From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 21409 invoked from network); 18 May 2020 15:13:57 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 18 May 2020 15:13:57 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 74D0B9C179; Tue, 19 May 2020 01:13:55 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id E31BE9C160; Tue, 19 May 2020 01:13:36 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 54AC89C160; Tue, 19 May 2020 01:13:34 +1000 (AEST) Received: from cfcl.com (cpepool4cmts2-144.sanbrunocable.com [24.143.248.144]) by minnie.tuhs.org (Postfix) with ESMTP id 0F8389C15F for ; Tue, 19 May 2020 01:13:34 +1000 (AEST) Received: from spot.local (spot.local [IPv6:fe80::85b:cbb9:d06e:2fce]) by cfcl.com (Postfix) with ESMTP id 5EBABE746AD for ; Mon, 18 May 2020 08:13:33 -0700 (PDT) From: Rich Morin Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 13.0 \(3608.40.2.2.4\)) Date: Mon, 18 May 2020 08:13:32 -0700 References: <20200515213138.8E0F72D2D71E@macaroni.inf.ed.ac.uk> <077a01d62b08$e696bee0$b3c43ca0$@ronnatalie.com> <20200515233427.31Vab%steffen@sdaoden.eu> <5DB09C5A-F5DA-4375-AAA5-0711FC6FB1D9@ronnatalie.com> <20200516232607.nLiIx%steffen@sdaoden.eu> To: The Eunuchs Hysterical Society In-Reply-To: Message-Id: <198EF603-9E5F-4603-8B6E-C2019423715E@cfcl.com> X-Mailer: Apple Mail (2.3608.40.2.2.4) Subject: Re: [TUHS] v7 K&R C X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" > On May 17, 2020, at 09:24, Paul Winalski = wrote: >=20 > ... The PDP-10 addressed memory in 36-bit units. The character = manipulating > instructions could deal with a variety of different byte lengths: you = could > store ... five ASCII 7-bit characters (with a bit left over) ... IIRC, this format was called 5/7 IOPS ASCII. The PDP-7, 9, and 15 = computers used a variant of this format, but they had to start with a pair of (18-bit) = words. Around 1970, I wrote a pair of (assembly language) routines to extract = and insert characters, because our PDP-15 did NOT have character manipulating = instructions. -r