JPS56159751A - Magnetic disk control system - Google Patents

Magnetic disk control system

Info

Publication number
JPS56159751A
JPS56159751A JP6332180A JP6332180A JPS56159751A JP S56159751 A JPS56159751 A JP S56159751A JP 6332180 A JP6332180 A JP 6332180A JP 6332180 A JP6332180 A JP 6332180A JP S56159751 A JPS56159751 A JP S56159751A
Authority
JP
Japan
Prior art keywords
cpu10
magnetic disk
processor
switch
control
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
JP6332180A
Other languages
Japanese (ja)
Inventor
Yoshinori Watanabe
Haruki Hayashi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6332180A priority Critical patent/JPS56159751A/en
Publication of JPS56159751A publication Critical patent/JPS56159751A/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
    • G06F13/10—Program control for peripheral devices
    • G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
    • G06F13/122—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware performs an I/O function other than control of data transfer

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To improve the reliability of a system by providing processors which control magnetic disk devices, and by accessing a central processor by connecting a control register to each processor via a switch. CONSTITUTION:A central processor CPU10 is connected to magnetic disk devices 16-1-16-n via a magnetic disk controller 24, which consists of two processors 26 and 28 and a processor change-over switch 38. The processor 26 discriminates the presence of an interruption to the CPU10 and actuation from the CPU10 at any time and, when actuated, checks whether a front end 33 is used by its own system; when another system is using it, a channel busy signal is sent to the CPU10 and when not, the switch 38 is placed at the side of its own system to make contents of a group of control registers of the front end 33 stand by in a storage area 34b for other systems. Then, the contents standing by in an area 34a for its own system are set in a group of control registers and processing is performed corresponding to a command from the CPU10.
JP6332180A 1980-05-15 1980-05-15 Magnetic disk control system Pending JPS56159751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6332180A JPS56159751A (en) 1980-05-15 1980-05-15 Magnetic disk control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6332180A JPS56159751A (en) 1980-05-15 1980-05-15 Magnetic disk control system

Publications (1)

Publication Number Publication Date
JPS56159751A true JPS56159751A (en) 1981-12-09

Family

ID=13225878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6332180A Pending JPS56159751A (en) 1980-05-15 1980-05-15 Magnetic disk control system

Country Status (1)

Country Link
JP (1) JPS56159751A (en)

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