JPS535944A - Multi-system computer system constituted by simultaneous access prevention system of same data block - Google Patents

Multi-system computer system constituted by simultaneous access prevention system of same data block

Info

Publication number
JPS535944A
JPS535944A JP7992276A JP7992276A JPS535944A JP S535944 A JPS535944 A JP S535944A JP 7992276 A JP7992276 A JP 7992276A JP 7992276 A JP7992276 A JP 7992276A JP S535944 A JPS535944 A JP S535944A
Authority
JP
Japan
Prior art keywords
data block
same data
simultaneous access
access prevention
constituted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7992276A
Other languages
Japanese (ja)
Inventor
Masato Yoshida
Koichi Ihara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7992276A priority Critical patent/JPS535944A/en
Publication of JPS535944A publication Critical patent/JPS535944A/en
Pending legal-status Critical Current

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  • Multi Processors (AREA)

Abstract

PURPOSE: Between processing units which use the same data block commonly, the check circuit corresponding to the data block is provided, so that the multi-system computer system can be obtained which can prevent the simultaneous access of the same data block.
COPYRIGHT: (C)1978,JPO&Japio
JP7992276A 1976-07-07 1976-07-07 Multi-system computer system constituted by simultaneous access prevention system of same data block Pending JPS535944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7992276A JPS535944A (en) 1976-07-07 1976-07-07 Multi-system computer system constituted by simultaneous access prevention system of same data block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7992276A JPS535944A (en) 1976-07-07 1976-07-07 Multi-system computer system constituted by simultaneous access prevention system of same data block

Publications (1)

Publication Number Publication Date
JPS535944A true JPS535944A (en) 1978-01-19

Family

ID=13703782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7992276A Pending JPS535944A (en) 1976-07-07 1976-07-07 Multi-system computer system constituted by simultaneous access prevention system of same data block

Country Status (1)

Country Link
JP (1) JPS535944A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59229662A (en) * 1983-06-10 1984-12-24 Hitachi Micro Comput Eng Ltd Common memory control circuit
JPS60169969A (en) * 1984-02-15 1985-09-03 Fuji Electric Co Ltd Multiprocessor system
JPS60243763A (en) * 1984-05-17 1985-12-03 Fuji Electric Co Ltd Dual port memory control circuit
JPS6149258A (en) * 1984-08-17 1986-03-11 Fanuc Ltd Input/output control system of external memory

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59229662A (en) * 1983-06-10 1984-12-24 Hitachi Micro Comput Eng Ltd Common memory control circuit
JPS60169969A (en) * 1984-02-15 1985-09-03 Fuji Electric Co Ltd Multiprocessor system
JPS60243763A (en) * 1984-05-17 1985-12-03 Fuji Electric Co Ltd Dual port memory control circuit
JPS6149258A (en) * 1984-08-17 1986-03-11 Fanuc Ltd Input/output control system of external memory

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