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