G - Physics
06
F
340/71
G06F 11/30 (2006.01) G06F 11/14 (2006.01) G06F 11/20 (2006.01)
Patent
CA 1143026
ABSTRACT OF THE DISCLOSURE A computer system has two or more computer modules, each including an individual computer, a coupling memory and a working memory. The modules can be coupled to a system bus comprising a control and address bus and a data bus. Access is obtained to the coupling memory either from the system bus or from the individual computer by switching techniques, and only the individual computer has access to its working memory. The system bus can be coupled to a control computer and a safeguarding memory, to which the control computer has access over the system bus, and a further memory, to which the control computer also has access, are provided. The control computer, the further memory and part of the existing modules are employed to process the user's program, and a monitoring phase is inserted at regular intervals in which all the individual computers are checked for functional capacity by test programs stored in the working memories of the modules. The fact that defec- tive modules are not found is stored in the safeguarding memory and normal processing continues. If one or more defective modules are recognized, the same are replaced by other modules not used for processing the user's program and the individual function of the module replaced is loaded from the further memory which stores the entire user program into the replacement module before processing continues with the last safeguarded intermediate results stored in the safeguarding memory.
311096
Fetherstonhaugh & Co.
Siemens Akiengesellschaft
LandOfFree
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