Method for obtaining non-volatile defect log in microprocessor fault logging device and microprocessor control system

摘要

The microprocessor fault logging apparatus comprises hardware and software defects which are applied to the non-maskable interrupt input NMI of the microprocessor 1 and which generate an interrupt signal applied to the RESET input of the microprocessor 1 via the delay unit 5 And means (3, 4, 8) The NMI input stores the state of the selected system parameter in the log of the fault record in which the microprocessor 1 is stored, in the nonvolatile memory 2, where the selected parameter is stored for defect analysis each time an NMI input signal is generated. The delay in the delay unit 5 sufficiently occurs so that the selected parameter can be stored in the memory 2 before the microprocessor is reset.