Pete Turnbull wrote:
The user port was typically used for home-grown
digital I/O, but some
commercial hardware used it too, eg at least one mouse, some satellite
hardware, a turtle, a robot arm, and a CNC lathe controller. I used it
to interface to a PCB tester I made to test some circuit boards I made.
All of these can be hooked up with a serial port, so I'm still wondering
why today's machines are considered lacking for not having a "user port".
--
Jim Leonard (trixter at
oldskool.org)
http://www.oldskool.org/
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