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From: papa@pollux.usc.edu (Marco Papa)
Newsgroups: comp.sys.amiga
Subject: Re: Multi-tasking and OS books
Message-ID: <17195@usc.edu>
Date: 13 May 89 02:35:41 GMT
References: <17148@usc.edu> <24279@agate.BERKELEY.EDU> <18268@cup.portal.com> <17183@usc.edu> <11336@polyslo.CalPoly.EDU>
Sender: news@usc.edu
Reply-To: papa@pollux.usc.edu (Marco Papa)
Organization: Felsina Software, Los Angeles, CA
Lines: 24

In article <11336@polyslo.CalPoly.EDU> dorourke@polyslo.CalPoly.EDU (David M. O'Rourke) writes:
>In face I believe OS/2 isn't pre-emptive either, it does task switches
>on OS calls {I might be wrong}.

You ARE wrong.

>the next time slice of CPU.  Failing to have an eternal clock, you then have
>to perform the task switch at some other time.  I believe hooking this
>task switch in with one or more OS calls is an undesierable, but workable
>way of doing things.  Your right multi-finder isn't pre-emptive, but it
>is multi-tasking.

Multi-Finder is a program switcher TOTALLY under program control. The 
program MUST be written with switch calls all over the place. When 1 simgle 
program that doesn't use multi-finder is run, NO OTHER program can take
control.  Apple is "advertising" Systems 7.0 as "True Multitasking" when 
comparing it to OS/2.  Such a comparison is a misrepresentation at minimum
and deceptive advertising in truth.

-- Marco
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