From:	lonniem AT nol DOT net
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Disabling Protected Mode
Date:	Tue, 31 Dec 1996 04:33:10 GMT
Organization:	Networks On-Line
Lines:	23
Message-ID:	<5a9u34$2i4$2@news.nol.net>
References:	<5a7r11$o1n$1 AT mhafn DOT production DOT compuserve DOT com>
NNTP-Posting-Host:	ip38-1.nol.net
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

John Savage <102371 DOT 734 AT CompuServe DOT COM> wrote:

>I heard there was some way to disable protected mode in DJGPP... 
>what I really want to do is be able to access video RAM directly. 
> Is this possible?	
#include <sys/nearptr.h>

int main (void)
{
  __djgpp_nearptr_enable ();

  ..... /* DO STUFF */

  __djgpp_nearptr_disable ();
}

It doesn't disable protected mode but it is a quick fix for fast
graphics.  It has it's problems though.  It's all in the FAQ.  Read
it.

Lonnie McCullough
lonniem AT mail DOT utexas DOT edu

- Raw text -