Got an older mid-later 80's vintage Minitech, looking for the port pinout. TIA

Sorry I can't answer your question. However, I am strongly considering getting a Minitech mill. Minitech talks about lifetime support of their products - even to mills that were originally sold to someone else.

I would suggest that you ask for help from Minitech.

I would ask that you post here whether or not Minitech was able to help you out.

Don