All my program does is strobe the DS1232. Everything is set up correctly for the PSD as this code works fine on other boards with the same configuration. The toggling of the INT1 pin is being done by the processor - I ripped the leg off to make doubly sure.

The address/data lines reset to the same state at the same time the int1 pin toggles, so I'm not sure which is the problem.

Anyway, time to start ripping off components :)