Oh, another favorite feature: The card had a signal
line that could activate
the degaussing circuit on the bundled AT&T monitor. I almost fell out of my
chair when I ran diagnostic software that printed something like
"Degaussing..." and then was quickly followed by a loud noise and the familiar
"twisty pix" distortion of a monitor in its degaussing cycle... scared the
crap out of me.
I beleive the HP9845C (colour monitor) had a DEGAUSS command in the BASIC
that would energise the degausing coil. And a CONVERGE command that would
display the appropriate patterns for doing convergeance adjustments. Alas
I only have a 9845B (with the enhanced mono monitor) so I cna't try them out.
-tony