| 摘要 |
PURPOSE: A method for processing input and output device drivers is provided to duplex the input and output device drivers of two duplexed central processor module(CPM) boards, so as to normally maintain input/output functions when the boards are duplexed. CONSTITUTION: Central processor module(CPM) boards(100,200) are duplexed by using a data concurrent write method. If the CPM boards are initialized, high speed bus(HSB) drivers(110,210) controlling HSB communication between each CPM and slave processors identify whether the HSBs are in active states or stand-by states. If the HSB drivers are in the active states, the HSB drivers enable interrupts for the HSB communication. If the HSB drivers are in the stand-by states, the HSB drivers disable interrupts for the HSB communication. If active CPM boards are switched into stand-by states, the corresponding HSB drivers disable the interrupts for the HSB communication. If stand-by CPM boards are switched into active states, the HSB drivers enable the interrupt for the HSB communication.
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