JPS5553722A - Priority control system - Google Patents

Priority control system

Info

Publication number
JPS5553722A
JPS5553722A JP12758478A JP12758478A JPS5553722A JP S5553722 A JPS5553722 A JP S5553722A JP 12758478 A JP12758478 A JP 12758478A JP 12758478 A JP12758478 A JP 12758478A JP S5553722 A JPS5553722 A JP S5553722A
Authority
JP
Japan
Prior art keywords
groups
priority
bus
peripheral
unit
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
JP12758478A
Other languages
Japanese (ja)
Inventor
Yoshihiko Yamagami
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12758478A priority Critical patent/JPS5553722A/en
Publication of JPS5553722A publication Critical patent/JPS5553722A/en
Pending legal-status Critical Current

Links

Landscapes

  • Bus Control (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE: To shorten the queuing time to the peripheral unit featuring a low priority by dividing plural number of peripheral units into several groups and then setting up the priority between the peripheral units within the groups as well as between the groups.
CONSTITUTION: Peripheral units 103, 1032W1034 plus 1035 and 1036 form 1st, 2nd and 3rd groups G1, G2 and G3 respectively. And secondary priority control parts 1041 and 1042 are provided in correspondence to G2 and G3 including several peripheral units, and furthermore primary priority control part 105 is provided to give the using permission of input/output bus 102 to the unit having the highest priority for the using request of bus 102 which is sent out from parts 1041 and 1042 plus unit 1031. Accordingly, if G2 or G3 is given the using permission of bus 102, control parts 1041 and 1042 corresponding to those groups give the using permission of bus 102 to peripheral unit 103i having the highest priority among units 1032 and 1034 which are under the control of the control parts.
COPYRIGHT: (C)1980,JPO&Japio
JP12758478A 1978-10-17 1978-10-17 Priority control system Pending JPS5553722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12758478A JPS5553722A (en) 1978-10-17 1978-10-17 Priority control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12758478A JPS5553722A (en) 1978-10-17 1978-10-17 Priority control system

Publications (1)

Publication Number Publication Date
JPS5553722A true JPS5553722A (en) 1980-04-19

Family

ID=14963674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12758478A Pending JPS5553722A (en) 1978-10-17 1978-10-17 Priority control system

Country Status (1)

Country Link
JP (1) JPS5553722A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139255A (en) * 1981-11-13 1983-08-18 イング・チイ・オリベツチ・アンド・チイ・エス・ピ−・ア Data processing system
JPS59231966A (en) * 1983-06-14 1984-12-26 Tamura Electric Works Ltd Processing control system of public telephone set
JPS6016756A (en) * 1984-05-31 1985-01-28 Tamura Electric Works Ltd Processing control system of device
JPS61182158A (en) * 1985-02-07 1986-08-14 Fujitsu Ltd Common bus occupying system
JPH0496165A (en) * 1990-08-08 1992-03-27 Matsushita Electric Ind Co Ltd System bus arbitrator
JPH05128056A (en) * 1991-10-30 1993-05-25 Oki Electric Ind Co Ltd Priority encoding circuit
US5805836A (en) * 1996-12-10 1998-09-08 International Business Machines Corporation Method and apparatus for equalizing grants of a data bus to primary and secondary devices
US6954844B2 (en) 1991-07-08 2005-10-11 Seiko Epson Corporation Microprocessor architecture capable of supporting multiple heterogeneous processors
JP2008046997A (en) * 2006-08-18 2008-02-28 Fujitsu Ltd Arbitration circuit, crossbar, request selection method, and information processor
JP2014035549A (en) * 2012-08-07 2014-02-24 Ricoh Co Ltd Bus control device, image processing apparatus, and bus control method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50159629A (en) * 1974-06-13 1975-12-24
JPS5210642A (en) * 1975-06-23 1977-01-27 Nec Corp Offering analysis device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50159629A (en) * 1974-06-13 1975-12-24
JPS5210642A (en) * 1975-06-23 1977-01-27 Nec Corp Offering analysis device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139255A (en) * 1981-11-13 1983-08-18 イング・チイ・オリベツチ・アンド・チイ・エス・ピ−・ア Data processing system
JPS59231966A (en) * 1983-06-14 1984-12-26 Tamura Electric Works Ltd Processing control system of public telephone set
JPH0472429B2 (en) * 1983-06-14 1992-11-18 Tamura Electric Works Ltd
JPS6016756A (en) * 1984-05-31 1985-01-28 Tamura Electric Works Ltd Processing control system of device
JPS61182158A (en) * 1985-02-07 1986-08-14 Fujitsu Ltd Common bus occupying system
JPH0496165A (en) * 1990-08-08 1992-03-27 Matsushita Electric Ind Co Ltd System bus arbitrator
US6954844B2 (en) 1991-07-08 2005-10-11 Seiko Epson Corporation Microprocessor architecture capable of supporting multiple heterogeneous processors
US7657712B2 (en) 1991-07-08 2010-02-02 Seiko Epson Corporation Microprocessor architecture capable of supporting multiple heterogeneous processors
JPH05128056A (en) * 1991-10-30 1993-05-25 Oki Electric Ind Co Ltd Priority encoding circuit
US5805836A (en) * 1996-12-10 1998-09-08 International Business Machines Corporation Method and apparatus for equalizing grants of a data bus to primary and secondary devices
JP2008046997A (en) * 2006-08-18 2008-02-28 Fujitsu Ltd Arbitration circuit, crossbar, request selection method, and information processor
JP2014035549A (en) * 2012-08-07 2014-02-24 Ricoh Co Ltd Bus control device, image processing apparatus, and bus control method

Similar Documents

Publication Publication Date Title
JPS5553722A (en) Priority control system
JPS5672752A (en) Controller for occupation of common bus line
JPS5593235A (en) Integrated circuit
JPS55118147A (en) Program addition/correction system
JPS5337A (en) Control system for input/output unit
JPS53112625A (en) Bus occupation control system
JPS55140923A (en) Information processing system
JPS56121168A (en) Common resource control system of multiple central processing unit system etc
JPS5582330A (en) Common bus control unit
JPS5227346A (en) Multiplexer
JPS53142137A (en) Memory control unit
JPS5372539A (en) Interface control system
JPS53139443A (en) Circuit control system
JPS5315723A (en) Priority selection circuit
JPS5414634A (en) Information delivery system
JPS5633736A (en) Simulation system for virtual computer
JPS5432232A (en) Check system for memory unit
JPS54114935A (en) Bus scramble circuit
JPS5714934A (en) Input/output channel
JPS54121031A (en) Information processor
JPS52115046A (en) Elevator group control system
JPS5342638A (en) Control system of data gathering equipment
JPS5394839A (en) Input/output control unit
JPS5361936A (en) Control memory unit
JPS5430436A (en) System of distributing running of system