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Apparatus and method for trace stream identification of multiple target processor events

  • US 20040133823A1
  • Filed: 12/05/2003
  • Published: 07/08/2004
  • Est. Priority Date: 12/17/2002
  • Status: Active Grant
First Claim
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1. For the testing of the operation of processing unit, a system for identifying the occurrence of a plurality of events in a processor unit, the system comprising:

  • timing trace apparatus responsive to signals from the processor unit, the timing trace apparatus generating a timing trace stream;

    program counter trace apparatus responsive to signals from the processing unit, the program counter trace apparatus generating a program counter trace stream; and

    synchronization apparatus applying periodic signals to the timing trace apparatus and to the program counter trace apparatus, the periodic signals;

    wherein the program counter trace apparatus is responsive to plurality of simultaneous event signals, the program counter trace apparatus generating multiple-event sync marker signal group identifying the occurrence of the plurality of simultaneous events and relating the event signals to the timing trace stream and the program execution.

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