Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!mit-eddie!uw-beaver!zephyr.ens.tek.com!videovax!dougs
From: dougs@videovax.tv.tek.com (Doug Stevens)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Disabling an Internal DOS Command
Summary: Turning off numlock
Message-ID: <6326@videovax.tv.tek.com>
Date: 12 Mar 91 18:15:03 GMT
References: <1991Mar4.151301.12925@cbnewsk.att.com> <1991Mar6.233821.15345@bradley.bradley.edu>
Distribution: usa
Organization: Tektronix TV Measurement Systems, Beaverton OR
Lines: 20

> In <LEVERICW.91Mar4113004@cheetah.ece.clarkson.edu> levericw@cheetah.ece.clarkson.edu (Walden Leverich) writes:
> 
> >> Is there any way to set the state of the NumLock key.  I already know
> >> how to detect the state of the key, but what I really need to do is
> >> set it to be either on or off.  Any help would be appreciated.
> 

Here's what I use (it turns off the light on my machines, too):

	#define KEYBD_STATUS_BYTE	((char far *)0x00400017L)
	
	#define NUM_LOCK_MASK	0x20
	
	void main(void)
	{
		*KEYBD_STATUS_BYTE &= ~NUM_LOCK_MASK;
	}

(obviously, it can be made smaller in asm language, but I wanted something
quick and dirty).