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 26987 invoked from network); 18 May 2020 15:52:17 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 18 May 2020 15:52:17 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 56A159C1E7; Tue, 19 May 2020 01:52:14 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id B08C69C160; Tue, 19 May 2020 01:51:57 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 6EF979C160; Tue, 19 May 2020 01:51:54 +1000 (AEST) Received: from server907.appriver.com (server907.appriver.com [204.232.250.38]) by minnie.tuhs.org (Postfix) with ESMTPS id 010939C15F for ; Tue, 19 May 2020 01:51:53 +1000 (AEST) X-Note: This Email was scanned by AppRiver SecureTide X-Note-AR-ScanTimeLocal: 05/18/2020 11:51:52 AM X-Note: SecureTide Build: 4/23/2020 1:47:34 PM UTC (2.10.0.0) X-Note: Filtered by 10.246.1.76 X-Note-AR-Scan: None - PIPE Received: by server907.appriver.com (CommuniGate Pro PIPE 6.2.12) with PIPE id 39216497; Mon, 18 May 2020 11:51:52 -0400 Received: from [10.246.0.39] (HELO smtp.us.exg7.exghost.com) by server907.appriver.com (CommuniGate Pro SMTP 6.2.12) with ESMTPS id 39216415; Mon, 18 May 2020 11:51:43 -0400 Received: from E16DN31A-S1E7.exg7.exghost.local (192.168.244.15) by E16DN31A-S1E7.exg7.exghost.local (192.168.244.15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.0; Mon, 18 May 2020 11:51:42 -0400 Received: from E16DN31A-S1E7.exg7.exghost.local ([192.168.244.15]) by E16DN31A-S1E7.exg7.exghost.local ([192.168.244.15]) with mapi id 15.01.1979.000; Mon, 18 May 2020 11:51:42 -0400 From: Brantley Coile To: Rich Morin Thread-Topic: [TUHS] v7 K&R C Thread-Index: AQHWKwA3Mfrm4ntfZkGQSIWWhns9L6ip844AgAALS4CAABDzgIABd9+AgAAYIoCAARx0gIABfpUAgAAKqYA= Date: Mon, 18 May 2020 15:51:42 +0000 Message-ID: <5C93338C-5CA1-48D5-8F99-39AE17C45EFF@coraid.com> 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> <198EF603-9E5F-4603-8B6E-C2019423715E@cfcl.com> In-Reply-To: <198EF603-9E5F-4603-8B6E-C2019423715E@cfcl.com> Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [47.46.143.102] x-rerouted-by-exchange: MIME-Version: 1.0 Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable X-Note: This Email was scanned by AppRiver SecureTide X-Note-AR-ScanTimeLocal: 05/18/2020 11:51:43 AM X-Note: SecureTide Build: 4/23/2020 1:47:34 PM UTC (2.10.0.0) X-Note: Filtered by 10.246.1.76 X-Policy: GLOBAL X-Primary: GLOBAL@coraid.com X-Note-Sender: X-Virus-Scan: V- X-Note-SnifferID: 0 X-GBUdb-Analysis: 0, 10.246.0.39, Ugly c=1 p=-0.982426 Source White X-Signature-Violations: 0-0-0-3812-c X-Note-419: 15.6235 ms. Fail:0 Chk:1361 of 1361 total X-Note: VSCH-CT/SI: 0-1361/SG:1 5/18/2020 11:50:54 AM X-Note: Spam Tests Failed: X-Country-Path: PRIVATE->PRIVATE-> X-Note-Sending-IP: 10.246.0.39 X-Note-Reverse-DNS: X-Note-Return-Path: brantley@coraid.com X-Note: User Rule Hits: X-Note: Global Rule Hits: G703 G704 G705 G706 G724 G725 G726 G881 X-Note: Encrypt Rule Hits: X-Note: Mail Class: VALID 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: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" CDC NOS on the 6600 (I used a 70/74, actually) used 12 bits to store ASCII.= Mostly, we used six bit display code. Since there was a printable characte= r for every code, you could just look at the binary files. Ten characters t= o the word! Brantley > On May 18, 2020, at 11:13 AM, Rich Morin wrote: >=20 >> On May 17, 2020, at 09:24, Paul Winalski wrote= : >>=20 >> ... The PDP-10 addressed memory in 36-bit units. The character manipul= ating >> instructions could deal with a variety of different byte lengths: you c= ould >> store ... five ASCII 7-bit characters (with a bit left over) ... >=20 > IIRC, this format was called 5/7 IOPS ASCII. The PDP-7, 9, and 15 comput= ers used > a variant of this format, but they had to start with a pair of (18-bit) w= ords. > Around 1970, I wrote a pair of (assembly language) routines to extract an= d insert > characters, because our PDP-15 did NOT have character manipulating instru= ctions. >=20 > -r >=20