JPS5258432A - Common bus control circuit - Google Patents

Common bus control circuit

Info

Publication number
JPS5258432A
JPS5258432A JP13532675A JP13532675A JPS5258432A JP S5258432 A JPS5258432 A JP S5258432A JP 13532675 A JP13532675 A JP 13532675A JP 13532675 A JP13532675 A JP 13532675A JP S5258432 A JPS5258432 A JP S5258432A
Authority
JP
Japan
Prior art keywords
bus
control circuit
common bus
bus control
providing
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
JP13532675A
Other languages
Japanese (ja)
Other versions
JPS594733B2 (en
Inventor
Norio Ishii
Kenichi Ishii
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 JP13532675A priority Critical patent/JPS594733B2/en
Publication of JPS5258432A publication Critical patent/JPS5258432A/en
Publication of JPS594733B2 publication Critical patent/JPS594733B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Multi Processors (AREA)
  • Bus Control (AREA)

Abstract

PURPOSE: To make higher the memory usage efficiency by providing the bus occupying bit in bus commands, and to guarantee the bus usage right with a constant rate for other requesting devices within a unit time by providing the bus cycle occupying counter.
COPYRIGHT: (C)1977,JPO&Japio
JP13532675A 1975-11-10 1975-11-10 Kyoutsuba Seigiyo Cairo Expired JPS594733B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13532675A JPS594733B2 (en) 1975-11-10 1975-11-10 Kyoutsuba Seigiyo Cairo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13532675A JPS594733B2 (en) 1975-11-10 1975-11-10 Kyoutsuba Seigiyo Cairo

Publications (2)

Publication Number Publication Date
JPS5258432A true JPS5258432A (en) 1977-05-13
JPS594733B2 JPS594733B2 (en) 1984-01-31

Family

ID=15149135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13532675A Expired JPS594733B2 (en) 1975-11-10 1975-11-10 Kyoutsuba Seigiyo Cairo

Country Status (1)

Country Link
JP (1) JPS594733B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58109951A (en) * 1981-12-17 1983-06-30 ハネウエル・インフオメ−シヨン・システムズ・インコ−ポレ−テツド Stoppage device for memory controller with interleave queuing unit
JPS58222363A (en) * 1982-06-21 1983-12-24 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Distributor for common memory
JPS6095666A (en) * 1983-10-28 1985-05-29 Fujitsu Ltd Interface controlling method
JPS60112857U (en) * 1983-12-29 1985-07-31 新明和工業株式会社 Data transfer circuit between microprocessors
JPS60144850A (en) * 1983-09-22 1985-07-31 デイジタル　イクイプメント　コ−ポレ−シヨン Retry mechanism for releasing control of communication path in digital computer system
JPS60151769A (en) * 1984-01-19 1985-08-09 Fujitsu Ltd Bus controlling system
JPS621054A (en) * 1985-06-13 1987-01-07 Fujitsu Ltd Bus control system
JPS6289159A (en) * 1985-10-11 1987-04-23 サン・マイクロシステムズ・インコ−ポレ−テツド Method and apparatus for allotting access to data processingresource

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58109951A (en) * 1981-12-17 1983-06-30 ハネウエル・インフオメ−シヨン・システムズ・インコ−ポレ−テツド Stoppage device for memory controller with interleave queuing unit
JPH0233184B2 (en) * 1981-12-17 1990-07-25 Haneiueru Infuoomeishon Shisutemusu Inc
JPS58222363A (en) * 1982-06-21 1983-12-24 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Distributor for common memory
JPS6134182B2 (en) * 1982-06-21 1986-08-06 Intaanashonaru Bijinesu Mashiinzu Corp
JPS60144850A (en) * 1983-09-22 1985-07-31 デイジタル　イクイプメント　コ−ポレ−シヨン Retry mechanism for releasing control of communication path in digital computer system
JPH0246974B2 (en) * 1983-09-22 1990-10-18 Digital Equipment Corp
JPS6095666A (en) * 1983-10-28 1985-05-29 Fujitsu Ltd Interface controlling method
JPS60112857U (en) * 1983-12-29 1985-07-31 新明和工業株式会社 Data transfer circuit between microprocessors
JPS60151769A (en) * 1984-01-19 1985-08-09 Fujitsu Ltd Bus controlling system
JPS621054A (en) * 1985-06-13 1987-01-07 Fujitsu Ltd Bus control system
JPH0462097B2 (en) * 1985-06-13 1992-10-05 Fujitsu Ltd
JPS6289159A (en) * 1985-10-11 1987-04-23 サン・マイクロシステムズ・インコ−ポレ−テツド Method and apparatus for allotting access to data processingresource

Also Published As

Publication number Publication date
JPS594733B2 (en) 1984-01-31

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