Apparatus and method for capturing an event or combination of events resulting in a trigger signal in a target processor

摘要

In a target processor, trigger signals that result in changes in the program execution must be identified and communicated to a host processing unit. The trigger signals are generated in response to preselected event signals. The event signals are generated by event signal generation units responsive to specified target processor conditions. Upon generation of a trigger signal, the event signals resulting in the generation of the trigger signal are stored in related locations in a storage unit. The contents of the storage unit can be transferred to the host processing unit for analysis. A related program counter address can also be transferred to the host processing unit.