JPS5583395A - Racing prevention system - Google Patents

Racing prevention system

Info

Publication number
JPS5583395A
JPS5583395A JP16084778A JP16084778A JPS5583395A JP S5583395 A JPS5583395 A JP S5583395A JP 16084778 A JP16084778 A JP 16084778A JP 16084778 A JP16084778 A JP 16084778A JP S5583395 A JPS5583395 A JP S5583395A
Authority
JP
Japan
Prior art keywords
processor
racing
request
buffer
circuits
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.)
Granted
Application number
JP16084778A
Other languages
Japanese (ja)
Other versions
JPS5748916B2 (en
Inventor
Kazunobu Kiuchi
Kenji Nishimihara
Tahei Suzuki
Toshinobu Egashira
Takashi Kobayashi
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
Hitachi Ltd
NEC Corp
Oki Electric Industry Co Ltd
NTT Inc
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP16084778A priority Critical patent/JPS5583395A/en
Publication of JPS5583395A publication Critical patent/JPS5583395A/en
Publication of JPS5748916B2 publication Critical patent/JPS5748916B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored program

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Multi Processors (AREA)

Abstract

PURPOSE:To prevent racing between channel units completely by providing a racing preventive flag memory and process request buffer on a sub-processor side and a request queue buffer and request selector on a main-processor side. CONSTITUTION:Channel units 1 and 2 equipped with talking circuits are provided with trunks 11 and 21 transmitting and receiving signals on talking circuits, sub- processors 12 and 22, and racing preventive flags 13 and 23 stored with racing preventive flags corresponding to circuits, in addition to buffers 14 and 24 for various process requests and interface circuits 15 and 25. Further, main processor 3 is provided with CPU31, process-request queue buffer 32, and request selector 33 and when processor 12 detects trunk 11 changing in state, flag 13 is set by a test and set function and stored in buffer 14. When CPUT31 receives a state from buffer 14, flag 23 is set via processor 22 of unit 2 and a process request from processor 22 is stopped to continue any other process than that of trunk 11.
JP16084778A 1978-12-19 1978-12-19 Racing prevention system Granted JPS5583395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16084778A JPS5583395A (en) 1978-12-19 1978-12-19 Racing prevention system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16084778A JPS5583395A (en) 1978-12-19 1978-12-19 Racing prevention system

Publications (2)

Publication Number Publication Date
JPS5583395A true JPS5583395A (en) 1980-06-23
JPS5748916B2 JPS5748916B2 (en) 1982-10-19

Family

ID=15723680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16084778A Granted JPS5583395A (en) 1978-12-19 1978-12-19 Racing prevention system

Country Status (1)

Country Link
JP (1) JPS5583395A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6331298A (en) * 1986-07-24 1988-02-09 Nec Corp Competition preventing system for multiprocessor
JPS6331297A (en) * 1986-07-24 1988-02-09 Nec Corp Competition preventing system for multiprocessor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60222052A (en) * 1984-04-18 1985-11-06 池上　喜美子 Heat generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6331298A (en) * 1986-07-24 1988-02-09 Nec Corp Competition preventing system for multiprocessor
JPS6331297A (en) * 1986-07-24 1988-02-09 Nec Corp Competition preventing system for multiprocessor

Also Published As

Publication number Publication date
JPS5748916B2 (en) 1982-10-19

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