JPS5525112A - Self-diagnostic system - Google Patents
Self-diagnostic systemInfo
- Publication number
- JPS5525112A JPS5525112A JP9698078A JP9698078A JPS5525112A JP S5525112 A JPS5525112 A JP S5525112A JP 9698078 A JP9698078 A JP 9698078A JP 9698078 A JP9698078 A JP 9698078A JP S5525112 A JPS5525112 A JP S5525112A
- Authority
- JP
- Japan
- Prior art keywords
- value
- bit
- memory
- unit
- log
- 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 reduce hardware required for diagnostic in a micro-program control data processor, by performing AND operation between a log-out value and mask value, bit by bit, in series and then by serially comparing the result to an expected value, bit by bit.
CONSTITUTION: Prior to diagnostic operation, an initial value as to diagnosed unit 2, and a mask value and expected value to be compared after diagnostic execution are set in a fixed region of scratch memory 3 from external unit 1. The initial value is sent to unit 2 and its result (log-out value) is stored in the fixed region of memory 3. Firstly, the mask value in memory 3 is set to ER11 by clock 24 and the log-out value in memory 3 is set to LR13 by clock 25; at the same time, SW18 is set to "1" and selector 19 is placed to the side of AND16. The bit-by-bit comparison is made serially to perform the self-diagnosis of the unit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9698078A JPS5525112A (en) | 1978-08-09 | 1978-08-09 | Self-diagnostic system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9698078A JPS5525112A (en) | 1978-08-09 | 1978-08-09 | Self-diagnostic system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5525112A true JPS5525112A (en) | 1980-02-22 |
Family
ID=14179352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9698078A Pending JPS5525112A (en) | 1978-08-09 | 1978-08-09 | Self-diagnostic system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5525112A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006263492A (en) * | 2005-03-22 | 2006-10-05 | Sharp Corp | Air cleaner |
-
1978
- 1978-08-09 JP JP9698078A patent/JPS5525112A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006263492A (en) * | 2005-03-22 | 2006-10-05 | Sharp Corp | Air cleaner |
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