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Mail Archives: djgpp/1998/01/20/04:40:55

Message-Id: <m0xuC00-000S2oC@inti.gov.ar>
Comments: Authenticated sender is <salvador AT natacha DOT inti DOT gov DOT ar>
From: "Salvador Eduardo Tropea (SET)" <salvador AT inti DOT gov DOT ar>
Organization: INTI
To: Michael Zanyat <ledana AT netway DOT at>, djgpp AT delorie DOT com
Date: Mon, 19 Jan 1998 11:13:06 +0000
MIME-Version: 1.0
Subject: Re: Fast memory
In-reply-to: <34C057FC.9BFB8933@netway.at>

Michael Zanyat <ledana AT netway DOT at> wrote:

> Is there a difference in memory access speed using nearptr or other
> methods?
> Or better: What is the fastest way (memory) for virtual screens and
> VGA(13h)?
If you will use a virtual video screen nearptrs aren't much better than using 
the functions to copy blocks to the DOS memory. That's because the overhead is 
small.
I found that farptrs is as fast as nearptrs even if your transfers are 300 
bytes long.

SET 
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Visit my home page: http://set-soft.home.ml.org/
or
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Salvador Eduardo Tropea (SET). (Electronics Engineer)
Alternative e-mail: set-sot AT usa DOT net - ICQ: 2951574
Address: Curapaligue 2124, Caseros, 3 de Febrero
Buenos Aires, (1678), ARGENTINA
TE: +(541) 759 0013

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