US Patent 7707459 Embedded systems debugging

The invention relates to a data processing system comprising a central processing unit, a first memory coupled to the central processing unit for storing variable data values, an eventing engine coupled to the central processing unit and the memory to monitor in real-time at least one of the variable data values and determine the occurrence of an event based on the at least one of the variable data values, and a debug module coupled to the central processing unit and to the eventing engine for receiving the at least one of the variable data values in real time to conduct a real-time debugging of the program.