Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!pt.cs.cmu.edu!andrew.cmu.edu!jk3k+
From: jk3k+@andrew.cmu.edu (Joe Keane)
Newsgroups: comp.arch
Subject: Re: DECSYSTEM 20
Message-ID: <8Yq6yDG00Xc701Uh0u@andrew.cmu.edu>
Date: 3 Aug 89 16:15:11 GMT
Organization: Mathematics, Carnegie Mellon, Pittsburgh, PA
Lines: 7
In-Reply-To: <cYpQ1UW00VoBE9OFsn@andrew.cmu.edu>References: <3256@wpi.wpi.edu> <EGDORF.89Jul21195924@zaphod.lanl.gov> <443@anasaz.UUCP> <BRUCE.89Jul23155646@heather.pooh.com> <3893@phri.UUCP> <433@scr1.UUCP> <976@mplvax.EDU> <441@scr1.UUCP> <cYpQ1UW00VoBE9OFsn@andrew.cmu.edu>

I wrote:
>The 11 has its registers in _physical_ memory.  

I meant they appear in the physical address space, as opposed to virtual.  Of
course are physically with the rest of the processor, which means you can write
(small) programs with no memory.  ``Hey, let's see what happens if you pull out
R5.''  Can't do _that_ on a 68000!