It has been suggested to me that since the 11/34a MMU doesn't support separate instruction and data space, certain versions of UNIX are not suitable. Does anyone out there have any idea which versions of UNIX require separate I+D space? Cheers, Bob. -- ---------------------------------------------------------------------------- Robert Manners Osney Laboratory rjm(a)swift.eng.ox.ac.uk Dept of Engineering Science University of Oxford 01865 246561 x 162 Try: http://swift.eng.ox.ac.uk Linux - the only choice "Wall Street or Crack Dealer Avenue, the last routes left to the American Dream" - Jello Biafra ---------------------------------------------------------------------------- Received: from sunic.sunet.se by minnie.cs.adfa.oz.au (8.6.8/8.3) with ESMTP id VAA02565; Fri, 10 Nov 1995 21:23:48 +1059 Received: from Minsk.DoCS.UU.SE by sunic.sunet.se (8.6.8/2.03) id LAA05761; Fri, 10 Nov 1995 11:23:57 +0100 Received: by Minsk.DoCS.UU.SE (Sun-4/630, SunOS 4.1.2) with sendmail 5.61-bind 1.5+ida/ICU/DoCS id AA01251; Fri, 10 Nov 95 11:23:56 +0100 From: Johnny Billquist <bqt(a)Minsk.DoCS.UU.SE> Date: Fri, 10 Nov 95 11:23:55 +0100 (MET) Reply-To: bqt(a)Minsk.DoCS.UU.SE To: rjm(a)swift.eng.ox.ac.uk (Bob Manners) Cc: oldunix(a)minnie.cs.adfa.oz.au (OldUnix MailingList) Subject: Re: Which versions for 11/34 (Sep I+D space) In-Reply-To: Your message of Fri, 10 Nov 1995 09:47:43 +0000 (GMT) Message-Id: <CMM.0.90.0.815999035.bqt(a)Minsk.DoCS.UU.SE> Steve Schoultz is really the one to answer this question, but I seem to remember that BSD2.9 was the last version which worked on non-I/D-space systems. Johnny Received: from sunic.sunet.se by minnie.cs.adfa.oz.au (8.6.8/8.3) with ESMTP id VAA02562; Fri, 10 Nov 1995 21:23:08 +1100 Received: from Minsk.DoCS.UU.SE by sunic.sunet.se (8.6.8/2.03) id LAA05690; Fri, 10 Nov 1995 11:23:06 +0100 Received: by Minsk.DoCS.UU.SE (Sun-4/630, SunOS 4.1.2) with sendmail 5.61-bind 1.5+ida/ICU/DoCS id AA01202; Fri, 10 Nov 95 11:23:04 +0100 From: Johnny Billquist <bqt(a)Minsk.DoCS.UU.SE> Date: Fri, 10 Nov 95 11:23:03 +0100 (MET) Reply-To: bqt(a)Minsk.DoCS.UU.SE To: risner(a)heathers.stdio.com (James Risner) Cc: oldunix(a)minnie.cs.adfa.oz.au In-Reply-To: Your message of Thu, 9 Nov 1995 08:19:36 EST Message-Id: <CMM.0.90.0.815998983.bqt(a)Minsk.DoCS.UU.SE> I think it should go there, anyway. Johnny Received: from wlv.iipo.gtegsc.com by minnie.cs.adfa.oz.au (8.6.8/8.3) with ESMTP id DAA03199; Sat, 11 Nov 1995 03:46:56 +1059 Received: (from sms@localhost) by wlv.iipo.gtegsc.com (8.6.10/8.6.12) id IAA18106; Fri, 10 Nov 1995 08:46:36 -0800 Date: Fri, 10 Nov 1995 08:46:36 -0800 From: "Steven M. Schultz" <sms(a)wlv.iipo.gtegsc.com> Message-Id: <199511101646.IAA18106(a)wlv.iipo.gtegsc.com> To: oldunix(a)minnie.cs.adfa.oz.au, rjm(a)swift.eng.ox.ac.uk Subject: Re: Which versions for 11/34 (Sep I+D space) Bob - The last version of UNIX for the PDP11 which stood a chance of running on a non split machine was 2.9BSD. I'd expect it to be a very tight fit though because even on a split I/D machine we ended up overlaying the kernel (but then even V7 took overlays to fit - which we hacked into the kernel, at least in the environment here). A long long time ago I did squish a V7 system into an 11/23 - not a pretty sight, each command you ran caused the others on the system to be swapped out (do a "ls -l" and watch the shell get swapped, when the 'ls' finished then the shell would be swapped back in, etc.) V6 would be a better match for a non-split (248kb max) machine. By the time V7 was out the 11/70 was being used as the development platform and split I/D was becoming more and more necessary. Steven Schultz sms(a)wlv.iipo.gtegsc.com