JPS5696311A - Bus centralized monitoring system - Google Patents
Bus centralized monitoring systemInfo
- 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
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
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)
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)
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 |
-
1979
- 1979-12-28 JP JP54173186A patent/JPS5845050B2/en not_active Expired
Patent Citations (3)
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)
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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