Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id IAA29341 for pups-liszt; Fri, 9 Jun 2000 08:43:34 +1000 (EST) (envelope-from owner-pups@minnie.cs.adfa.edu.au) Received: from mail.enteract.com (mail.enteract.com [207.229.143.33]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id IAA29337 for ; Fri, 9 Jun 2000 08:43:29 +1000 (EST) (envelope-from enf@shell-2.enteract.com) Received: from shell-2.enteract.com (enf@shell-2.enteract.com [207.229.143.41]) by mail.enteract.com (8.9.3/8.9.3) with ESMTP id RAA75007; Thu, 8 Jun 2000 17:41:25 -0500 (CDT) (envelope-from enf@shell-2.enteract.com) Received: (from enf@localhost) by shell-2.enteract.com (8.9.3/8.9.3) id RAA99748; Thu, 8 Jun 2000 17:41:25 -0500 (CDT) (envelope-from enf) Date: Thu, 8 Jun 2000 17:41:25 -0500 (CDT) Message-Id: <200006082241.RAA99748@shell-2.enteract.com> From: Eric Fischer To: pdub@accesscom.com, pups@minnie.cs.adfa.edu.au Subject: Re: unix precursors In-Reply-To: <393F04A1.2A71E151@accesscom.com> References: <200006072250.RAA82201@shell-1.enteract.com> <393F04A1.2A71E151@accesscom.com> Sender: owner-pups@minnie.cs.adfa.edu.au Precedence: bulk Paul West writes, > BTW, there apparently were two different timesharing systems developed > for the PDP-1, the second one coming from Bolt, Beranek, and Newman > (BBN). Thanks for reminding me about the Jack Dennis article -- I had forgotten about that one. There were, I think, at least *four* time-sharing systems for the PDP-1. Besides the MIT and BBN ones, there was also the Hospital Computer Project (I'm not sure whether that one was descended from the early BBN system or was written from scratch) and the THOR system at Stanford. I can't give proper citations because I'm currently 2000 miles from my book collection. eric