MONITORING METHOD OF PROGRAM CONTROL DEVICE

摘要

PURPOSE: To unforcedly monitor the operation in real time without affecting the normal operation of a computer system. CONSTITUTION: A monitoring device is provided with a program controllable event extraction filter 18 for discriminating the arrival of prescribed signals like memory address selection to the signal bus of the program controller of a CD player or the like. At the time of the detection of an event, two or three continuous passing signals are written through a buffer 20 to a storage device 14 and processed in an internal processor 10 or sent through a bidirectional communication link 16 to a host device and appropriate data processing algorithm is executed. The monitoring device is used for the unforced debugging of the operating system of the program controller.