JPS55127651A - Fault recognition system of multiprocessor system - Google Patents
Fault recognition system of multiprocessor systemInfo
- Publication number
- JPS55127651A JPS55127651A JP3337779A JP3337779A JPS55127651A JP S55127651 A JPS55127651 A JP S55127651A JP 3337779 A JP3337779 A JP 3337779A JP 3337779 A JP3337779 A JP 3337779A JP S55127651 A JPS55127651 A JP S55127651A
- Authority
- JP
- Japan
- Prior art keywords
- common bus
- signal line
- fault
- bus
- processors
- 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
Landscapes
- Hardware Redundancy (AREA)
- Multi Processors (AREA)
Abstract
PURPOSE: To recognize the fault of another processor by minimizing the addition of hardware while lightening a load on a common bus in terms of software, by providing a fault discriminating circuit on the common bus.
CONSTITUTION: Processors 11W1n are connected to common bus A, to which fault discriminating circuit 9 is connected which detects and discriminates faluts of processors 11W1n, and state change communication signal line A5 is further added as a signal line of common bus A, in addition to signal lines A1WA4. Then, circuit 9, disconnected logically from common bus A under normal condition, is started when a state change communication signal is inputted via signal line A5. After bus occupation control is exercised via signal line A4, a bus service permission is obtained and signal line A5 of common bus A is used to send fault information in time- division mode, thereby enabling respective processors 11W1n to grasp the state of the system by the fault information.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54033377A JPS5842491B2 (en) | 1979-03-23 | 1979-03-23 | Fault recognition method in multiprocessor system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54033377A JPS5842491B2 (en) | 1979-03-23 | 1979-03-23 | Fault recognition method in multiprocessor system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55127651A true JPS55127651A (en) | 1980-10-02 |
JPS5842491B2 JPS5842491B2 (en) | 1983-09-20 |
Family
ID=12384891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54033377A Expired JPS5842491B2 (en) | 1979-03-23 | 1979-03-23 | Fault recognition method in multiprocessor system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5842491B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57168318A (en) * | 1981-04-10 | 1982-10-16 | Hitachi Ltd | Data transmitting device |
JPS5822469A (en) * | 1981-08-04 | 1983-02-09 | Taisei Corp | Central monitoring controller |
-
1979
- 1979-03-23 JP JP54033377A patent/JPS5842491B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57168318A (en) * | 1981-04-10 | 1982-10-16 | Hitachi Ltd | Data transmitting device |
JPS6232517B2 (en) * | 1981-04-10 | 1987-07-15 | Hitachi Seisakusho Kk | |
JPS5822469A (en) * | 1981-08-04 | 1983-02-09 | Taisei Corp | Central monitoring controller |
Also Published As
Publication number | Publication date |
---|---|
JPS5842491B2 (en) | 1983-09-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57164636A (en) | Control method for transmission system | |
JPS57174701A (en) | Decentralized controlling system | |
JPS57105023A (en) | Data transfer system | |
JPS5636709A (en) | Numerical control system | |
JPS5672752A (en) | Controller for occupation of common bus line | |
JPS55127651A (en) | Fault recognition system of multiprocessor system | |
JPS5622160A (en) | Data processing system having additional processor | |
JPS5680722A (en) | Interprocessor control system | |
JPS5523561A (en) | Micro computer system | |
JPS5635233A (en) | Fault detecting system for bus line | |
JPS54126436A (en) | Additional processing unit connection system | |
JPS5672753A (en) | Selective processor for occupation of common bus line | |
JPS54136144A (en) | Shared input/output bus control unit | |
JPS55153021A (en) | Data transfer system of multiprocessor system | |
JPS5518725A (en) | Information control system | |
JPS5536830A (en) | Multiprocessor control system of copier | |
JPS54133859A (en) | Backing-up method of electronic computer system | |
JPS57212849A (en) | Polling transmission system | |
JPS5652431A (en) | Bus request control system | |
JPS57166623A (en) | Channel device | |
JPS5549725A (en) | Input/output bus fault detection processing circuit | |
JPS5715545A (en) | Line switching device | |
JPS55129850A (en) | Duplex system for multidata processor | |
JPS5599628A (en) | Bus connection control system for data process system | |
JPS5617420A (en) | Information processing system |