| 摘要 |
PROBLEM TO BE SOLVED: To make a computer highly reliable and to facilitate error remediation and repair replacement in system operation. SOLUTION: A processor 1 and a system bus controller 3 are connected through a CPU bus and the system bus controller 3 and a memory device 4 are doubled and connected by a couple of system buses 13, and error detecting circuits 6, 80 and 85 which detect errors of respective buses, comparing circuits 51, 104 and 105 which compare output contents of the buses, bus switching circuits 7, 82 and 83, and mode setting circuits 100, 101 and 102 are provided in the system bus controller 3 and memory device 4. Outputs of error detecting circuits are exchanged between a couple of devices and the bus switching circuits are controlled according to the detection result of the error detecting circuit and setting contents of the mode setting circuits from the opposite side. COPYRIGHT: (C)2004,JPO |
