From owner-freebsd-hardware Tue Dec 11 10:24:12 2001 Delivered-To: freebsd-hardware@freebsd.org Received: from ns.yogotech.com (ns.yogotech.com [206.127.123.66]) by hub.freebsd.org (Postfix) with ESMTP id 3426E37B421 for ; Tue, 11 Dec 2001 10:23:50 -0800 (PST) Received: from caddis.yogotech.com (yogotech.nokia.com [4.22.66.156]) by ns.yogotech.com (8.9.3/8.9.3) with ESMTP id LAA05533; Tue, 11 Dec 2001 11:23:36 -0700 (MST) (envelope-from nate@yogotech.com) Received: (from nate@localhost) by caddis.yogotech.com (8.11.6/8.11.6) id fBBINYg00437; Tue, 11 Dec 2001 11:23:34 -0700 (MST) (envelope-from nate) From: Nate Williams MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15382.20261.860671.461839@caddis.yogotech.com> Date: Tue, 11 Dec 2001 11:23:33 -0700 To: Bakul Shah Cc: nate@yogotech.com (Nate Williams), 9ustavo 9onzalez 9iron , freebsd-hardware@FreeBSD.ORG Subject: Re: i286 In-Reply-To: <200112110552.AAA08679@valiant.cnchost.com> References: <15381.12530.404008.733531@caddis.yogotech.com> <200112110552.AAA08679@valiant.cnchost.com> X-Mailer: VM 6.96 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid Reply-To: nate@yogotech.com (Nate Williams) Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org > > > 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