Some of the early 1990's Biesse Rover's used a CNI Unix based controller. There is a version of the software on the office PC to write the programs, then they are transferred to the machine via floppy. I understood these to be somewhat difficult, and expensive, posts when our shop was checking out MasterCAM. You could always build your own controller for it. I spoke with Gary, I think it was, at Camsoft http://www.cnccontrols.com/default.asp who assured me it could be done with his software/hardware packages. There is alot going on in some of the Biessie's. Do you have the drill banks, grooving saw, multiple router heads? Our shop has three Biesse's, the last one purchased about a year ago even had the machining C axis. We put a moulder head on it for arched mouldings, really cool!
Jim