Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!decwrl!sun-barr!rutgers!sunybcs!ugkamins
From: ugkamins@sunybcs.uucp (John Kaminski)
Newsgroups: comp.sys.amiga
Subject: Re: Multi-tasking and OS books
Message-ID: <5853@cs.Buffalo.EDU>
Date: 14 May 89 03:27:01 GMT
References: <17148@usc.edu> <24279@agate.BERKELEY.EDU> <18268@cup.portal.com> <17183@usc.edu> <11336@polyslo.CalPoly.EDU> <17195@usc.edu> <11373@polyslo.CalPoly.EDU>
Sender: nobody@cs.Buffalo.EDU
Reply-To: ugkamins@sunybcs.UUCP (John Kaminski)
Organization: SUNY/Buffalo Computer Science
Lines: 41
Quote: I hate long references lists.

In article <11373@polyslo.CalPoly.EDU> dorourke@polyslo.CalPoly.EDU (David M. O'Rourke) writes:
=>  BTW:  I've done some checking on OS/2, are you 100% sure it doesn't task
=>switch on OS call.

's'matter, your "?" key stuck? :-)

=>It's suppose[d] to run on older 80286's which I'm sure don't
=>have the hardware to do it pre-emptive.  Perhaps a calm, cool and collected
=>usenet person could set the record straight.

Unfortunately, you are sure of a falsehood.  Check MINIX, which will run on
the "lowly" original IBM PC, which use{s,d} a 8088 chip, of which the 80286
is a superset.  Even directly to the point, MINIX will run on an AT which is
definitely 80286-based.  And MINIX definitely has preemptive process sched-
uling.  MINIX, as I understand it, uses a timer chip in the PC to generate
periodic interrupts.  Also, consider that the PC and the PC XT had no standard
real time clock, and all those dates and times in the directory listing are
derived from the user entering the date/time at boot time and that
aforemetioned (sp?) interrupt clock.
=>-- 
=>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\|/////////////////////////////////////////
=>David M. O'Rourke____________________|_____________dorourke@polyslo.calpoly.edu
=>|       It's only 1's & 0's, so how difficult can Computer Science be?        |
=>|:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::|

Extremely.

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We can only contemplate the facts as we are able to perceive them.
Do we get what we deserve, or deserve what we get?
"I've seen yellow stripes in the middle of the road before, kids, but
  never quite this WIDE!"  -- Tom "T-bone" Stankus