Hi all. I did a quick check in my cards stock. I guess that the simple M105 address selected is a cheap candidate to get a new life as KM11. Just remove the few parts and, to be sure there are no interconnections, cut the trace a bit after the fingers. Then solder a flat cable to the traces that are used for the KM11. ** Do not extend the length of the flat cable too long! Stray capacitance between the wires can induce a voltage in the wire next to it. I had that problem a few years ago. The thing worked nice, but after a few months it died on me and I could not figure out what went wrong at first. With the oscilloscope the problems became visible: due to crosstalk/induction between the wires, the signal voltage on some wires went negative, more than -0.6 Volts. TTL circuits really hate that! - Henk. (with a busy weekend ahead...)