I need to make a cable - test-drb@ccmp.vtda.org

22 May 2000

On May 21, 18:51, Wayne M. Smith wrote:
...
  I need to make a keyboard cable for one of my Texas
 Instruments Portable Professional Computers.  It is a
 proprietary format with a standard CPU keyboard
 connector on one end and a PS/2 female connector on the
 other.  I have a keyboard cable from a Texas
 Instruments Professional Computer, which has the CPU
 connector (and a grid-type plug on the other end) and
 is a five wire cable.  I had hoped to splice a standard
 PS/2 cable onto it, but upon opening one of these up I
 see there are only 4 wires so I'm a wire short 
Yes, PS/2 only uses 4 wires:

               ------		1  Data
              / 5 3  \		2  (Reserved)
             | ---  1 | 	3  Signal Ground
             | ---  2 | 	4  Power +5V
	      \ 6 4  /		5  Clock
               ------   	6  (Reserved)

...
  My question is, does anyone know of a PS/2 type cable
 that has connections to all 6 wires that I could splice
 onto the keyboard cable I have? 
Some Sun and SGI cables use five or six.  For example, an SGI keyboard
cable for an Indigo uses pins 1-5, and early 4D series use all six.  Some
extension cables sold for mice may have more than 4, because some dual
serial/PS2 mice use them.

-- 

Pete						Peter Turnbull
						Dept. of Computer Science
						University of York