JPS5652456A - Magnetic disk memory control system - Google Patents

Magnetic disk memory control system

Info

Publication number
JPS5652456A
JPS5652456A JP12677379A JP12677379A JPS5652456A JP S5652456 A JPS5652456 A JP S5652456A JP 12677379 A JP12677379 A JP 12677379A JP 12677379 A JP12677379 A JP 12677379A JP S5652456 A JPS5652456 A JP S5652456A
Authority
JP
Japan
Prior art keywords
seek
statement
magnetic disk
disk memory
cylinder address
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
JP12677379A
Other languages
Japanese (ja)
Inventor
Masahiro Kazuhara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12677379A priority Critical patent/JPS5652456A/en
Publication of JPS5652456A publication Critical patent/JPS5652456A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

PURPOSE: To realize an efficient data access by which the loss time for data access can be minimized, by executing the argorithm of a movable record reproducing head arm in accordance with a SEEK statement.
CONSTITUTION: In case two positions of the magnetic disk memory DKU3 can be used, the position side of a cylinder address which is nearest to the object cylinder address of a SEEK statement is selected. Also, in the data processing unit EDP1 side, in case the magnetic disk memory control unit DKC2 has received the SEEK statement, the position side which is unused is selected and the record reproducing head arm is activated so that it is located at a fixed cylinder address. When execution of the SEEK statement has been finished, DKC2 sends a report on release of its use to EDP1, and EDP1 sends a SEEK statement which has come to be used. At this time point, location to a fixed cylinder address is finished already.
COPYRIGHT: (C)1981,JPO&Japio
JP12677379A 1979-10-03 1979-10-03 Magnetic disk memory control system Pending JPS5652456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12677379A JPS5652456A (en) 1979-10-03 1979-10-03 Magnetic disk memory control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12677379A JPS5652456A (en) 1979-10-03 1979-10-03 Magnetic disk memory control system

Publications (1)

Publication Number Publication Date
JPS5652456A true JPS5652456A (en) 1981-05-11

Family

ID=14943565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12677379A Pending JPS5652456A (en) 1979-10-03 1979-10-03 Magnetic disk memory control system

Country Status (1)

Country Link
JP (1) JPS5652456A (en)

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