JPS5460532A - Bus checking system - Google Patents
Bus checking systemInfo
- Publication number
- JPS5460532A JPS5460532A JP12691877A JP12691877A JPS5460532A JP S5460532 A JPS5460532 A JP S5460532A JP 12691877 A JP12691877 A JP 12691877A JP 12691877 A JP12691877 A JP 12691877A JP S5460532 A JPS5460532 A JP S5460532A
- Authority
- JP
- Japan
- Prior art keywords
- ioc
- channel
- circuit
- akit
- given
- 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
Abstract
PURPOSE: To secure easy investigation for the factors of errors caus by both the software and the hardware by providing the bus check means on the bus line which is common to the input and putput control units.
CONSTITUTION: When the interruption signal is delivered to channel 1 from input/ outpout device IOC, COU gives the AKIT order to control line 4 to know which IOC the interruption is given from. Bus check circuit 8 consists of AKIT detecting circuit 10 and device and address detecting circuit 11. Circuit 10 checks whether some interruption signal has arrived from IOC when the AKIT command is given from channel 1. And the soft error signal 9 is emitted to channel 1 in case no interruption signal exists. Circuit 11 memorizes device adress DA of IOC and compares IOC with DA which is given when the data is transferred. And error signal 9 is emitted to channel 1 when no coincidence is obtained
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12691877A JPS5460532A (en) | 1977-10-21 | 1977-10-21 | Bus checking system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12691877A JPS5460532A (en) | 1977-10-21 | 1977-10-21 | Bus checking system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5460532A true JPS5460532A (en) | 1979-05-16 |
Family
ID=14947114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12691877A Pending JPS5460532A (en) | 1977-10-21 | 1977-10-21 | Bus checking system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5460532A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6020655U (en) * | 1983-07-18 | 1985-02-13 | 株式会社明電舎 | Abnormality monitoring device for asynchronous bus-coupled computer system |
-
1977
- 1977-10-21 JP JP12691877A patent/JPS5460532A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6020655U (en) * | 1983-07-18 | 1985-02-13 | 株式会社明電舎 | Abnormality monitoring device for asynchronous bus-coupled computer system |
JPH0313798Y2 (en) * | 1983-07-18 | 1991-03-28 |
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