• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 215
  • Last Modified:

Sending commands to keyboard

I have a program which requires access an IBM PS2 keyboard.  Specifically I need to command the keyboard to  change scan set to scan set 3 and also turn on and off the keyboard LEDs.  I have tried writing keyboard control codes to port 60, but the commands do not seem to get to the keyboard.  Are there some special commands  necessary to do this?
0
blatan
Asked:
blatan
1 Solution
 
blatanAuthor Commented:
Edited text of question
0
 
busukaCommented:
Maybe you forgot to update memory address: 0:417h
There you LED status lights and Cntrl/Alt/Shift states. Only
after this you write to port (don't remember right now its number).
0
 
richrussellCommented:
It's a while since I wrote any code that accesses the keyboard controller directly, but you will probably find some assistance from this page:

http://www.repairfaq.org/filipg/LINK/PORTS/F_Keyboard_FAQ.html#KEYBOARDFAQ_009

I found loads of information there which really helped.
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Worried about phishing attacks?

90% of attacks start with a phish. It’s critical that IT admins and MSSPs have the right security in place to protect their end users from these phishing attacks. Check out our latest feature brief for tips and tricks to keep your employees off a hackers line!

Tackle projects and never again get stuck behind a technical roadblock.
Join Now