Taken: AT 286 motherboard with mathco
julesrichardsonuk at yahoo.co.uk
Thu Oct 18 04:58:09 CDT 2007
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.
... and the Buggy and trackerball. Somewhere I've got a Grafpad too; I think
that was possibly hooked up to the User port.
I suppose in the PC (as in IBM-compatible) world things tended to get their
own ISA card (if they couldn't be driven via RS-232). IBM really missed a
trick in not making the PC's parallel port bidirectional from the start. :-(
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