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 autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 14207 invoked from network); 10 Feb 2023 18:33:59 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 10 Feb 2023 18:33:59 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id A9C8241C34; Sat, 11 Feb 2023 04:33:57 +1000 (AEST) Received: from junk.nocrew.org (junk.nocrew.org [51.15.56.219]) by minnie.tuhs.org (Postfix) with ESMTPS id 4C11741C33 for ; Sat, 11 Feb 2023 04:33:54 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=junk.nocrew.org) by junk.nocrew.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1pQYDY-0000EN-Ql; Fri, 10 Feb 2023 18:33:52 +0000 From: Lars Brinkhoff To: Dan Cross Organization: nocrew References: <3e272d72-b77a-d347-b5c3-7ed19482e5af@gmail.com> <3h5FEAegoTs6FrhHODiW-rBdB59dt_Rmr4G0PIw7flqaJLsmorgPsilm4f2aJkDud-qEljDjnCJcE1uY05Iw4HNQcyNG4W3wzVlLD0UZfLg=@protonmail.com> <7wttzu3uvh.fsf@junk.nocrew.org> <7wlel54ynd.fsf@junk.nocrew.org> Date: Fri, 10 Feb 2023 18:33:52 +0000 In-Reply-To: (Dan Cross's message of "Fri, 10 Feb 2023 12:19:25 -0500") Message-ID: <7w8rh54bfz.fsf@junk.nocrew.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-SA-Exim-Connect-IP: 127.0.0.1 X-SA-Exim-Mail-From: lars@nocrew.org X-SA-Exim-Scanned: No (on junk.nocrew.org); SAEximRunCond expanded to false Message-ID-Hash: VUQ3AOEIPZGN3E5MR4AZ3MAKVBG7MR2H X-Message-ID-Hash: VUQ3AOEIPZGN3E5MR4AZ3MAKVBG7MR2H X-MailFrom: lars@nocrew.org 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: Jonathan Gray , Computer Old Farts Followers X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [COFF] Re: [TUHS] Re: project athena (was Re: Setting up an X Development Environment for Mac OS) List-Id: Computer Old Farts Forum Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Dan Cross wrote: > Oh yeah, I imagine [SUPDUP] was implemented on Lisp machines, probably > for connecting to ITS. Lars, do you know? I don't know if it was first implemented on ITS or Lisp machines, but one of those two. SUPDUP is basically just ITS' internal terminal buffer codes for text and cursor movement, adopted as a network protocol. So certainly the first SUPDUP server would have been written for ITS. Stanford's AI lab also adopted the protocol. But outside those two sites, almost no one. The name comes from "super-duper image mode", shortened to fit ITS' file name limit of six characters. On ITS, a terminal may be opened in "ASCII mode" which means control chacters are interpreted. In "image mode" most control characters are passed through verbatim. There's a special "super-image mode" where *all* characters are passed through. So "super-duper image mode", then, alludes to the fact that even the normally invisible internal codes are passed through.