I have an Irritating Maze cart and a trackball and desperately want to play it properly but have been looking for a kit for years to no avail...

Is there any way that something can be made up to allow these to interface without the original bundled PCB... is the board just providing an analogue to digital conversion and so can this be replicated another way..?

Has anyone ever mapped the schem for it so a repro could be made..?