I just bought a set of the Suncom Party Quiz controllers/interface/software. I noticed on the box it says only 2 of the 4 controllers work on the //c. It plugs into the joystick port.
Is the limitation on the number of controllers due to the fact on the //c the port is shared with the mouse? As opposed to the IIe that had a seperate 9pin port for the mouse? It looks like for the II/II+ it also has the dip style game connector, probably wired in parallel to the 9pin connector that run to the interface box.
Other than a scan of the manual, I haven't seen much info on these controllers or the interface. If there is enough interest, I would be willing to reverse engineer them and provide schematics in case anyone would like to make their own controllers and interface.