Date: Thu, 18 Jul 1996 10:11:05 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: Greg Bond <bond AT ee DOT ubc DOT ca>
Cc: djgpp AT delorie DOT com
Subject: Re: Interrupt overhead with DJGPP's extender
In-Reply-To: <31EC2DD4.7A94@ee.ubc.ca>
Message-Id: <Pine.SUN.3.91.960718100837.338E-100000@is>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII


On Tue, 16 Jul 1996, Greg Bond wrote:

> I understand that DJGPP programs run with the help of a DOS extender to 
> enable execution in a 32 bit protected address space under DOS.  I'm 
> curious what overhead DJGPP's DOS extender imposes on programs in 
> general (I've been able to find no documentation on-line pertaining to 
> the functionality of DOS extenders). 

DJGPP v2 is an extender-less environment, it only needs a DPMI server to 
run.  As there are quite a few such servers available, the performance of 
the interrupt handler will vary accordingly.