Path: csiph.com!1.us.feeder.erje.net!3.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!reader01.eternal-september.org!.POSTED!not-for-mail From: Anne & Lynn Wheeler Newsgroups: alt.folklore.computers Subject: Re: Fred P. Brooks, 1931-2022 Date: Thu, 01 Dec 2022 14:44:40 -1000 Organization: Wheeler&Wheeler Lines: 68 Message-ID: <87v8mutz0n.fsf@localhost> References: <11372744-628f-4a7a-be20-2dfb2b71900bn@googlegroups.com> <87pmd5vzan.fsf@localhost> <1261767305.691541364.133032.peter_flass-yahoo.com@news.eternal-september.org> <87y1rr979s.fsf@localhost> MIME-Version: 1.0 Content-Type: text/plain Injection-Info: reader01.eternal-september.org; posting-host="9f139bbaa264b34b4b581b323c26dad4"; logging-data="3059630"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/TAAnTdoL21jsMchI4LEEPMKAY3ah+qsI=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) Cancel-Lock: sha1:jfFbU6Fu+ivVb5+pypHeVpTm830= sha1:sl79Q58ncAL0Bwk5u/HsVevb67A= Xref: csiph.com alt.folklore.computers:222904 Quadibloc writes: > Which full architecture document no doubt was highly secret within IBM. > > However, nowadays, stuff like Program Logic Manuals, which were IBM > Confidential, are turning up on Bitsavers. PLMs were less so, it was the unannounced features ... like before 370 virtual memory ... somebody leaked some details to industry press which resulted in witch hunt ... and then all internal IBM copiers were retrofitted with serial under the glass that would appear on every page copied ... to try and help localize where leak might have originated. Cambridge did have a joint project with Endicott to modify CP67 to provide 370 (virtual memory architecture) virtual machines. This was in regular operation a year before any engineering 370 hardware supporting virtual memory was operational. Cambridge had to demonsrate fairly strong security since staff, professors, and students from Boston area univ. were also using the Cambridge CP67 system. Then for FS http://www.jfsowa.com/computer/memo125.htm http://people.cs.clemson.edu/~mark/fs.html https://www.ecole.org/en/session/49-the-rise-and-fall-of-ibm https://en.wikipedia.org/wiki/IBM_Future_Systems_project IBM tried to eliminate all classified hard copy documents, specially modified VM370 system where documents could only be read on specifically identified 3270 terminals and all functions but reading was disabled. When FS imploded, there was mad rush to get stuff back into 370 product pipelines ... including kicking off 370/xa and quick and dirty 3033 and 3081 in parallel. Initially 370/xa hard copy were "IBM registered confidential" (referred to as "811" for nov78 publication date) ... each page had off-color, page size, document serial number embossed ... serial number was registered to specific person and there were periodic surprise security audits to make sure they were kept under double lock&key. IBM security classification had evovled to: IBM Internal Use Only IBM Confidential IBM Confidential - Restricted IBM Confidential - Registered something of a joke: 1974, CERN had done an analysis comparing VM370/CMS and MVS/TSO and presented result at (IBM mainframe user group) SHARE ... and copies were freely available ... except inside IBM where they got stamped "IBM Confidential - Restricted" (available on need to know basis only) ... wanted as much as possible to minimize availability of the analysis to IBM employees. I ran into something similar when TYMSHARE https://en.wikipedia.org/wiki/Tymshare in Aug1976 started offering their CMS-based online computer conferencing facility free to SHARE as VMSHARE ... archives here: http://vm.marist.edu/~vmshare I cut a deal with TYMSHARE to get monthly tape dump of all VMSHARE files for putting up on internal network and internal systems. The biggest problem I had were the lawyers concerned that IBM employees would be contaminated exposed to customer information (and/or internal employees were being fed stuff about customers that didn't correspond to what customers were actually saying). -- virtualization experience starting Jan1968, online at home since Mar1970