On Sun, Mar 25, 2018 at 10:49 AM, Chris Elmquist via cctalk
<cctalk at classiccmp.org> wrote:
Maybe there's some relationship to the SGI dial
boxes?? I have an SGI
one but don't know anything about the IBM ones. They were built by
Danaher and Seiko and both SGI and Sun offered those models...
I have seen the same dial box, as well as the "Button Box" and
possibly the CAD puck with the crosshairs, for HP and, IIRC, Sun
systems. It's a fair bet they're all based on the same models.
"Somewhere" in my overwhelming stacks of IBM docs, I have some sort of
guide to I/O devices with pics of each. I don't believe I've ever
seen a protocol description in them, unfortunately.
j