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From: NoEmailAds AT execpc DOT com (Chris Giese)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: 0xB800:0000 = ... ;
Date: Mon, 13 May 2002 03:44:05 GMT
Organization: PROPULSION GROUP
References: <Xns920CEC3CFFB05adminraf256com AT 213 DOT 180 DOT 128 DOT 20>
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"Rafal 'Raf256' Maj" <admin AT raf256 DOT com> wrote:

>Hello,
>what is the fastest way in DJGPP to access conventional memory (video ram) 


#include <sys/nearptr.h> /* __djpp_nearptr_enable(), __djgpp_conventional_base */
#include <string.h> /* strcpy() */
#include <stdio.h> /* printf() */
#include <crt0.h> /* _crt... */

int main(void)
{	if(!(_crt0_startup_flags & _CRT0_FLAG_NEARPTR))
	{	if(!__djgpp_nearptr_enable())
		{	printf("Could not enable nearptr access\n");
			return 1; }}
/* the alternating spaces are black-on-green attribute bytes */
	strcpy((char *)0xB8000 + __djgpp_conventional_base, "H e l l o ");
	return 0; }