studies at the local college. That i
<somewhat important to be a little prepared but it doesn't amount to much
<because I have had virtually no hands-on hardware fun yet. Now I want to
<get one to preserve and actually learn more upon. I've not asked here on
<the list yet for one that's available, but someday within the next year o
<so I will ask if one doesn't show up nearby to me beforehand.

While I'm not against it... this is an example. Like what kind of PDP-??
There are PDP-11s, -8s, 10s and others, all different, some quite large.
Even within a family like PDP-11 there are unibus machines (11/20, 11/34,
11/44...), Qbus machines (LSI-11, 11/23, 11/73...), CTbus (pro350, 380),
bounded PDT-11/130, pdt11/150. There is where a little research
beforehand is needed. A pro350 is desktop, an 11/44 could easily be three
racks and a washing machine disk. PDP-8s there are at least three major
buses used and variations in the family ranging from the small decmates to
an older straight-8 or 8I. When put in context "I want a PDP." is a
pretty broad statement and could put you in the position of trying to
handle something larger in scale (or smaller) than desired. I'm not
saying don't but, having a PDP-10 (ka10) means you have at least 40-200
square feet just to set it down and three phase power to run it.

<My curiosity at wanting to learn how things work, such as what I've
<reported above, has served me very well. I would not have the engineerin
<job such as I have now nor the activity I have in the antique radio

Part of where my interest in engineering lies and originated from.

Allison
Received on Fri May 15 1998 - 09:58:47 BST

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