COMPUTER WITH FAULT TOLERANT CAPACITY

摘要

PURPOSE: To replace faulty parts without system shutdown by minimizing a porting circuit to separate faulty parts while running the system. CONSTITUTION: When all CPUs 11 to 13 enter the interrupt state, they output the interrupt requests to all memory modules 14 and 15 by individual lines of an interrupt bus 35. When all interrupts are ported, memory modules 14 and 15 transmit the interrupt requests ported to three CPUs 11 to 13 through the bus 35. CPUS 11 to 13 synchronize these ported interrupts with a CPU interrupt signal through an inter-CPU bus 18, and interrupts are indicated to all CPUs 11 to 13 at a common point of an instruction stream.