From: "Alexei A. Frounze" <alex DOT fru AT mtu-net DOT ru>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: NumLock
Date: Fri, 26 May 2000 01:17:07 +0400
Organization: MTU-Intel ISP
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Just use DPMI stuff. Some simple and very useful functions are available in
the "sys/movedata.h" file.

Here goes the example:
---------------8<----------------
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#include <sys/movedata.h>

int main() {
  char k;
  
  clrscr();
  printf ("hit Enter for NumLock switching...\n");
  getch();

  _dosmemgetb (0x417, 1, &k);
  k ^= 1<<5;
  _dosmemputb (&k, 1, 0x417);
  
  printf ("hit Enter for NumLock switching...\n");
  getch();

  _dosmemgetb (0x417, 1, &k);
  k ^= 1<<5;
  _dosmemputb (&k, 1, 0x417);

  return 0;
}
---------------8<----------------

Good Luck
Alexei A. Frounze
-----------------------------------------
Homepage: http://alexfru.chat.ru
Mirror:   http://members.xoom.com/alexfru

Kai Dietrich wrote:
> 
> Hi!
> 
> > set/reset bit #5 at real mode segment 0x40 offset 0x17 byte.
> >
> > Good Luck
> > Alexei A. Frounze
> 
> Hmm, I had no luck...
> How do I get acces to a real mode segment+offset in DJGPPs DPMI mode
> (example code would be a great help)?
> 
> TIA
> Bye
>         Kai