| 摘要 |
A method for debugging an electronic product using the internal I/O port and related apparatus uses an in-circuit emulator (ICE) and a switching means. The ICE is permanently installed in an electronic product and electronically connected to the internal input and output (I/O) ports and the processor in the electronic product. The switching means is used to switch the processor from the normal operation mode to the debug mode, enabling the ICE processor to take over control. A computer is connected to the electronic product through the internal I/O port. Through a special debug program executed from the computer, the switching means enables the ICE to carrying out the debugging/testing procedure or remote debugging, downloading or updating firm-ware. This method obviates the precarious connection to an external ICE or the designing of a special interface card for interconnecting the ICE.
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