| 摘要 |
PURPOSE: A method for filtering abnormal interrupts is provided to filter abnormal interrupts generated when a processor board is dismounted in a warm reset, and to save normal data only in a backup memory. CONSTITUTION: When a system cold-starts(40), an MPU(Micro Processor Unit) initializes each unit of the system(41). A warm reset(42-48) follows the step of initializing each unit. A processor board of the system is dismounted for a warm reset(42). The MPU detects abnormal interrupts(43) and checks whether each unit is initialized(44). If not, the MPU doesn't process the abnormal interrupts and returns(45). If each unit is initialized, the MPU filters the abnormal interrupts and saves OAM&P(Operation Administration Maintenance & Provisioning) data of a current system in a backup memory(46). When the process board is mounted(47), the MUP overwrites data saved in the backup memory to a database of the current system(48). |
