home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.mac.hardware
- Path: sparky!uunet!munnari.oz.au!uniwa!bilby.cs.uwa.oz.au!usenet
- From: Quinn <quinn@cs.uwa.edu.au>
- Subject: Re: Motorola's 68060 for the Mac
- Message-ID: <1993Jan22.054617.25775@bilby.cs.uwa.edu.au>
- X-Xxdate: Fri, 22 Jan 93 05: 43:01 GMT
- Sender: usenet@bilby.cs.uwa.edu.au
- Nntp-Posting-Host: eriodon
- Organization: The University of Western Australia
- X-Useragent: Nuntius v1.1.1d13
- References: <D2150056.o6gh64@erics.infoserv.com>
- Date: Fri, 22 Jan 1993 05:46:17 GMT
- Lines: 14
-
- In article <D2150056.o6gh64@erics.infoserv.com> Eric S. Smith,
- erics@infoserv.com writes:
- >The 68000 contains no MMU, nor is it possible to implement virtual memory
- >with the 68000 - there are some instructions that could not be restarted
- >following a page fault.
-
- The Lisa had an 68000 and implemented virtual memory but only for
- code segments. Therefore I assume you can always manage to restart
- instruction fetches on the 68000. I guess that putting data in
- code segments was frowned upon (and didn't work).
-
- Quinn "The Eskimo!" <quinn@cs.uwa.edu.au> "Support HAVOC!"
- Department of Computer Science, The University of Western Australia
- -- Oh dear I am being nitpicky this week.
-