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Article #625601Re: 360/20, was PDP 11/40 system manual
From: John Levine
Date: Fri, 17 Aug 2018 18:36
Date: Fri, 17 Aug 2018 18:36
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2352 bytes
In article <f4077026-2b80-47e0...@googlegroups.com>, Quadibloc <jsa...@ecn.ab.ca> wrote: >> Maybe making a cheap 1401 wouldn't have been a bad idea. > >And don't forget that the 360/20 wasn't compatible either. The instruction set was different (mostly upward compatible with a real 360 which as far as I can tell, never mattered) but most of the peripherals were the same. The 2560 MFCM card read/punch/interpret/sort/crumple device and the internal modems were unique to the /20 but the 1403 printer, 2415 tape, and everything else were regular 360 devices. The 2311 disk was the same physical drive and pack, but the disks used fixed sectors so you couldn't read or write them on anything but another /20. -- Regards, John Levine, jo...@iecc.com, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. https://jl.ly
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X-Received: by 2002:a24:50c1:: with SMTP id m184-v6mr14393492itb.25.1534530975647; Fri, 17 Aug 2018 11:36:15 -0700 (PDT) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 2002:a6b:ce14:: with SMTP id p20-v6ls1385739iob.23.gmail; Fri, 17 Aug 2018 11:36:14 -0700 (PDT) X-Received: by 2002:a5e:8e01:: with SMTP id a1-v6mr2093168ion.134.1534530974707; Fri, 17 Aug 2018 11:36:14 -0700 (PDT) MIME-Version: 1.0 Path: mbox-mo1.pugleaf.net!g5-v6ni1100iti.0!nntp.google.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!news.iecc.com!.POSTED.news.iecc.com!not-for-mail From: John Levine <jo...@taugh.com> Newsgroups: alt.folklore.computers Subject: Re: 360/20, was PDP 11/40 system manual Date: Fri, 17 Aug 2018 18:36:14 -0000 (UTC) Organization: Taughannock Networks Message-ID: <pl74iu$2cq2$1@gal.iecc.com> References: <21aaeee8-c41a-4442-a4eb-ea6a29b1e4f1@googlegroups.com> <pkmrkc$6lm$1@dont-email.me> <44cb1c4c-62c4-4ddb-8261-762e02825158@googlegroups.com> <f4077026-2b80-47e0-8279-3abab7f5cef0@googlegroups.com> Injection-Date: Fri, 17 Aug 2018 18:36:14 -0000 (UTC) Injection-Info: gal.iecc.com; posting-host="news.iecc.com:2001:470:1f07:1126:0:676f:7373:6970"; logging-data="78658"; mail-complaints-to="ab...@iecc.com" Cleverness: some X-Newsreader: trn 4.0-test77 (Sep 1, 2010) Originator: jo...@iecc.com (John Levine) Bytes: 1848 Lines: 21 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit