| 摘要 |
PURPOSE:To easily find (in which CPU) an error arises at the time of resetting by finding the OR of a hard reset signal and the ready signal of the CPU and resetting by this OR output (a soft reset signal). CONSTITUTION:A control signal is transmitted by serial transmission. A reset signal combining connection and detection from the other CPU is inputted as the OR of the hard reset signal and the port signal of the CPU with respect to the CPU which currently controls the system among plural CPUs. Besides, the signal outputted from the port of the CPU outputs resetting condition until serial communication becomes possible after the reset inside of the inside of the CPU is completed. The reset of the CPU currently controlling the system is transmitted to other CPU by a break signal. Thus, the connecting condition of the system can be speedily detected and easily confirmed. |
