From: martin DOT kahlert AT keksy DOT mchp DOT siemens DOT de (Martin Kahlert)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: help! asm and djgpp
Date: 3 Jul 1997 14:16:45 GMT
Organization: Siemens Inc.
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Message-ID: <5pgc8d$jkk$1@salomon.mchp.siemens.de>
References: <01bc863f$7681a200$LocalHost AT default>
Reply-To: Martin DOT Kahlert AT mchp DOT siemens DOT de
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To: djgpp AT delorie DOT com
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In article <01bc863f$7681a200$LocalHost AT default>,
	"Willy Gardiol" <gardiol AT iol DOT it> writes:
> Hi!
> I am new with djgpp. I started using it to access VESA 2.0 linear frame
> buffer addres.
> I use the 
> _farnspokeb( svga_addres + y*640 + x, byte_color);
> 
> but is SLOW when i need to copy for example a square 
> of 100*100 pixels from a virtual screen to the svga.
> 
> This is my way:
> for ( x = a; x < b; x++)
>    for (y = c ; y < d; y++)
> 	_farnspokeb( SVGA_ADDR + y*640 + x , virtual_screen[x][y] );

look at http://www.hardlink.com/~utopium (The DJGPP Book Project)
Martin.