Yes, I admit there is 3 jumpers near the VME slot in the bottom right of the board, two of them gave me errors with the ROS Chips ( oops ) and the other just gave me a knckered screen, and when I did that one I thought oops, there goes my last working Atari! but it turned out ok.
The other? - well theres a bank of switches on a red connector, which are obviously the same as the switches that can be done with the CPX module thingy ( maybe not ) but on verifying this they are set the same as the CPX always reads them, and the two you mentioned are next to the serial ports - or at least I assume - I never found anymore!
