| 摘要 |
AN INTEGRATED CIRCUIT (52) HAVING A PLURALITY OF FUNCTIONAL CIRCUITS (54, 56, 58, 60, 62) INTERCONNECTED VIA A FUNCTIONAL BUS (64) IS PROVIDED WITH A DIAGNOSTIC BUSMASTER CIRCUIT (66) WHICH USES BUS TRANSACTIONS ON THE FUNCTIONAL BUS (64) TO PERFORM DIAGNOSTIC OPERATIONS. THESE DIAGNOSTIC OPERATIONS CAN BE PERFORMED IN REAL TIME DURING NORMAL SPEED OPERATION OF THE INTEGRATED CIRCUIT (52) TO PRODUCE MORE ACCURATE DIAGNOSTIC RESULTS. THE DIAGNOSTIC BUS-MASTER CIRCUIT (66) IS PARTICULARLY USEFUL FOR READING DATA VALUES FROM MEMORY (58, 62) OR WRITING DATA VALUES TO MEMORY AS PART OF DIAGNOSTIC OPERATIONS.
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