Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!husc6!bu-cs!bzs
From: bzs@bu-cs.BU.EDU (Barry Shein)
Newsgroups: comp.arch
Subject: Re: PDP-10 user I/O (really: third-party operating systems)
Message-ID: <23002@bu-cs.BU.EDU>
Date: 31 May 88 02:42:24 GMT
References: <46500018@uxe.cso.uiuc.edu> <5612@aw.sei.cmu.edu> <3327@phri.UUCP>
Organization: Boston U. Comp. Sci.
Lines: 23
In-reply-to: roy@phri.UUCP's message of 31 May 88 00:25:19 GMT


I'm sure the list of third-party operating systems is much longer than
you suspect. I'd guess there were zillions for the PDP-11, tho few
were sold, mostly in-house things for various purposes, usually some
flavor of real-time work. I've run into a few over the years.

Some notable ones (not exclusively PDP-11) are PICK (runs on several
architectures), TS-11, MS/DOS (right?), MTS (Michigan Time Sharing,
370 architecture), RAX (370), MUSIC (son of RAX), WYLBUR (370), that
OS which ran on 10's which was a library system (I think Boston Public
ran one), a few Unix clones come to mind (UNOS, UNIVERS, etc), that
LSI-11 O/S that came with the graphics terminal from some university
[I think it was sold commercially for a while, was that Cornell?], ITS
(PDP-10), WAITS (PDP-10), CTSS, Multics (sort of, consortium effort
including vendor, GE), ATLAS (high-brow trivia), HASP (370, NASA), I'm
sure I'm forgetting dozens I've run into...the 370 alone probably had
dozens, seems I used to run into poor souls supporting such things
regularly, then again it seemed like every CMS program became an OS
sooner or later...Doesn't Compuserve run their own OS on their 10s?

I guess some of those aren't quite "significant", but what the heck...

	-Barry Shein, Boston University