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Date:      Mon, 10 Dec 2001 21:52:56 -0800
From:      Bakul Shah <bakul@bitblocks.com>
To:        nate@yogotech.com (Nate Williams)
Cc:        9ustavo 9onzalez 9iron <gstgnzgr@libertad.univalle.edu.co>, freebsd-hardware@FreeBSD.ORG
Subject:   Re: i286 
Message-ID:  <200112110552.AAA08679@valiant.cnchost.com>
In-Reply-To: Your message of "Mon, 10 Dec 2001 15:02:26 MST." <15381.12530.404008.733531@caddis.yogotech.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.  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!

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