| 摘要 |
PROBLEM TO BE SOLVED: To perform a remote debugging to a built-in system on which a CPU provided with a debugging function like JTAG is mounted. SOLUTION: A debugging device is provided with a JTAG interface circuit connected to a target board, a GUI control part by which a user indicates insertion of a new instruction, an insertion instruction management table in which the address of the insertion destination, an original instruction, and the insertion instruction are preserved, and a JTAG interface control part which reads out a corresponding insertion instruction from the insertion instruction management table to load it to a target device in response to arrival at a pertinent address as a result of successive execution of a program on the target board.
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