Path: ...!weretis.net!feeder8.news.weretis.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Lynn Wheeler Newsgroups: comp.arch Subject: Re: time-sharing history, Privilege Levels Below User Date: Wed, 12 Jun 2024 16:13:03 -1000 Organization: Wheeler&Wheeler Lines: 33 Message-ID: <87msnp1tg0.fsf@localhost> References: <87y17925e8.fsf@localhost> <87tthx1vxp.fsf@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Date: Thu, 13 Jun 2024 04:13:06 +0200 (CEST) Injection-Info: dont-email.me; posting-host="44822fe9b3333450d8ff8c92dd7086c9"; logging-data="2162753"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+XdGGSQOy9FXUaPgtiOAcTXfU2FciyvPM=" User-Agent: Gnus/5.13 (Gnus v5.13) Cancel-Lock: sha1:FGkRojUMZk5G/17ZPtPw9HrXpJI= sha1:9EoqBoFhHwLnA/FkmWsnhBY5VvA= Bytes: 2951 Lawrence D'Oliveiro writes: > So what did you think of it? The original hardware architecture was > heavily centred around the 60.15Hz video refresh. Each refresh interval, > 21888 bytes were read out of the video buffer (for the 512×342 display), > and 740 bytes were read out of the sound buffer to go to the speaker. biggest issue was what I characterized as kitchen table "only" with no business uses ... desktop publishing was somewhat inbetween (visicalc wasn't supposedly part of it)... at a time when large corporations ordering tens of thousands of IBM/PC with 3270 terminal emulation .... single desktop footprint doing both mainframe terminal and increasing kinds of local processing. later IBM co-worker left and did some work for Apple using Cray with 100mbyte/sec high-end graphics ... could be used to simulate various processor and graphic performance ... part of the joke that Cray used apple to design Cray machines and Apple used Cray machine to design Apple machines. some history https://arstechnica.com/features/2005/12/total-share/ https://arstechnica.com/features/2005/12/total-share.ars/2 https://arstechnica.com/features/2005/12/total-share.ars/3 https://arstechnica.com/features/2005/12/total-share.ars/4 https://arstechnica.com/features/2005/12/total-share.ars/5 https://arstechnica.com/features/2005/12/total-share.ars/6 https://arstechnica.com/features/2005/12/total-share.ars/7 https://arstechnica.com/features/2005/12/total-share.ars/8 https://arstechnica.com/features/2005/12/total-share.ars/9 https://arstechnica.com/features/2005/12/total-share.ars/10 -- virtualization experience starting Jan1968, online at home since Mar1970