| 摘要 |
PURPOSE:To collect and analyze bus information at a remote place, by providing a communication controlling section which transmits bus information stored by a memory section to outside, and installing an analyzing section which analyzes information from outside and controls the memory section. CONSTITUTION:Bus information, such as input-output data, etc., and a bus control signal are supplied to a memory section 1 through a bus 6 and bus control signal line 10, respectively. A memory control section 2 produces a memory write signal which is to be used for storing the bus information through the bus control signal and feeds the memory write signal to the memory section 1. A communication control section 3 transmits the bus information fed through a data bus 7 from the memory section 1 to a worker at a remote place through an external bus 8. The worker analyzes the bus information and, when a special phenomenon appears, transmits control data to the control section 3 through the bus 8 and to an analyzing section 4 through a special data bus 9. The analyzing section 4 analyses the control data and controls the memory write signal by supplying a control signal to the controlling section 2. By this operation bus information can be collected at a remote place if necessary.
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