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Date: Mon, 01 May 2000 18:08:03 +0200
From: Gautier <gautier DOT demontmollin AT maths DOT unine DOT ch>
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Subject: Re: 3rd Try: Maybe an asm problem? (Problems linking)
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> > __dpmi_yield is not for task switching, it's for releasing the current
> > time slice allotted by Windows (or any other multi-tasking scheduler).

Alexei:

> Just some kind of a synonym. :)
 
Sorry to contradict, but the "task switching" jargon is for the user
choosing manually and delibarately a task to be foreground of his/her display.
It's rather an antonym!

> Do you bother about that while you're programming? I.e. do you write a custom
> keyboard read function that calls that thing?

In an OO environment that provides events like Turbovision, it suffices to
put a call to the "Release time slice" for the "idle event" case!

> Or maybe we all develop applications for background that should work and be
> invisible? I dboubt. :)

Inexact: that "Release time slice" can act when your program is at foreground
and visible. It helps the background tasks to run faster!

> How about old DOS programs? Are you sure all they release timeslice?

Surely that if you unassemble a commercial DOS app. (e.g. DOS interactive
commands) you'll find plenty of them...

_____________________________________________
Gautier  --  http://members.xoom.com/gdemont/