| 摘要 |
<P>PROBLEM TO BE SOLVED: To debug a system-on-chip semiconductor integrated circuit by means of a small number of signals without setting a special mode, the circuit having a built-in CPU that is not necessarily operating at all times. <P>SOLUTION: This debugging method comprises a step (a) for sending a first signal to the CPU to inquire whether or not the CPU is operating; a step (b) for confirming whether not the CPU is operating according to a second signal received from the CPU; a step (c) for entering into a debugging mode if it is confirmed in the step (b) that the CPU is operating; a step (d) for causing the CPU in the debugging mode to execute a plurality of instructions in sequence that are stored in a debugging memory built in the CPU; and a step (e) for exiting the debugging mode once the execution of the plurality of instructions stored in the debugging memory is complete. <P>COPYRIGHT: (C)2007,JPO&INPIT |
