Date: Tue, 11 Dec 2001 11:23:33 -0700 From: Nate Williams <nate@yogotech.com> To: Bakul Shah <bakul@bitblocks.com> Cc: nate@yogotech.com (Nate Williams), 9ustavo 9onzalez 9iron <gstgnzgr@libertad.univalle.edu.co>, freebsd-hardware@FreeBSD.ORG Subject: Re: i286 Message-ID: <15382.20261.860671.461839@caddis.yogotech.com> In-Reply-To: <200112110552.AAA08679@valiant.cnchost.com> References: <15381.12530.404008.733531@caddis.yogotech.com> <200112110552.AAA08679@valiant.cnchost.com>
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> > > Exist some kind of FreeBSD's version for intel 286 processor? > > > > Never in a million years. There exists no 'real' unix for the 286, > > since the 286 hardware is incapable of protecting processes well enough > > to be safe. > > Not that anyone cares any more but... i286 provides good > enough protection -- you can have each prcoess in its own > protected address space without any external h/w support > (like we had to do for Moto 68000 based machines). What it > didn't provide was support for paging. As I understand, don't you need paging for 'real' protection to work right, otherwise you're limited to one/two processes on the box? > A company called > Microport released a "real" unix for 286 in, I think, 1985. > Another company called Bell Technologies used to sell PC/ATs > bundled with Microport's Unix and their own drivers for > various I/O devices until Intel bought them out. Microport > is still around but don't know if they sell Unix on PC/ATs > anymore! Thanks for the info! Nate To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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