I just upgraded my Lathe and have a extra controller. I have rewired the DB 25 connector to match Mach pin configuration to controller. I have moved the new controller "A axis" to Port 1 a known working port.  Moved my servos to new PCI parallel port 2. Router works well but I am not having success with the "A axis" stepper motor.  When I measure DC Voltage on step/Dir pin to pin 14 I get 4 V in one direction and 0 in the other.  Motor makes an initial step every now and then when jogged but stops.
 Thanks in advance for any advice.
                                    Mike