From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id b42f70a4 for ; Thu, 10 Oct 2019 14:21:58 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 699E894891; Fri, 11 Oct 2019 00:21:57 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 3020C93D28; Fri, 11 Oct 2019 00:21:38 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 9BABB93D28; Fri, 11 Oct 2019 00:21:36 +1000 (AEST) Received: from nb3.reedmedia.net (nb3.reedmedia.net [71.19.148.35]) by minnie.tuhs.org (Postfix) with ESMTPS id 62EF493D09 for ; Fri, 11 Oct 2019 00:21:36 +1000 (AEST) Received: from [47.185.49.132] (helo=reedmedia.net) by nb3.reedmedia.net with esmtpa (Exim 4.89) (envelope-from ) id 1iIZJw-0006vC-Er; Thu, 10 Oct 2019 14:21:36 +0000 Received: from reed@reedmedia.net by reedmedia.net with local (mailout 0.17) id 19636-1570717292; Thu, 10 Oct 2019 09:21:33 -0500 Date: Thu, 10 Oct 2019 09:21:32 -0500 (CDT) From: reed@reedmedia.net X-X-Sender: reed@t1.m.reedmedia.net To: Lars Brinkhoff In-Reply-To: <7w36g12mas.fsf@junk.nocrew.org> Message-ID: References: <7w36g12mas.fsf@junk.nocrew.org> User-Agent: Alpine 2.21 (NEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Subject: Re: [TUHS] History talk in Dallas Texas October 10 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" On Thu, 10 Oct 2019, Lars Brinkhoff wrote: > Warner Losh wrote: > > I'm unsure the thing you labeled as DISPLAY-2 is the DISPLAY-2 or the > > standard Option 340 display. I know people on this list said it was a > > display-2 (maybe my early slides did as well). Based on pictures in > > the PDP-7 manuals, I think it was the 340... > > The photo does look much like a 340 CRT. Is there anything known about > how the GRAPHICS-2 (not DISPLAY-2, right?) hardware was built? Is it > possible a 340 CRT was repurposed for GRAPHICS-2? https://www.tuhs.org/Archive/Distributions/Research/McIlroy_v0/03-scope.pdf Jump down to page 20 and more. Also see some of the PDP-7 assembler code in same directory about "G-2" and "graphic-2" (keyboard and display) etc.