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JPS57100548A - File controller - Google Patents

File controller

Info

Publication number
JPS57100548A
JPS57100548A JP55175832A JP17583280A JPS57100548A JP S57100548 A JPS57100548 A JP S57100548A JP 55175832 A JP55175832 A JP 55175832A JP 17583280 A JP17583280 A JP 17583280A JP S57100548 A JPS57100548 A JP S57100548A
Authority
JP
Japan
Prior art keywords
action
read
driver
storage device
pointer
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
JP55175832A
Other languages
Japanese (ja)
Inventor
Kenichi Kageura
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 JP55175832A priority Critical patent/JPS57100548A/en
Publication of JPS57100548A publication Critical patent/JPS57100548A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/16—Handling requests for interconnection or transfer for access to memory bus

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To reduce the time required for production of a backup file, by carrying out in parallel both the reading action of a file storage device of a side and the writing action of the other file storage device without useless reading. CONSTITUTION:With the recognition for the indication of the start for a copying action, a common control part 33 selects a subject disk driver to connect the driver to the read and write driver connection parts 37 and 38 respectively. A start command is given to both the read write control parts 34 and 35. Thus the part 34 feeds the read data to a data buffer 36 and at the same time replaces a data buffer pointer 39; and the part 35 starts the writing action at the buffer 36 by referring to the pointer 39.
JP55175832A 1980-12-15 1980-12-15 File controller Pending JPS57100548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55175832A JPS57100548A (en) 1980-12-15 1980-12-15 File controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55175832A JPS57100548A (en) 1980-12-15 1980-12-15 File controller

Publications (1)

Publication Number Publication Date
JPS57100548A true JPS57100548A (en) 1982-06-22

Family

ID=16002991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55175832A Pending JPS57100548A (en) 1980-12-15 1980-12-15 File controller

Country Status (1)

Country Link
JP (1) JPS57100548A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6093692A (en) * 1983-10-25 1985-05-25 Dainippon Printing Co Ltd Method and apparatus for copying program tape for computer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6093692A (en) * 1983-10-25 1985-05-25 Dainippon Printing Co Ltd Method and apparatus for copying program tape for computer

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