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- Newsgroups: comp.sys.amiga.misc
- Path: news.sprintlink.net!eskimo!drizzit
- From: drizzit@eskimo.com (G. Baldwin)
- Subject: Re: OS features
- X-Nntp-Posting-Host: eskimo.com
- Message-ID: <DKI389.CFw@eskimo.com>
- Sender: news@eskimo.com (News User Id)
- Organization: Eskimo North (206) For-Ever
- X-Newsreader: TIN [version 1.2 PL2]
- References: <edmundv.42zj@grafix.xs4all.nl>
- Date: Mon, 1 Jan 1996 11:43:20 GMT
-
- Edmund Vermeulen (edmundv@grafix.xs4all.nl) wrote:
- : So you are saying that the OS guys at Commodore-Amiga had never seen UNIX and
- : its inbuilt memory protection? And furthermore that they didn't know about the
- : 68020 and its optional MMU hardware?
-
- : They could have easily made provisions for memory protection in the Amiga's OS
- : if they had wanted to. Instead they deliberately chose not to. The Amiga's high
- : performance and low memory usage were a direct result of this.
-
- It was never used because back in 1984, Memory Protection was really
- only used with Unix. Nobody else had it, so the OS was built w/o it
- as well. And since there were no restrictions here, the OS was simply
- made in a very liberal, open state in which everything shared
- everything. You can't do this well in a protected state. And since
- the OS was originally designed to work with only 256Kb of memory, your
- new PreEmptive OS couldn't be bogged down in the slightest bit.
-
- Just my 2 cents worth... 8)
-
- Greg Baldwin (drizzit@eskimo.com)
- * Amiga fan and junkie for way too long. 8)
- * WWW @ http://www.eskimo.com/~drizzit/
-
-