JPS5525112A - Self-diagnostic system - Google Patents

Self-diagnostic system

Info

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
Application number
JP9698078A
Other languages
Japanese (ja)
Inventor
Katsuhiko Kiyoo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9698078A priority Critical patent/JPS5525112A/en
Publication of JPS5525112A publication Critical patent/JPS5525112A/en
Pending legal-status Critical Current

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
JP9698078A 1978-08-09 1978-08-09 Self-diagnostic system Pending JPS5525112A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006263492A (en) * 2005-03-22 2006-10-05 Sharp Corp Air cleaner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006263492A (en) * 2005-03-22 2006-10-05 Sharp Corp Air cleaner

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