"DoN. Nichols" writes:

No one here has ever played with any Data General computers? How
about Prime? National Semiconductor? Metrodata? Intel Multibus? How
about VME/VXI?

The first device I ever interfaced to a computer was a "mobile" robot
chassis to a DCC 116 (DG Nova clone). I put "mobile" in quotes because
I learned important lessons about torque requirements from that project.

The second was a TV camera (vidicon!) to UNIBUS.