Sure, switch block 2, switch #6 is used to set the interrupt forwarding state. On (up) sends interrupts to the II and off doesn't. Note, not all II's can handle interrupts. Early IIe models and II and II+ models can't. While you are looking at the card, check switch 7 on both, on switch block 1, it should be up and switch block 2 it should be down. Phoenyx