JPS5617417A - Common bus supervisory system - Google Patents
Common bus supervisory systemInfo
- Publication number
- JPS5617417A JPS5617417A JP9226179A JP9226179A JPS5617417A JP S5617417 A JPS5617417 A JP S5617417A JP 9226179 A JP9226179 A JP 9226179A JP 9226179 A JP9226179 A JP 9226179A JP S5617417 A JPS5617417 A JP S5617417A
- Authority
- JP
- Japan
- Prior art keywords
- error
- bus
- history memory
- memory
- common
- 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
- Debugging And Monitoring (AREA)
- Multi Processors (AREA)
Abstract
PURPOSE: To make efficient use of a common bus and histroy memory by holding the previous memory contents without writing the history memory while a bus error signal is sent onto the common bus.
CONSTITUTION: Once a transfer unit that writes information in history memory HM detects a parity error occurring, a bus error signal is generated on bus signal line l4. Then, history memory HM is inhibited from being written. At this time, central processor CPU reads history memory HM to know whether the error has resided on the bus or to sense the error state of an error-occurring unit by way of common buses l1 and l1', thereby performing error processing afterward. If the bus error signal is reset in sensing the error, writing history memory HM is restarted.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9226179A JPS5617417A (en) | 1979-07-20 | 1979-07-20 | Common bus supervisory system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9226179A JPS5617417A (en) | 1979-07-20 | 1979-07-20 | Common bus supervisory system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5617417A true JPS5617417A (en) | 1981-02-19 |
JPS5759569B2 JPS5759569B2 (en) | 1982-12-15 |
Family
ID=14049457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9226179A Granted JPS5617417A (en) | 1979-07-20 | 1979-07-20 | Common bus supervisory system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5617417A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0614868A (en) * | 1992-08-31 | 1994-01-25 | Olympus Optical Co Ltd | Endoscope system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62144482U (en) * | 1986-03-08 | 1987-09-11 | ||
JPH0652453U (en) * | 1991-04-12 | 1994-07-19 | 稔 西村 | High sensitivity delicate |
-
1979
- 1979-07-20 JP JP9226179A patent/JPS5617417A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0614868A (en) * | 1992-08-31 | 1994-01-25 | Olympus Optical Co Ltd | Endoscope system |
Also Published As
Publication number | Publication date |
---|---|
JPS5759569B2 (en) | 1982-12-15 |
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