Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker!spdcc!esegue!johnl
From: johnl@esegue.segue.boston.ma.us (John R. Levine)
Newsgroups: comp.arch
Subject: Re: 64-bit addresses
Message-ID: <1990Feb22.180011.11116@esegue.segue.boston.ma.us>
Date: 22 Feb 90 18:00:11 GMT
References: <1654@aber-cs.UUCP>
Reply-To: johnl@esegue.segue.boston.ma.us (John R. Levine)
Organization: Segue Software, Cambridge MA
Lines: 12

>In article <38764@apple.Apple.COM> baum@apple.UUCP (Allen Baum) writes:
>  
>  First of all, IBM has patents on their particular implementation of a
>  reverse map MMU.  This does not imply they invented it, ...

Who did invent reverse map MMUs?  The earliest one I'm aware of is the IBM
System/38, nearly 15 years ago.  Was there an earlier one?  (For that matter,
how did the Atlas' pager work?)
-- 
John R. Levine, Segue Software, POB 349, Cambridge MA 02238, +1 617 864 9650
johnl@esegue.segue.boston.ma.us, {ima|lotus|spdcc}!esegue!johnl
"Now, we are all jelly doughnuts."