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Article #2123Re: Unix without an MMU
From: John Moore
Date: Tue, 14 Jan 1986 14:24
Date: Tue, 14 Jan 1986 14:24
28 lines
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1848 bytes
>(and VENIX, Xenix, ...) on IBM PCs doesn't really count as secure.
>(Ergo it's not UNIX.) Processes can mangle each other at will.
^^^ ^^^^ Nonsense! It works find as UNIX. It is true
that it is not hacker protected, but most single computer UNIX's
have only one user anyway. To me UNIX is a portable environment
offering a wide selection of nifty tools. That's just what I have
here on my VENIX.
>
>In short, it's not really UNIX there, and it pretty much DOES have an
>MMU. Better than nothing, but I wouldn't buy it. UNIX needs at LEAST
>memory mapping. This can be real cheap! but the 520ST doesn't have it.
^^^^^^^^^^^^^^^ You just haven't shown this. The extreme purist view that
PC UNIX's aren't really UNIX doesn't wash. On the other hand, there is
no denying the value of memory mapping
>
>--
>David Brownell
>EnMasse Computer Corp
>...!{harvard,talcott,genrad}!enmasse!dave
--
John Moore (NJ7E/XE1HDO)
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!genrad!mit-eddie!think!harvard!seismo!lll-crg!qantel!hplabs!hao!noao!terak!mot!anasazi!john From: john@anasazi.UUCP (John Moore) Newsgroups: net.micro.atari Subject: Re: Unix without an MMU Message-ID: <475@anasazi.UUCP> Date: Tue, 14-Jan-86 09:24:33 EST Article-I.D.: anasazi.475 Posted: Tue Jan 14 09:24:33 1986 Date-Received: Sun, 19-Jan-86 04:08:41 EST References: <8601071721.AA03900@ucbvax.berkeley.edu> <11372@ucbvax.BERKELEY.EDU> <520@enmasse.UUCP> Reply-To: john@anasazi.UUCP (John Moore) Organization: Anasazi, Phoenix Az. Lines: 28