Re: V7M

V7M was the DEC distribution of V7 (pre Ultrix days). Fred Canter did most of the work, along with Jerry Brenner and Armando Stettner. It supported non ID space machines, and some of the newer DEC hardware. My manual lists it as working with :- CPUS:- 11/23, 34, 44, 45/50/55, 60 and 70 Disks:- RL02, RK06, RK07, RM02/3, RP04/5 Tapes:- TU10, TE10, TU16, TE16, TS11 There was a strip down of V6 called Miniunix that would run on machines without memory management, such at the 11/20, 05, 10 and 35/40 (without MMU option). It required a full 56Kb machine, used the first 28Kb for the kernel and swapped the last 28Kb for each process. Pipes worked by using a temporary inode to store the data and swapping the processes. It was realllllllll slow. The was also a similar version for 11/03's. I remember that there was an early bug in that updates would always rewrite open inodes (last access time had changed). You could physically wear out a floppy disk, since it was forever rewriting the sector with the inode for the console terminal. Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id QAA00853 for pups-liszt; Thu, 2 Sep 1999 16:07:04 +1000 (EST) Received: from mpl.ucsd.edu (chiton.ucsd.edu [192.135.238.128]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id QAA00845 for <pups(a)minnie.cs.adfa.edu.au>au>; Thu, 2 Sep 1999 16:06:56 +1000 (EST) Received: (from cdl@localhost) by mpl.ucsd.edu (8.8.8+Sun/8.8.8) id XAA06196 for pups(a)minnie.cs.adfa.edu.au; Wed, 1 Sep 1999 23:06:50 -0700 (PDT) Date: Wed, 1 Sep 1999 23:06:50 -0700 (PDT) From: Carl Lowenstein <cdl(a)mpl.ucsd.edu> Message-Id: <199909020606.XAA06196(a)mpl.ucsd.edu> To: pups(a)minnie.cs.adfa.edu.au Subject: Re: V7M Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Well, actually the M was for Modified. Particularly modified to work with some more DEC peripherals. What ran on 11/20's was Mini-Unix, which was a stripped-down 6th Edition. By the way I'm not sure that the PUPS archive has a Mini-Unix tape. I have one, although it has not been read since the days when I had an 11/20. carl carl lowenstein marine physical lab u.c. san diego {decvax|ucbvax} !ucsd!mpl!cdl cdl(a)mpl.ucsd.edu clowenstein(a)ucsd.edu Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id QAA00913 for pups-liszt; Thu, 2 Sep 1999 16:11:58 +1000 (EST) Received: from henry.cs.adfa.edu.au (henry.cs.adfa.edu.au [131.236.21.158]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id QAA00907 for <pups(a)minnie.cs.adfa.edu.au>au>; Thu, 2 Sep 1999 16:11:51 +1000 (EST) Received: (from wkt@localhost) by henry.cs.adfa.edu.au (8.9.2/8.9.3) id QAA00770; Thu, 2 Sep 1999 16:09:16 +1000 (EST) From: Warren Toomey <wkt(a)cs.adfa.edu.au> Message-Id: <199909020609.QAA00770(a)henry.cs.adfa.edu.au> Subject: Re: V7M In-Reply-To: <199909020606.XAA06196(a)mpl.ucsd.edu> from Carl Lowenstein at "Sep 1, 1999 11: 6:50 pm" To: cdl(a)mpl.ucsd.edu (Carl Lowenstein) Date: Thu, 2 Sep 1999 16:09:16 +1000 (EST) Cc: pups(a)minnie.cs.adfa.edu.au Reply-To: wkt(a)cs.adfa.edu.au X-Mailer: ELM [version 2.4ME+ PL43 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk In article by Carl Lowenstein: Yep, it's in Distributions/usdl/Mini-Unix. It's not in the research/ dir because it was not done in the labs, but elsewhere. Cheers, Warren Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id SAA00659 for pups-liszt; Thu, 2 Sep 1999 18:07:17 +1000 (EST) Received: from zed.ludd.luth.se (zed.ludd.luth.se [130.240.16.33]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id SAA00643; Thu, 2 Sep 1999 18:05:30 +1000 (EST) Received: from father.ludd.luth.se (ragge(a)father.ludd.luth.se [130.240.16.18]) by zed.ludd.luth.se (8.8.5/8.8.5) with ESMTP id KAA22337; Thu, 2 Sep 1999 10:05:25 +0200 From: Anders Magnusson <ragge(a)ludd.luth.se> Received: (ragge@localhost) by father.ludd.luth.se (8.6.11/8.6.11) id KAA11504; Thu, 2 Sep 1999 10:05:24 +0200 Message-Id: <199909020805.KAA11504(a)father.ludd.luth.se> Subject: Re: KDA50 woes To: quasijarus(a)minnie.cs.adfa.edu.au Date: Thu, 2 Sep 1999 10:05:23 +0200 (MET DST) Cc: pups(a)minnie.cs.adfa.edu.au, quasijarus(a)minnie.cs.adfa.edu.au In-Reply-To: <9909020115.AA00610(a)meson.jpsystems.com> from Michael Sokolov at "Sep 1, 99 08:15:23 pm" X-Mailer: ELM [version 2.4ME+ PL15 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Well, something I think... :-) [...] The IPL autodetect code has seemed to me as unneccessary. You know that the KDA50 will always interrupt at spl5, so you can hard-code it in the interrupt driver and nuke the autodetect code. The same with the other drivers that can be on Qbus: if (uh->uh_type == QBA) spl5(); -- Ragge