JPS5696311A - Bus centralized monitoring system - Google Patents

Bus centralized monitoring system

Info

Publication number
JPS5696311A
JPS5696311A JP17318679A JP17318679A JPS5696311A JP S5696311 A JPS5696311 A JP S5696311A JP 17318679 A JP17318679 A JP 17318679A JP 17318679 A JP17318679 A JP 17318679A JP S5696311 A JPS5696311 A JP S5696311A
Authority
JP
Japan
Prior art keywords
bus
signal
cpu1
sequence
control part
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
JP17318679A
Other languages
Japanese (ja)
Other versions
JPS5845050B2 (en
Inventor
Shigeru Hashimoto
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 JP54173186A priority Critical patent/JPS5845050B2/en
Publication of JPS5696311A publication Critical patent/JPS5696311A/en
Publication of JPS5845050B2 publication Critical patent/JPS5845050B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the bus sequence from being blocked, by providing an centralized control part which gives use permission of the common bus to a selected bus use device and by equipping a timer means in this part.
CONSTITUTION: Main memory 3 and I/O control devices 4-1W4-n are connected to common bus C-BUS, and the bus use device such as CPU1 is connected to C-BUS also through centralized control part. When devices 4-1W4-n generate interrupt request iRQ to CPU1, CPU1 sends interrupt permission signal iAC and data service in signal DSVi for the highest-priority iRQ from control part 2. FF13 is set by signal iAC to operate counter 14. When the interrupt sequence is completed, service- out signal SRVO is sent to reset counter 14. In case that SRVO is not sent by some cause, counter 14 continues counting up to the set value and sets FF15 and outputs bus time-over signal BTOV, thereby preventing the bus sequence from being blocked.
COPYRIGHT: (C)1981,JPO&Japio
JP54173186A 1979-12-28 1979-12-28 Bus centralized monitoring system Expired JPS5845050B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54173186A JPS5845050B2 (en) 1979-12-28 1979-12-28 Bus centralized monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54173186A JPS5845050B2 (en) 1979-12-28 1979-12-28 Bus centralized monitoring system

Publications (2)

Publication Number Publication Date
JPS5696311A true JPS5696311A (en) 1981-08-04
JPS5845050B2 JPS5845050B2 (en) 1983-10-06

Family

ID=15955677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54173186A Expired JPS5845050B2 (en) 1979-12-28 1979-12-28 Bus centralized monitoring system

Country Status (1)

Country Link
JP (1) JPS5845050B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107932A (en) * 1981-12-22 1983-06-27 Fujitsu Ltd Common bus failure check system
JPS6155755U (en) * 1984-09-12 1986-04-15
CN105809952A (en) * 2016-05-09 2016-07-27 厦门蓝斯通信股份有限公司 Control method and system for avoiding road segment jams of public buses

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018357A (en) * 1973-05-10 1975-02-26
JPS535098A (en) * 1976-07-02 1978-01-18 Ibm Process for preparing silicon dioxide
JPS54129937A (en) * 1978-03-31 1979-10-08 Toshiba Corp Bus control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018357A (en) * 1973-05-10 1975-02-26
JPS535098A (en) * 1976-07-02 1978-01-18 Ibm Process for preparing silicon dioxide
JPS54129937A (en) * 1978-03-31 1979-10-08 Toshiba Corp Bus control system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107932A (en) * 1981-12-22 1983-06-27 Fujitsu Ltd Common bus failure check system
JPS6128146B2 (en) * 1981-12-22 1986-06-28 Fujitsu Ltd
JPS6155755U (en) * 1984-09-12 1986-04-15
JPH0512824Y2 (en) * 1984-09-12 1993-04-05
CN105809952A (en) * 2016-05-09 2016-07-27 厦门蓝斯通信股份有限公司 Control method and system for avoiding road segment jams of public buses

Also Published As

Publication number Publication date
JPS5845050B2 (en) 1983-10-06

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