JPS57155655A - Magnetic disk controlling system - Google Patents

Magnetic disk controlling system

Info

Publication number
JPS57155655A
JPS57155655A JP4071081A JP4071081A JPS57155655A JP S57155655 A JPS57155655 A JP S57155655A JP 4071081 A JP4071081 A JP 4071081A JP 4071081 A JP4071081 A JP 4071081A JP S57155655 A JPS57155655 A JP S57155655A
Authority
JP
Japan
Prior art keywords
register
track address
contents
seek
cmp9
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
JP4071081A
Other languages
Japanese (ja)
Inventor
Yuji Inoue
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4071081A priority Critical patent/JPS57155655A/en
Publication of JPS57155655A publication Critical patent/JPS57155655A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers

Landscapes

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

Abstract

PURPOSE:To decrease the seek working time, by storing an indicated track address to the 1st register and a prescribed return track address to the 2nd register respectively and then comparing the contents of both registers with each other. CONSTITUTION:A controller 4 receives an instruction from a channel device 3 and stores an indicated track address to a register R16 to deliver the track address to a disk device 7. Then a seek action is carried out to read or write a data. When the read/write process is over, the contents of the register R16 is compared with the contents of a register R28 which stored the return track address through a comparator CMP9. When no coincidence is obtained through the comparison, a control part 5 stored the contents of the register R28 in the register R16 at the moment when a timer TM10 completes the prescribed time. Then a seek action is given to the return track address shown by the register R28, and the coincidence is checked again for the contents between both registers through the comparator CMP9. Then the part 5 waits for the next instruction to be given from the device 3.
JP4071081A 1981-03-20 1981-03-20 Magnetic disk controlling system Pending JPS57155655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4071081A JPS57155655A (en) 1981-03-20 1981-03-20 Magnetic disk controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4071081A JPS57155655A (en) 1981-03-20 1981-03-20 Magnetic disk controlling system

Publications (1)

Publication Number Publication Date
JPS57155655A true JPS57155655A (en) 1982-09-25

Family

ID=12588131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4071081A Pending JPS57155655A (en) 1981-03-20 1981-03-20 Magnetic disk controlling system

Country Status (1)

Country Link
JP (1) JPS57155655A (en)

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