JPS6474471A - Diagnostic system - Google Patents
Diagnostic systemInfo
- Publication number
- JPS6474471A JPS6474471A JP62233347A JP23334787A JPS6474471A JP S6474471 A JPS6474471 A JP S6474471A JP 62233347 A JP62233347 A JP 62233347A JP 23334787 A JP23334787 A JP 23334787A JP S6474471 A JPS6474471 A JP S6474471A
- Authority
- JP
- Japan
- Prior art keywords
- driver
- inputted
- clock
- bus fight
- signals
- 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
- Tests Of Electronic Circuits (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE:To take measures to select a higher-priority signal and to preclude a bus fight completely by detecting conditions by a bus fight detecting means previously. CONSTITUTION:Two drive signals 14 and 24 supplied from a testing device 3 are branched and inputted to a NAND circuit 31 in the bus fight condition detection part 6 and when the simultaneous generation of both signals is detected, a low level is outputted to one input terminal of an AND circuit 32 in a priority selection part 7 while a clock 15 is inhibited from being inputted to the other input terminal. Its output is inputted to the clock terminal of a flip-flop 13 to stop the driver signals from being sent out to a driver 11. Therefore, the driver signal 24 is selected preferentially and outputted through a flip-flop 23 with a clock 25 to drive a driver 21. Consequently, the bus fight is precluded completely.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62233347A JPS6474471A (en) | 1987-09-17 | 1987-09-17 | Diagnostic system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62233347A JPS6474471A (en) | 1987-09-17 | 1987-09-17 | Diagnostic system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6474471A true JPS6474471A (en) | 1989-03-20 |
Family
ID=16953723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62233347A Pending JPS6474471A (en) | 1987-09-17 | 1987-09-17 | Diagnostic system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6474471A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008256253A (en) * | 2007-04-04 | 2008-10-23 | Toyota Motor Corp | Heat exchanger and manufacturing method of heat exchanger |
-
1987
- 1987-09-17 JP JP62233347A patent/JPS6474471A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008256253A (en) * | 2007-04-04 | 2008-10-23 | Toyota Motor Corp | Heat exchanger and manufacturing method of heat exchanger |
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