I took apart my PS/2 Keyboard and salvaged the actual cord. On one end, there's the connecter, of course, which has your standard 6 pins (2 of which aren't used in a PS/2 Keyboard). 1- Data 2- Not used 3- GND 4- VCC 5- Clock 6- Not used On the other end of the cord, there's the connecter that connects to the circuitry inside the keyboard. I believe this is called the SDL (5 pin SDL), which clips to pins. On this end, there's 5 pins (or clips). I'm not sure on the numbering of this end, but it's color coded. From one end it the other, it goes: Black White Brown Red Green Not knowing much about how the cord actually works, I put 0.5 Volts on each of these colored pins (one at a time), to see on which of the 6 pins the voltage reaches. Black goes to Pin 3 (GND) White goes to Pin 4 (VCC) Brown goes to Pin 3 (GND) Red goes to Pin 6 (Not used) Green goes to Pin 2 (Not used) So my question is, how do I get data flowing to Pins 1 and 5 of the 6-PIN PS/2 Connecter (Data and Clock)? Also, what do the 2 unused pins do? (Since voltage (in my testing) is going through to those 2 pins, but they're not supposed to do anything).

Voltage goes thru pin 6 and pin 2 because there is a wire running from the PS/2 connector to the SDL. These 2 connections would be for if your mouse connected to your keyboard. Pin 2 is mouse date and pin 6 is mouse clock. As far as pin 5, the clock frequency is supplied from the keyboard. As for the data pin 1 is the link from computer to keyboard to transfer what key was pressed. Is this what you're looking for? If it ain't broke upgrade it!!!

thanks. that certainly explains Pins 6 and 2: mouse! however, i'm working on a project, and i need to know, manually, how i can get a signal (data and clock) pumping to Pins 1 and 5 through the SDL.