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 64d5095d for ; Mon, 21 Oct 2019 05:14:56 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 889829B926; Mon, 21 Oct 2019 15:14:55 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 045E993D8D; Mon, 21 Oct 2019 15:14:41 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id E4EBD93D8D; Mon, 21 Oct 2019 15:14:13 +1000 (AEST) Received: from viclamta35p.bpe.bigpond.com (viclamta35p.bpe.bigpond.com [203.38.21.99]) by minnie.tuhs.org (Postfix) with ESMTPS id E9D9793D8C for ; Mon, 21 Oct 2019 15:14:12 +1000 (AEST) Received: from smtp.telstra.com ([10.10.26.4]) by viclafep35p-svc.bpe.nexus.telstra.com.au with ESMTP id <20191021051410.TNGV3889.viclafep35p-svc.bpe.nexus.telstra.com.au@smtp.telstra.com> for ; Mon, 21 Oct 2019 16:14:10 +1100 X-RG-Spam: Unknown X-RazorGate-Vade: gggruggvucftvghtrhhoucdtuddrgedufedrkeeggdeludcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfupfevtfgpvffgnffuvffttedpqfgfvfenuceurghilhhouhhtmecugedttdenucenucfjughrpeffhffvufgjkfhffgggtgesthdttddttdervdenucfhrhhomhepffgrvhgvucfjohhrshhfrghllhcuoegurghvvgeshhhorhhsfhgrlhhlrdhorhhgqeenucfkphepuddutddrudeguddrudelfedrvdeffeenucfrrghrrghmpehhvghloheprghnvghurhhinhdrhhhorhhsfhgrlhhlrdhorhhgpdhinhgvthepuddutddrudeguddrudelfedrvdeffedpmhgrihhlfhhrohhmpeeouggrvhgvsehhohhrshhfrghllhdrohhrgheqpdhrtghpthhtohepoehtuhhhshesthhuhhhsrdhorhhgqeenucevlhhushhtvghrufhiiigvpedt X-RazorGate-Vade-Verdict: clean 0 X-RazorGate-Vade-Classification: clean X-RG-VS-CLASS: clean Received: from aneurin.horsfall.org (110.141.193.233) by smtp.telstra.com (5.8.418) id 5DACC2BA0014C609 for tuhs@tuhs.org; Mon, 21 Oct 2019 16:14:10 +1100 Received: from aneurin.horsfall.org (localhost [127.0.0.1]) by aneurin.horsfall.org (8.15.2/8.15.2) with ESMTP id x9L5E9Wt041580 for ; Mon, 21 Oct 2019 16:14:09 +1100 (EST) (envelope-from dave@horsfall.org) Received: from localhost (dave@localhost) by aneurin.horsfall.org (8.15.2/8.15.2/Submit) with ESMTP id x9L5E95q041577 for ; Mon, 21 Oct 2019 16:14:09 +1100 (EST) (envelope-from dave@horsfall.org) X-Authentication-Warning: aneurin.horsfall.org: dave owned process doing -bs Date: Mon, 21 Oct 2019 16:14:09 +1100 (EST) From: Dave Horsfall To: The Eunuchs Hysterical Society In-Reply-To: <443935c0-b033-e3ae-ea63-6a0fb3f8eb9e@kilonet.net> Message-ID: References: <201910191440.x9JEe8PB035921@tahoe.cs.Dartmouth.EDU> <443935c0-b033-e3ae-ea63-6a0fb3f8eb9e@kilonet.net> User-Agent: Alpine 2.21.9999 (BSF 287 2018-06-16) X-GPG-Public-Key: http://www.horsfall.org/gpgkey.pub X-GPG-Fingerprint: 05B4 FFBC 0218 B438 66E0 587B EF46 7357 EF5E F58B X-Home-Page: http://www.horsfall.org/ X-Witty-Saying: "chmod 666 the_mode_of_the_beast" MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Subject: Re: [TUHS] How to do differential/integral on a PDP-7, was: Space Travel 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 Sat, 19 Oct 2019, Arthur Krewat wrote: > Not to mention, if you start using log/alog tables, and/or sin/cos/tan > tables, and interpolation, you can quickly ramp up computation speed for > simple games that have a small matrix of coordinates. Something like > EMPIRE becomes quite easy. Star Wars on a GT-40, which Andrew Hume (formerly UNSW, who is now at Bell last I heard) reverse-engineered to support three players, not two. Oddly enough, DEC Field Circus stopped replacing GT-40 switch consoles after that (certain keys were worn out)... > Imagine my distress when, after cutting my teeth on a PDP-10, that > working on a 6502 I had to do my own division. Oh, the HORROR! And you tell that to the young people of day, and they won't believe you... Now, where did I put my Z-80 full ANSI C Compiler... -- Dave