From owner-freebsd-questions@FreeBSD.ORG  Tue Jun 13 06:03:43 2006
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Date: Tue, 13 Jun 2006 08:03:17 +0200 (CEST)
From: Otto Moerbeek <otto@drijf.net>
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To: Ted Mittelstaedt <tedm@toybox.placo.com>
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Cc: John Nemeth <jnemeth@victoria.tc.ca>, misc@openbsd.org,
	Ted Unangst <ted.unangst@gmail.com>, freebsd-questions@freebsd.org,
	=?iso-8859-1?Q?H=E1morszky_Bal=E1zs?= <balihb@ogyi.hu>,
	netbsd-users@NetBSD.org, Nikolas Britton <nikolas.britton@gmail.com>
Subject: Re: wikipedia article
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On Mon, 12 Jun 2006, Ted Mittelstaedt wrote:

> >-----Original Message-----
> >From: John Nemeth [mailto:jnemeth@victoria.tc.ca]
> >Sent: Monday, June 12, 2006 1:15 PM
> >To: Ted Mittelstaedt; Nikolas Britton; Ted Unangst
> >Cc: Hamorszky Balazs; misc@openbsd.org; freebsd-questions@freebsd.org;
> >netbsd-users@NetBSD.org
> >Subject: RE: wikipedia article
> >
> >
> >On Nov 1,  6:11pm, "Ted Mittelstaedt" wrote:
> >}
> >} Prior to the release of the 80386 the Intel processors didn't have
> >} memory protection which was a requirement of any processor running
> >} the BSD kernel.
> >
> >     This is not entirely true.  The 80286 had memory protection.
> >However, its memory protection was completely based on segments (i.e.
> >it could not do paging).
> 
> Oh, yeah, your right about that.  Me bad.
> 
> >Also, it was only a 16 bit processor.
> 
> What was the bit size of the CPU's originally used to write UNIX in Bell
> Labs?

What's more, iirc the MMU of the pdp11 isn't what we call a MMU today,
it could not even do paging.

	-Otto