Xref: news2.mv.net comp.os.msdos.djgpp:6130
From: adrian AT adriant DOT ozonline DOT com DOT au (root)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Multitasking in DOS (fwd)
Date: 18 Jul 1996 16:44:31 GMT
Organization: Australia OnLine
Lines: 16
Message-ID: <4slplf$3rq@budapest.ozonline.com.au>
References: <199606261950 DOT XAA00784 AT video DOT yars DOT free DOT net>
NNTP-Posting-Host: adriant.ozonline.com.au
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

: Preemptive multitasking on 8088? Yes, it is possible. (Look at minix)
: Preemptive multitasking in DOS? I'm in deep doubt.
: There is a bunch of problems on your way.

I haven't tried multi-tasking in DOS, however multi-threading under DOS, and
even under DOS4GW is quite possible. So long as the DPMI allows re-entrant
hardware interrupts (Windows and Win95 don't, cheap shitty DPMI
implementation) you can hang the scheduler of the timer interrupt. I used
this in an FMV player in order to read from CD in the back-ground.

Yours truly
Adrian Thewlis


adriant AT ozonline DOT com DOT au