JPS54118747A - Interruption priority control system - Google Patents

Interruption priority control system

Info

Publication number
JPS54118747A
JPS54118747A JP2640478A JP2640478A JPS54118747A JP S54118747 A JPS54118747 A JP S54118747A JP 2640478 A JP2640478 A JP 2640478A JP 2640478 A JP2640478 A JP 2640478A JP S54118747 A JPS54118747 A JP S54118747A
Authority
JP
Japan
Prior art keywords
control unit
logic
priority
unit
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.)
Granted
Application number
JP2640478A
Other languages
Japanese (ja)
Other versions
JPS6016659B2 (en
Inventor
Tachiki Ichihashi
Shigeo Nakatsuka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2640478A priority Critical patent/JPS6016659B2/en
Publication of JPS54118747A publication Critical patent/JPS54118747A/en
Publication of JPS6016659B2 publication Critical patent/JPS6016659B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To enable the main control unit to give the equal and uniform interruption process service to each secondary control unit by varying the priority in sequence for each secondary control unit.
CONSTITUTION: Priority controlling FF14a, 14b and 14n are provided to secondary control unit 12a, 12b and 12n respectively, and these units are connected in series to form a ring counter. For instance, in case priority controlling data line 19a features logic 1, the output of logic sum gate 17a becomes logic 1 with logic product gate 7a opened. Under these conditions, unit 12a is in the highest interruption sequence. Then with transmission of one clock pulse onto line 21 from main control unit 11, the logic 1 signal on line 19a is read into FF14b and then delivered on line 19b. Thus, unit 12b features the highest priority. As a result, the highest priority shifts to unit 12b, 12i, 12n and 12a in that order with every transmission of one clock pulse.
COPYRIGHT: (C)1979,JPO&Japio
JP2640478A 1978-03-08 1978-03-08 Interrupt priority control method Expired JPS6016659B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2640478A JPS6016659B2 (en) 1978-03-08 1978-03-08 Interrupt priority control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2640478A JPS6016659B2 (en) 1978-03-08 1978-03-08 Interrupt priority control method

Publications (2)

Publication Number Publication Date
JPS54118747A true JPS54118747A (en) 1979-09-14
JPS6016659B2 JPS6016659B2 (en) 1985-04-26

Family

ID=12192607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2640478A Expired JPS6016659B2 (en) 1978-03-08 1978-03-08 Interrupt priority control method

Country Status (1)

Country Link
JP (1) JPS6016659B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60180050U (en) * 1985-04-18 1985-11-29 カシオ計算機株式会社 Common bus line occupancy control device
US5149941A (en) * 1987-06-16 1992-09-22 Canon Kabushiki Kaisha Image fixing apparatus with movable sheet member and detectors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01297361A (en) * 1989-02-20 1989-11-30 Tokico Ltd Charge of brake liquid in brake device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60180050U (en) * 1985-04-18 1985-11-29 カシオ計算機株式会社 Common bus line occupancy control device
US5149941A (en) * 1987-06-16 1992-09-22 Canon Kabushiki Kaisha Image fixing apparatus with movable sheet member and detectors

Also Published As

Publication number Publication date
JPS6016659B2 (en) 1985-04-26

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