Up front i dont know much about wiring, I bought an old cnc router that uses an old IBM with AmeriCAM software. The software looks like a simple 2d type software that uses dxf or VC (visioncam) files. It uses pacific scientific 6410 stepper drivers and a augat rdi 2m25ds breakout board. I downloaded Mach3 but have no idea what the ports and pins configuration should be. The stepper driver has a 9 pin connector but only 4 wires from that connector to the breakout board. I checked with a multimeter and they seem to be step+ dir+ and step- dir-. Thanks in advance for any help. I added some picture if that helps and can add more if needed. Tanks again.