Path: utzoo!attcan!uunet!husc6!cmcl2!nrl-cmf!ukma!rutgers!bellcore!texbell!uhnix1!sugar!ficc!peter
From: peter@ficc.uu.net (Peter da Silva)
Newsgroups: comp.arch
Subject: Re: Operating Systems (Re: archimedes)
Keywords: Archimedes, OS
Message-ID: <2310@ficc.uu.net>
Date: 28 Nov 88 16:59:56 GMT
References: <1216@dutesta.UUCP> <2212@ficc.uu.net> <372@eutrc3.UUCP> <12633@steinmetz.ge.com>
Organization: SCADA
Lines: 15

In article <12633@steinmetz.ge.com>, davidsen@steinmetz.ge.com (William E. Davidsen Jr) writes:
>   Everyone has their own "required" set of features to differentiate a
> DOS from a real operating system. Mine certainly includes the concept of
> file ownership and protection. To do that you have to be able to have
> memory and i/o control of some sort, to prevent direct physical i/o.

This limits the set of hardware a "real O/S" can run on, of course. For
machines in the price range we're talking about this is out of the question.
On the other hand a multitasking O/S without multiuser protection can
run just fine in a 48K machine (OS/9 on the Radio Shack Color Computer,
for example).
-- 
Peter da Silva  `-_-'  Ferranti International Controls Corporation
"Have you hugged  U  your wolf today?"     uunet.uu.net!ficc!peter
Disclaimer: My typos are my own damn business.   peter@ficc.uu.net