X-Lock lights, changing - using the Kb controller.
>> does anyone know how to change the status of the num/caps/scroll lock lights
>>by talking directly to the kb controller, I am aware of the byte at
>>0x0000:0x0417 but it *seems* that you have to call a dos kb routine to get it
>>to change the lights.
> I'm interested to know the answer to this also. Does someone know the obscure
>ports and values that need to be out'd to make this work?
I have used 0040:0017h to change the num-lock status and it also changed the
light. I once tried to talk to the keyboard directly, using a handful of
technical reference manuals, it worked well on some on one brand of
keyboard, but hung the machine with another. An old Compaq (early 386/25,
cannot remember the name of the machine) Technical reference manual was
very well documented. I bet if you take a name brand keyboard apart, you
can probably get the chip number and get free data sheets from them.