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Patent Searching and Data


Title:
MULTICOMPUTER SYSTEM
Document Type and Number:
Japanese Patent JPS5725060
Kind Code:
A
Abstract:
PURPOSE:To prevent a malfunction and effectively prevent the contents of memory, by subdividing a memory area, deciding by a storage key whether access is available or not, and accessing, in a common memory breakdown preventive system of a multicomputer system. CONSTITUTION:A memory area of a common memory device 1 is subdivided by an optional unit, and corresponding to areas 5-8 which have been subdivided, a storage register 12 of a storage register part 10 is provided by one piece each, in this register 12 is stored the information of computers 2-4 which are capable of accessing its area, and when access has been executed to the related areas 5-8 from each computer 2-4, whether the access is available or not is decided in accordance with a storage key 15, and only when it is available, the access is executed to the common memory device 1. Accordingly, the contents of a memory are not broken down by other computer.

Inventors:
MINAMIDE SETSUO
Application Number:
JP9990380A
Publication Date:
February 09, 1982
Filing Date:
July 23, 1980
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
G06F12/16; G06F12/14; G06F15/16; G06F15/177; (IPC1-7): G06F13/00; G06F15/16