JPS643757A - Magnetic disk control device - Google Patents

Magnetic disk control device

Info

Publication number
JPS643757A
JPS643757A JP62158856A JP15885687A JPS643757A JP S643757 A JPS643757 A JP S643757A JP 62158856 A JP62158856 A JP 62158856A JP 15885687 A JP15885687 A JP 15885687A JP S643757 A JPS643757 A JP S643757A
Authority
JP
Japan
Prior art keywords
data
data block
designated
section
block
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
JP62158856A
Other languages
Japanese (ja)
Inventor
Yoshiro Shimauchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP62158856A priority Critical patent/JPS643757A/en
Publication of JPS643757A publication Critical patent/JPS643757A/en
Pending legal-status Critical Current

Links

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE:To contrive to reduce the data access time by using a control means so as to restrict the rewrite of a data block discriminated to be a designated data block by means of a discrimination means with the data block written in a data storage means. CONSTITUTION:A designation data block instruction analysis section 1 analyzes a designated data block instruction and designated data block information is stored in an information storage section 2. Then an analysis data of an input/ output instruction from an input/output instruction analysis section 3 is discriminated as to whether the block corresponds to the designated data block of the storage section 2 by a discrimination section 4. When it is discriminated to be correspondent thereto, an instruction execution section 5 stores the result of discrimination to a storage section 8. When a data in a cache 7 is rewritten, the rewrite of the data of the designated data block is restricted based on the information in the storage section 8 to rewrite the other data. Since the data block designated in advance among the data stored in the cache 7 is not rewritten, the access time of the data is reduced.
JP62158856A 1987-06-26 1987-06-26 Magnetic disk control device Pending JPS643757A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62158856A JPS643757A (en) 1987-06-26 1987-06-26 Magnetic disk control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62158856A JPS643757A (en) 1987-06-26 1987-06-26 Magnetic disk control device

Publications (1)

Publication Number Publication Date
JPS643757A true JPS643757A (en) 1989-01-09

Family

ID=15680897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62158856A Pending JPS643757A (en) 1987-06-26 1987-06-26 Magnetic disk control device

Country Status (1)

Country Link
JP (1) JPS643757A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110703984A (en) * 2018-07-09 2020-01-17 横河电机株式会社 Data collection system and data collection method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110703984A (en) * 2018-07-09 2020-01-17 横河电机株式会社 Data collection system and data collection method
CN110703984B (en) * 2018-07-09 2022-11-01 横河电机株式会社 Data collection system and data collection method

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