OK, I have some TINY core planes out of a Honeywell system.
One unit was a tape drive, the other a line printer. These
were hooked together to make an off-line print despooler. I
got it working enough to analyze the signals, and then wrote
a driver and built an interface to my S-100 Z-80 system.
So, I had a 300 LPM drum printer on an S-100 system.
All I have left of it is the core plane cards and a few
other bits.
I also have a PDP-8 core plane.
Jon