JPS55920A - Diagnostic system for input-output device - Google Patents
Diagnostic system for input-output deviceInfo
- Publication number
- JPS55920A JPS55920A JP7316178A JP7316178A JPS55920A JP S55920 A JPS55920 A JP S55920A JP 7316178 A JP7316178 A JP 7316178A JP 7316178 A JP7316178 A JP 7316178A JP S55920 A JPS55920 A JP S55920A
- Authority
- JP
- Japan
- Prior art keywords
- control part
- fault
- decision
- write data
- input
- 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
Links
Landscapes
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE: To obtain a diagnostic system for input-output devices which can make a decision on whether a control part for I/Os or device part gets wrong, by providing a gate method to the control part.
CONSTITUTION: When a fault is supposed to occur inside of I/Oll, diagnostic mode assignment D is received from CPU. As a result, gate method 21 provided newly inside control part 12 operates to break write data bus 14. Then, control part 12 becomes capable of operating without reference to device part 11. Therefore, write data when the fault of device 11 is induced is outputted from write data generator 22 and applied to check part 23. If the data has an error itself here, it is decided that the fault of device 11 is in control part 12, thereby sending error signal E1. When the data has no error, a decision that it is in device part 13 is made and error signal E2 is sent. In this way, a decision on the fault point is made in a diagnostic mode and also in a write mode.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7316178A JPS55920A (en) | 1978-06-19 | 1978-06-19 | Diagnostic system for input-output device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7316178A JPS55920A (en) | 1978-06-19 | 1978-06-19 | Diagnostic system for input-output device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55920A true JPS55920A (en) | 1980-01-07 |
Family
ID=13510160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7316178A Pending JPS55920A (en) | 1978-06-19 | 1978-06-19 | Diagnostic system for input-output device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55920A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669838A (en) * | 1984-12-28 | 1987-06-02 | Infoquest Corporation | Roll film document image storage and retrieval apparatus and system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5285436A (en) * | 1976-01-09 | 1977-07-15 | Nec Corp | Data channel device |
-
1978
- 1978-06-19 JP JP7316178A patent/JPS55920A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5285436A (en) * | 1976-01-09 | 1977-07-15 | Nec Corp | Data channel device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669838A (en) * | 1984-12-28 | 1987-06-02 | Infoquest Corporation | Roll film document image storage and retrieval apparatus and system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR890008704A (en) | Communication control method | |
JPS55920A (en) | Diagnostic system for input-output device | |
JPS5372541A (en) | Interruption control system | |
JPS5640901A (en) | Backup method of process control | |
JPS522249A (en) | Data processing unit | |
JPS5693496A (en) | Fault detection system of electronic exchange | |
KR890009116A (en) | Data communication system | |
JPS53149739A (en) | Computer system | |
JPS5373934A (en) | Data exchange control system | |
JPS5340A (en) | Fault processing system for data processing unit | |
JPS54105937A (en) | Monitor system for electronic computer system | |
JPS53148248A (en) | Doubling system of comparator circuit | |
JPS5538630A (en) | Memory diagnostic system of information processing system | |
JPS5572245A (en) | Data transmission system for crt display unit | |
JPS5616365A (en) | Restart processing system | |
JPS5580170A (en) | Duplex computer system | |
JPS5362913A (en) | Self-diagnosis system for transmission device | |
JPS5491156A (en) | Data processing system | |
JPS5682955A (en) | Multiple computer system | |
JPS52141144A (en) | Data input unit | |
JPS53114636A (en) | Communication line control method and its unit | |
JPS5422138A (en) | Operation monitor system for electronic computer system | |
JPS559224A (en) | Automatic diagnosis method for dispersion type bus control system | |
JPS58100594A (en) | Remote output suppression device for controller | |
JPS57212849A (en) | Polling transmission system |