[TUHS] PDP-11/23 plus minicomputer

Tim Shoppa shoppa at trailing-edge.com
Wed Aug 10 07:54:35 AEST 2005

> I thought Unix was written and used on PDP-11 systems.

It was.  So was DOS-11, RT-11, RSTS/E, RSX-11-*, IAS, etc.

> Which PDP-11 systems ought I keep an eye out for?

Anything but the very lowest end (11/04, 11/03, etc.) if you want
to run Unix.

While Unixes show up on -11's in many applications, they were
least popular in industrial-control type situations, which is where
most -11's are used.  Of course, just to complicate things, they
were using Unix variants on 11-based industrial control systems too!
And you are right, it is indeed possible that this particular 11/23
has some Unix packs in the deal, I'm just pointing out that it's

And you were especially correct that a buyer would be unwise to
ditch the drives and packs.  An -11 is more than just the CPU box,
if you want to do anything even vaguely useful/interesting!


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