[Robotgroup] Collector looking for old computers you don't want / have room for

[TomD]

Ask him if he wants a Cromatics Z-80 CPM system.
I've got a lot of the schematics in blueline form.
It was an interesting machine with a 512x512 color monitor
that has a unique design. All the geometric correction is done
with analog computing blocks. There are multipliers, adders
a square root circuit. Those apply correction to the horizontal
and vertical sweep and focus to solve for the mapping between
512x512 and a CRT spherical section for the screen.