User`s guide

Since the microprocessor only prefetches at most one word, one technique to
avoid unwanted triggering from unused prefetches is to add "2" to the trigger
address. The trigger condition will only be satisfied if the branch is not taken.
No activity on activity indicators
On the HP 16510A Logic Analyzer, check the fuse that allows power to
the preprocessor interface.
On other logic analyzers, check for loose cables, board connections, and
preprocessor interface connections.
Check for bent or damaged pins on the preprocessor probe.
No trace list display
If there is no trace list display, it may be that your analysis specification is not
correct for the data you want to capture, or that the trace memory is only
partially filled.
Check your analysis sequencer specification to ensure that it will
capture the events of interest.
Try stopping the analyzer; if the trace list is partially filled, this should
display the contents of trace memory.
If You Have a Problem
No activity on activity indicators
A–4 MC68306 Preprocessor