Competition!!! Find That controller!! Greyhound GC30/40

Hi All -

Welcome to the first of many posts where I try to decipher what components I have or need to get my CNC's working.

The first challenge - Find that controller! I have done the obligatory google search with literally no hits so I am hoping you can help. I have rebuilt the machine and want to get Mach3 sorted out so I can play with it - but I am a bit in the dark with the Mach3 Setup without knowing what pins do what. Your challenge - find the controller and tell me WTF to do with it.

The only identifying features are -

Greyhound controller
GC30/40
080902

Attachment 9394

Attachment 9395

I have included a pic of the machine too just so you can see why I want it running!! Winners of the competition will win a Double Decker chocolate bar and a Parker Pen delivered to their door.

Thanks in advance (I hope)

Chris

Attachment 9396

Attachment 9397