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Newsgroups: comp.unix.bsd Path: sserve!manuel!munnari.oz.au!uunet!europa.asd.contel.com!darwin.sura.net!jvnc.net!yale.edu!think.com!rpi!psinntp!psinntp!ficc!peter From: peter@ferranti.com (peter da silva) Subject: Re: 386BSD - what a pain to install! Message-ID: <id.X7NT.904@ferranti.com> Organization: Xenix Support, FICC References: <19r472INNnot@corax.udac.uu.se> <1992Sep27.020909.2692@cs.unca.edu> <1992Sep27.091749.2076@fcom.cc.utah.edu> Date: Mon, 28 Sep 1992 21:29:05 GMT Lines: 22 In article <1992Sep27.091749.2076@fcom.cc.utah.edu> terry@cs.weber.edu (A Wizard of Earth C) writes: > The memory protection on a 286 is rather primitive as well, and it's difficult > to limit address spaces. This is only partially true. > This is generally accomplished (by Xenix, as an > example) by only running code in medium model, where you have unlimited text > (read only) pages per program, but only 64K (1 segment) of data (read/write) > pages. This is not true. We've been running Xenix-286 for years with multiple data and multiple code segments. We're talking applications with megabytes of both. Of course, I wouldn't recommend segmented memory to anyone for *fun*! -- Peter da Silva `-_-' Ferranti Intl. Ctls. Corp. 'U` Sugar Land, TX 77487-5012 +1 713 274 5180 Har du kramat din varg idag?