Date: Wed, 24 Sep 1997 12:29:14 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: Nate Eldredge <eldredge AT ap DOT net>
cc: Orlando Andico <orly AT dilnet DOT upd DOT edu DOT ph>,
        firewind <firewind AT metroid DOT dyn DOT ml DOT org>, djgpp AT delorie DOT com
Subject: Re: DJGPP and optimized code
In-Reply-To: <199709240323.UAA02048@adit.ap.net>
Message-ID: <Pine.SUN.3.91.970924122852.18049N-100000@is>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Precedence: bulk


On Tue, 23 Sep 1997, Nate Eldredge wrote:

> writes to the NUL device will still go through DOS, requiring a mode switch
> and God-knows-how-much DOS overhead.

AFAIK, the DOS overhead in writing to NUL is nil.  It involves a
single far call to the entry point of the NUL device driver, which
then immediately returns to the caller.