| 摘要 |
PURPOSE:To continue a processing as a part of a system, even at the time of a fault of a partial device in a composite computer system, by adding newly a communication means between each computer. CONSTITUTION:Each computer system is constituted by adding communication control parts 1-3 and a bus type transmission line 17, to CPUs 7-9, main storages 4-6, channel devices 10-12, a loop type transmission line 16, and loop controllers 13-15. Each communication control part 1-3 is provided with a control use LSI 21 connected to a transmission line 17, a control part 22, a RAM 23, a ROM 24, transceivers 25, 26, and an address bus 29, a data bus 30 and a control line group 31 of each main storage 4-6, and can execute an access to memories of the devices 4-6. As a result, even at the time of a fault of one of the devices 10-15, communication between the CPUs 7-9 through the transmission line 17 is secured. |
