Article 35177 of comp.sys.apple2:
Subject: Re: Entended GS Keyboard Lights
Sender: root@ucsbcsl.ucsb.edu
The extended keyboard's lights are accessed through ADB commands.  You use the
ADB SendInfo call to send the commands to the keyboard.  The parameters are:
 2 byte parameter count
 4 byte pointer to data to send to the keyboard
 2 byte $00A2 - tells ADB Tools to send data to the keyboard
The ADB data is in the form (in binary) 1111_1abc_1111_1111
Where a is the numlock light, b is the caps lock light, and c is the scroll
lock light.  Set the bit to turn on the light, clear it to turn it off.
This information comes from the now-defunct 8/16 magazine, August 1990 issue.
*-Eric Shepherd-----uerics@mcl.mcl.ucsb.edu-----------AOL: Sheppy--------------*
* Programmers' Tip #1: When in doubt, rewrite from scratch!                    *
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