JPS6415850A - Exclusive control system for device control adaptor - Google Patents

Exclusive control system for device control adaptor

Info

Publication number
JPS6415850A
JPS6415850A JP16981487A JP16981487A JPS6415850A JP S6415850 A JPS6415850 A JP S6415850A JP 16981487 A JP16981487 A JP 16981487A JP 16981487 A JP16981487 A JP 16981487A JP S6415850 A JPS6415850 A JP S6415850A
Authority
JP
Japan
Prior art keywords
request
adp11a
received
adaptors
line
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
JP16981487A
Other languages
Japanese (ja)
Inventor
Hideo Matsuura
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 JP16981487A priority Critical patent/JPS6415850A/en
Publication of JPS6415850A publication Critical patent/JPS6415850A/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

Landscapes

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

Abstract

PURPOSE:To obtain the using right of a cross-cell interface between adaptors just with use of two request lines by providing an own-system request generating means and an other-system request generating means to each of exclusive control circuits of device control adaptors of different priority orders. CONSTITUTION:The device control adaptors ADP11A and 11B are provided to the common devices 12A and 12B respectively. Then the unidirectional request lines 14A And 14B are set between both ADPs. Then the ADP11A of a higher priority order sends a request of its own system to the line 14A when no request is received from other systems and at the same time cuts off the request given from the line 14B. Then the ADP11B of a lower priority order sends a request of its own system to the request line when no request is received from other systems. When a request is received from another system, the request of its own system is stopped. Thus the ADP11A obtain the using right of a cross-call interface at the time of a device conflict. In such a way, the exclusive control of the ADP is possible with use of two request lines only.
JP16981487A 1987-07-09 1987-07-09 Exclusive control system for device control adaptor Pending JPS6415850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16981487A JPS6415850A (en) 1987-07-09 1987-07-09 Exclusive control system for device control adaptor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16981487A JPS6415850A (en) 1987-07-09 1987-07-09 Exclusive control system for device control adaptor

Publications (1)

Publication Number Publication Date
JPS6415850A true JPS6415850A (en) 1989-01-19

Family

ID=15893395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16981487A Pending JPS6415850A (en) 1987-07-09 1987-07-09 Exclusive control system for device control adaptor

Country Status (1)

Country Link
JP (1) JPS6415850A (en)

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