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Path: sserve!newshost.anu.edu.au!munnari.oz.au!bruce.cs.monash.edu.au!harbinger.cc.monash.edu.au!msuinfo!uwm.edu!math.ohio-state.edu!howland.reston.ans.net!pipex!uknet!EU.net!sun4nl!fwi.uva.nl!casper From: casper@fwi.uva.nl (Casper H.S. Dik) Newsgroups: comp.unix.bsd Subject: Re: How was BSD written? Date: 11 Feb 1994 10:39:29 GMT Organization: FWI, University of Amsterdam Lines: 24 Distribution: world Message-ID: <2jfn91$a6f@mail.fwi.uva.nl> References: <CKxEpn.1Lq@candle.uucp> <1994Feb9.055849.9351@nuchat.sccsi.com> <2jctac$qkd@mail.fwi.uva.nl> <2jekt5$let@nntp2.Stanford.EDU> NNTP-Posting-Host: adam.fwi.uva.nl jonathan@leland.Stanford.EDU (Jonathan Stone) writes: >Casper H.S. Dik (casper@fwi.uva.nl) writes: >>The virtual memory came from Sun. >Whose VM system was derived from 4.2BSD, if I recall correctly. >Didn't SunOS 3.x use a "machine-independent" VM system >that *was* VAX virtual memory structures, and translate in >software to the Sun-2/Sun-3 MMU? >Yes, it's a nitpick, Sun's VM system changed for SunOS 4.x; >I don't know how *much* because I've never studied the SunOS source. >My point is simply that the ancestry is *there*... The SunOS 3.x VM system was derived from 4.2BSD, but that is totally irrelevant, because ... ... the SunOS 4.x VM system is totally different. That's the VM system that got into SVR4. (Ok, they're both VM systems, if that's what you mean) Casper