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Article #625484Re: different architecture, was PDP 11/40 system manual
From: John Levine
Date: Wed, 15 Aug 2018 21:59
Date: Wed, 15 Aug 2018 21:59
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2321 bytes
In article <pl1s0k$on8$1...@dont-email.me>, Dan Espen <dan1...@gmail.com> wrote: >> I've read the manuals too. The card version of BOS was called BPS, >> and none of BOS, DOS, or TOS, could do multiprogramming until much >> later versions of DOS. ... >I implemented a multiprogrammed online system on a very early >version of DOS, long before DOS/VS. I think ATTACH and friends >were pretty much there from the beginning. Oh, sure. DOS always had asynchronous I/O if you wanted to roll your own multithreaded application. But it took them several years to add the foreground/background stuff that let you run three programs at once. -- 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:a1c:342:: with SMTP id 63-v6mr2324216wmd.1.1534370397673; Wed, 15 Aug 2018 14:59:57 -0700 (PDT) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 2002:a1c:6a17:: with SMTP id f23-v6ls695341wmc.2.canary-gmail; Wed, 15 Aug 2018 14:59:56 -0700 (PDT) X-Received: by 2002:a1c:7308:: with SMTP id d8-v6mr2305096wmb.20.1534370396752; Wed, 15 Aug 2018 14:59:56 -0700 (PDT) MIME-Version: 1.0 Path: mbox-mo1.pugleaf.net!a22-v6ni6998wmg.0!nntp.google.com!feeder1.cambriumusenet.nl!feed.tweak.nl!144.76.165.73.MISMATCH!news.unit0.net!news.mixmin.net!aioe.org!adore2!news.iecc.com!.POSTED.news.iecc.com!not-for-mail From: John Levine <jo...@taugh.com> Newsgroups: alt.folklore.computers Subject: Re: different architecture, was PDP 11/40 system manual Date: Wed, 15 Aug 2018 21:59:56 -0000 (UTC) Organization: Taughannock Networks Message-ID: <pl27os$1shb$1@gal.iecc.com> References: <21aaeee8-c41a-4442-a4eb-ea6a29b1e4f1@googlegroups.com> <504928995.556023147.952672.peter_flass-yahoo.com@news.eternal-september.org> <pl1pjt$n66$1@gal.iecc.com> <pl1s0k$on8$1@dont-email.me> Injection-Date: Wed, 15 Aug 2018 21:59:56 -0000 (UTC) Injection-Info: gal.iecc.com; posting-host="news.iecc.com:2001:470:1f07:1126:0:676f:7373:6970"; logging-data="61995"; mail-complaints-to="ab...@iecc.com" Cleverness: some X-Newsreader: trn 4.0-test77 (Sep 1, 2010) Originator: jo...@iecc.com (John Levine) Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit