The 500 is the same motherboard as a 2000 minus the Zorro 2 slots and video slot
This is true for the B2000 (A2000-CR).. If the OP has an original German A2000, then it's of A1000 heritage.
the side car slot on it however is the same as Zorro 2 digitally
It's the same as the A2000's CPU slot.
Zorro slots have a couple of signals more, that are not present in the A2000 CPU slot/A500 side expansion slot (AmigaBUS).
