home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!mcsun!uknet!gdt!aber!aberfa!pcg
- From: pcg@aber.ac.uk (Piercarlo Grandi)
- Newsgroups: comp.arch
- Subject: Re: OS/MFT and Macintosh (was: ..History)
- Message-ID: <PCG.92Aug27125826@aberdb.aber.ac.uk>
- Date: 27 Aug 92 12:58:26 GMT
- References: <PCG.92Aug26005248@aberdb.aber.ac.uk> <1992Aug26.150429.462@sctc.com>
- Sender: news@aber.ac.uk (USENET news service)
- Reply-To: pcg@aber.ac.uk (Piercarlo Grandi)
- Organization: Prifysgol Cymru, Aberystwyth
- Lines: 39
- In-Reply-To: smith@sctc.com's message of 26 Aug 92 15: 04:29 GMT
- Nntp-Posting-Host: aberdb
-
- On 26 Aug 92 15:04:29 GMT, smith@sctc.com (Rick Smith) said:
-
- smith> (Piercarlo Grandi) writes:
-
- pcg> Hey, the Mac OS technology is middle sixties vintage (OS/MFT!),
-
- Typo: I meant MVT...
-
- smith> As a point of fact, OS/MFT's operating system technology bears
- smith> almost resemblance to the Mac OS.
-
- Ah yes, of course. That they both provide memory resident tasks, a
- single address space, and other fairly primitive facilities does not
- matter a lot. MVT had limited paging/swapping of task pages, just as the
- newer System 7 has, even if an argument can be made then that System 7
- is more like SVS.
-
- smith> OS/MFT provided a "flat" file system.
-
- Really? That's news.
-
- smith> OS/MFT provided a _fixed_ number of concurrently active
- smith> tasks, while the Mac OS is limited by the available memory (at
- smith> least in my experience).
-
- I meant MVT, sorry. But there is little difference between MFT and MVT
- anyhow.
-
- smith> Most important, the Mac OS is nonpreemptive, which enforces a
- smith> completely different scheduling regime on the OS and its
- smith> executing software.
-
- And so what? That means that it is even more primitive than OS/MVT. At
- least OS/MVT had some rudiments of scheduling, job scheduling, and many
- other things that are lacking in the Mac OS.
- --
- Piercarlo Grandi | JNET: pcg@uk.ac.aber
- Dept of CS, University of Wales | UUCP: ...!mcsun!ukc!aber-cs!pcg
- Penglais, Aberystwyth SY23 3BZ, UK | INET: pcg@aber.ac.uk
-