Following is a description of the pin connections for a FastLynx
parallel cable.  The cable has a male DB25 connector at both ends.

            25 pin          25 pin
            ------          ------
            pin 2   <---->  pin 15
            pin 3   <---->  pin 13
            pin 4   <---->  pin 12
            pin 5   <---->  pin 10
            pin 6   <---->  pin 11

            pin 15  <---->  pin 2
            pin 13  <---->  pin 3
            pin 12  <---->  pin 4
            pin 10  <---->  pin 5
            pin 11  <---->  pin 6

            pin 25  <---->  pin 25

The second set of 5 wires is the reverse of the first set.

