I have a couple of "Eclipse" mice which have a switch which enable them to work on either an Amiga or Atari ST. I believe they only switched or reversed one connector.
If what you say is true, that would mean they'd also be able to work on a multiple number of Commodore machines. I was under the impression that the 16-bit machines funcioned differently than the 8-bit machines. Having tried an 8-bit Track-Ball on an ST I found it's
speed of movement was very slow. There must also be another connection line which plugs into a slower interupt-based DMC.
Lawrence