Path: utzoo!mnetor!uunet!nuchat!sugar!peter
From: peter@sugar.UUCP (Peter da Silva)
Newsgroups: comp.sys.m68k
Subject: Re: Apollo/Sun 68000,68010,68020
Message-ID: <1795@sugar.UUCP>
Date: 4 Apr 88 14:59:05 GMT
References: <3b219db7.d858@apollo.uucp> <903@cayman.COM> <1525@puff.cs.wisc.edu>
Organization: Sugar Land UNIX - Houston, TX
Lines: 19
Summary: UNIX != Demand Paged VM.

In article <1525@puff.cs.wisc.edu>, richardk@puff.cs.wisc.edu (Richard Kottke) writes:
>   Recovering from a bus error is a problem only if the system uses a virtual
> memory scheme (which it would if it was running UN*X.)  If the system was
> running, say, OS-9/68k, then virtual memory is not required and the bus error
> is a real bus error, not a flag indicating that a new page needs to be brought
> in.

Sorry, but UNIX does not imply demand paged virtual memory. We have a couple
of 68000-based UNIX boxes not 4 feet away from me right now.

I can't say why OS/9 hasn't caught on more than it has, but I suspect that
Microware's licensing policies may have something to do with it, judging
by what I have heard of them.

OS/9 has some fundamental design differences from UNIX that do make it a
pain to do the ports, also.
-- 
-- Peter da Silva  `-_-'  ...!hoptoad!academ!uhnix1!sugar!peter
-- Disclaimer: These U aren't mere opinions... these are *values*.