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=0.3 required=5.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,LOTS_OF_MONEY, MAILING_LIST_MULTI,MONEY_NOHTML,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.4 Received: (qmail 27323 invoked from network); 19 Dec 2023 17:40:30 -0000 Received: from minnie.tuhs.org (2600:3c01:e000:146::1) by inbox.vuxu.org with ESMTPUTF8; 19 Dec 2023 17:40:30 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 6E9BD43ED0; Wed, 20 Dec 2023 03:40:24 +1000 (AEST) Received: from mail-pg1-x535.google.com (mail-pg1-x535.google.com [IPv6:2607:f8b0:4864:20::535]) by minnie.tuhs.org (Postfix) with ESMTPS id 69BAC43DD2 for ; Wed, 20 Dec 2023 03:40:16 +1000 (AEST) Received: by mail-pg1-x535.google.com with SMTP id 41be03b00d2f7-5cd51c0e8ebso1933153a12.3 for ; Tue, 19 Dec 2023 09:40:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1703007615; x=1703612415; darn=tuhs.org; h=cc:to:subject:message-id:date:from:references:in-reply-to :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=yhV+EPiqi3Fo69sGVidtUUQ750OWuMj5d7b+fosLTJ0=; b=Jk8PBaPxOCFD6LAEOCXtcek5wJn9jVA2qj2Zy+kjohSa9EcjMuGRsQCJ3yed29WhZG D2nJ3P+hmS96doUlL8UQJp9esy+JtBi5QsIjqewMr+GGYYyLidGOtgz2148EES64332d JGuunaZacH//q+eGS3zGHRorI6/3KCdGXS80I3DoDvQq5SO2JDF+c8d6AyOB7rEfDbXb aFiaZEdEHHaHuBh0C6HyI+4unNAUGvQz8TGqGUSQV4zgKQT/Vo8hMzc/eQjPnRUoHmBe 1QLuROTe8OKnSgjwmy28S6mtzdKBF8vF/1sk38nugJfprfBfGUnJjBf3Nv/lXSyjYdfN xePg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703007615; x=1703612415; h=cc:to:subject:message-id:date:from:references:in-reply-to :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=yhV+EPiqi3Fo69sGVidtUUQ750OWuMj5d7b+fosLTJ0=; b=ubIDUNmnAOXIuRfmWgE9nChkwSiG5uZ6p8y53tJELkvTMYne0RAPh04escdY2eD03v n60ktgvhnwDZ+upcrvmvckT1JJNGkosfd/lCZkIaydpJ9N8i/hxA7ixK+u0hnPqoI43W svwBdGc+S7MmMs5u7WjQulYXLdclk4JHPFIv3+3aITPCkKjkT0s8xhZxFx+CjBSEMrr9 Dkgsv+syqPtIglhwSERtQX59qKyPFqoc5y+P/6ptkJxmf+mFO7NBWpVRU4aHJ9qf0TrC K1RgnLsRRLoPka34rMC1+xUc3ER21nDCMkgXGqXgq7lA83nstFoJtnF4dbHHQ60mbLOg TSfw== X-Gm-Message-State: AOJu0YyIDw0APDT194Ga52PIa4QJpMd7x9aT0Z31DawC3o5ZTRFttsck Yt9WTrcLAyi33mXlZLk3Wbb2ft5/x2/axfaG19N7c5UA X-Google-Smtp-Source: AGHT+IFhxXeBKCwkgGU80edUmO+OCjH5LKBbEytAPfTOHgBcDoFNu7nputYNdxrFl8sX4sbs+2ofxoA5Do9GqH4+m5s= X-Received: by 2002:a17:90a:8c0a:b0:28b:83de:c6c7 with SMTP id a10-20020a17090a8c0a00b0028b83dec6c7mr1856513pjo.87.1703007615525; Tue, 19 Dec 2023 09:40:15 -0800 (PST) MIME-Version: 1.0 Received: by 2002:a05:6a10:844e:b0:52a:96f1:6718 with HTTP; Tue, 19 Dec 2023 09:40:14 -0800 (PST) In-Reply-To: References: <93ef58b9-b058-4463-b0e6-d2f2f2bf5a55@loomcom.com> <76f6ae7e-20e1-41fa-9fe4-cc22015411bf@mhorton.net> From: Paul Winalski Date: Tue, 19 Dec 2023 12:40:14 -0500 Message-ID: To: Dave Horsfall Content-Type: text/plain; charset="UTF-8" Message-ID-Hash: 6SAM2OSXX64PBL2ABP7PUDYZI43ZVNNM X-Message-ID-Hash: 6SAM2OSXX64PBL2ABP7PUDYZI43ZVNNM X-MailFrom: paul.winalski@gmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: The Eunuchs Hysterical Society X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Compatibility question List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On 12/18/23, Dave Horsfall wrote: > On Mon, 18 Dec 2023, Paul Winalski wrote: > >> The 132-character screen width was for displaying files originally >> formatted to be printed on a line printer. Compiler listings and linker >> maps, for example. > > Such as the mighty 1403 :-) > > Hint: never leave your cup of coffee on top of it, as the lid will open > automatically when it runs out of paper... The 1403 was the best line printer ever made. It was originally the printer for the IBM 1400 second-generation (discrete transistor-based) computer. It continued to be the line printer for S/360. The deluxe model, the IBM 1403 N1, had a power cover that could be operated under computer control. The OS/360 operating system would raise the printer's cover if an error condition occurred, such as out of paper or a paper jam. This was a very useful feature in large data centers where there were several line printers, to indicate which printer had a problem. The cover of a 1403 N1 also provided a convenient and attractive flat surface on which to place things. But a dangerous one. Many a card deck magtape reel, coffee cup, or pizza box has been unceremoniously dumped on the floor. When our shop upgraded from a S/360 model 25 to a S/370 model 125, our 1403 was replaced by a 3203 line printer. It was not as good as the 1401 had been. There was a business in Massachusetts in the 1980s that bought and sold old IBM computer gear. A company asked them for a quote on their IBM 1400 system (1401 processor, 1402 card read/punch, 1403 printer). They were offered $18,000 for the whole system, or $15,000 for the 1403 printer alone. That's how valued those printers were. To bring this closer on-topic, was there Unix support for the IBM 1403? -Paul W.