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From: toma@tekgvs.LABS.TEK.COM (Tom Almy)
Newsgroups: comp.sys.ibm.pc
Subject: Re: NUMLOCK
Keywords: NUMLOCK,SCROLL LOCK,CAPS LOCK
Message-ID: <6343@tekgvs.LABS.TEK.COM>
Date: 13 Nov 89 15:44:46 GMT
References: <523@darth.PGH.PA.US>
Reply-To: toma@tekgvs.LABS.TEK.COM (Tom Almy)
Organization: Tektronix, Inc., Beaverton,  OR.
Lines: 23

In article <523@darth.PGH.PA.US> liber@darth.PGH.PA.US (Eric Liber) writes:
>The numlock, scroll lock and caps lock lights and system status are recorded
>and set by the byte at 0040:0017 the bits of the byte have the following 
>meaning:
>
>	bit 0 - if set (=1) then the keyboard is in a permanent shifted state
No (from IBM PC/AT Technical Reference Manual), 
	bit 0 - right shift key depressed
> 	bit 1 - ?
	bit 1 - left shift key depressed
>	bit 2 - ?
	bit 2 - control key depressed
>	bit 3 - ?
	bit 3 - alt key depressed
>	bit 4 - scroll lock  - 0 = off  1 = on
>	bit 5 - num lock  -    0 = off  1 = on
>	bit 6 - caps lock -    0 = off  1 = onn

	bit 7 - Insert state active (toggles with Insert key??)

Tom Almy
toma@tekgvs.labs.tek.com
Standard Disclaimers Apply