Path: ...!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Lynn Wheeler Newsgroups: comp.arch Subject: Re: Chipsandcheese article on the CDC6600 Date: Mon, 22 Jul 2024 17:01:10 -1000 Organization: Wheeler&Wheeler Lines: 24 Message-ID: <874j8gu809.fsf@localhost> References: <2k3q9j1lqngjsfmts49q6l3825nipf91rq@4ax.com> MIME-Version: 1.0 Content-Type: text/plain Injection-Date: Tue, 23 Jul 2024 05:01:12 +0200 (CEST) Injection-Info: dont-email.me; posting-host="15d33ecc75b18d6a03e1d44a7fc91577"; logging-data="1099476"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+kCFdSDU4DP7dUUe0mUjHgv+RLBQH8o8A=" User-Agent: Gnus/5.13 (Gnus v5.13) Cancel-Lock: sha1:kbUxqEtCtdXvsLlGSZQOC9vbtag= sha1:X98dXi8Zbuz4XBfKPNJTwIl9ras= Bytes: 2302 mitchalsup@aol.com (MitchAlsup1) writes: > The largest a team should be is 11 + leader--Jesus tried for 12 and > failed. trivia: science center wanted to get a 360/50 to modify for virtual memory, but all the extra 360/50s were going to FAA ATC ... and so they had to settle for 360/40 ... they implemented virtual memory with associative array that held process-ID and virtual page number for each real page (compared to Atlas associative array, which just had virtual page number for each real page... effectively just single large virtual address space). the official IBM operating system for (standard virtual memory) 360/67 was TSS/360 which peaked around 1200 people at a time when the science center had 12 people (that included secretary) morphing CP/40 into CP/67. Melinda's history website http://www.leeandmelindavarian.com/Melinda#VMHist description of CP/40 (for modified 360/40) http://www.leeandmelindavarian.com/Melinda/JimMarch/CP40_The_Origin_of_VM370.pdf -- virtualization experience starting Jan1968, online at home since Mar1970