Posted by Hrothgar The Great on 4, 2001 at 2:17 AM:
I ripped the controller out of a fairly new Gateway PS/2 keyboard yesterday. I then proceeded to try to puzzle out the keyboard matrix using methods found on this website. There are 24 pins on the connector in what appears to be one group of 15 and one group of 9. Unfortunately, which pin belonged to which group was not so simple...
After much frustration, I figured out which pins interfaced with which other pins and found something like this: The rows of my matrix are made with pins 10,12,14,16,18,20,21,and 23 (I dont have my diagram with me so hopefully that was what they were). The columns were the remaining pins: 1-9,11,13,15,17,19,22,24. This yielded every key possible on this keyboard. Those are definitely the correct groups. It seemed to me while reading this site that the layout of the rows and colums would be more closely grouped rather than so bizarrely interspersed. Perhaps someone could tell me if they had to use a similar mapping or not. If anyone is interested, I can supply more details about this particular type of keyboard. Just let me know.