Article View: alt.folklore.computers
Article #625494Re: PDP 11/40 system manual
From: Charlie Gibbs
Date: Tue, 14 Aug 2018 01:38
Date: Tue, 14 Aug 2018 01:38
27 lines
2726 bytes
2726 bytes
On 2018-08-10, hanc...@bbs.cpcn.com <hanc...@bbs.cpcn.com> wrote: > On Thursday, August 9, 2018 at 5:36:25 PM UTC-4, Peter Flass wrote: > >> Charles Richmond <nume...@aquaporin4.com> wrote: >> >>> *Not* that I disagree... but which other computers do you find elegant??? >> System/360. > > +1 +0.9 - I had to knock off a tenth because they went and used BXH and BXLE instead of BXHE and BXL, which IMHO would have made a lot more sense. The other machine that stands out in my mind is the PDP-11. I once hand-disassembled the Dungeon machine code and was stunned by its elegance. Making R7 the program counter and R6 the stack pointer, plus predecrement and postincrement, made it possible to do all sorts of nifty program control stuff with what at first looked like ordinary data manipulation instructions. The Dungeon binary was threaded code implemented in hardware. -- /~\ cgibbs@kltpzyxm.invalid (Charlie Gibbs) \ / I'm really at ac.dekanfrus if you read it the right way. X Top-posted messages will probably be ignored. See RFC1855. / \ Fight low-contrast text in web pages! http://contrastrebellion.com
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X-Received: by 2002:a1c:705:: with SMTP id 5-v6mr1507515wmh.4.1534210738950; Mon, 13 Aug 2018 18:38:58 -0700 (PDT) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 2002:a1c:6a11:: with SMTP id f17-v6ls2545792wmc.11.gmail; Mon, 13 Aug 2018 18:38:58 -0700 (PDT) X-Received: by 2002:a1c:ed0f:: with SMTP id l15-v6mr1415034wmh.24.1534210738419; Mon, 13 Aug 2018 18:38:58 -0700 (PDT) MIME-Version: 1.0 Path: mbox-mo1.pugleaf.net!p4-v6ni300wmb.0!nntp.google.com!goblin2!goblin1!goblin.stu.neva.ru!npeer.de.kpn-eurorings.net!npeer-ng0.de.kpn-eurorings.net!peer02.ams1!peer.ams1.xlned.com!news.xlned.com!peer02.am4!peer.am4.highwinds-media.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!spln!extra.newsguy.com!newsp.newsguy.com!news1 From: Charlie Gibbs <cgibbs@kltpzyxm.invalid> Newsgroups: alt.folklore.computers Subject: Re: PDP 11/40 system manual Date: 14 Aug 2018 01:38:30 GMT Organization: NewsGuy.com Lines: 27 Message-ID: <pktbqm02dr4@news1.newsguy.com> References: <21aaeee8-c41a-4442-a4eb-ea6a29b1e4f1@googlegroups.com> <0001HW.211B94B1040CADA5700004B5B2CF@news.giganews.com> <mdd7ekzl6pr.fsf@panix5.panix.com> <pki8ae$ca0$1@dont-email.me> <1028478389.555543171.735142.peter_flass-yahoo.com@news.eternal-september.org> <3777ab2c-1407-4803-a5f0-a8bcc34bad9d@googlegroups.com> NNTP-Posting-Host: p427d6e98762d86813c1a798bba0d3be8d639d4fb003a7619.newsdawg.com User-Agent: slrn/1.0.3 (Linux) X-Received-Bytes: 2021 X-Received-Body-CRC: 3437565287 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit