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JPS5776641A - Data processor - Google Patents

Data processor

Info

Publication number
JPS5776641A
JPS5776641A JP55153434A JP15343480A JPS5776641A JP S5776641 A JPS5776641 A JP S5776641A JP 55153434 A JP55153434 A JP 55153434A JP 15343480 A JP15343480 A JP 15343480A JP S5776641 A JPS5776641 A JP S5776641A
Authority
JP
Japan
Prior art keywords
shift
circuit
signal
shift register
output
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
Application number
JP55153434A
Other languages
Japanese (ja)
Other versions
JPS6117021B2 (en
Inventor
Yasuhisa Watanabe
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55153434A priority Critical patent/JPS5776641A/en
Publication of JPS5776641A publication Critical patent/JPS5776641A/en
Publication of JPS6117021B2 publication Critical patent/JPS6117021B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
    • G06F11/2236—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test CPU or processors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE:To make a diagnosis of every circuit surrounded with shift registers of one circuit block or blocks by selecting a shift path arranged for every circuit block while circuits in a data processor are sectioned into circuit blocks. CONSTITUTION:When a selection signal e2 is a (1) and selection signals e1 and e3 are (0)s, the output 120 of an AND circuit 20 is a (1) and the output hold signal of an AND circuit 26 is a (0), so that a shift register 6 holds itself in readiness for shifting operation. For this purpose, data diagnosing a slanting-line part 31 is set up in a shift-in signal (b), and a necessary number of pulses are sent out as a synchronizing signal a1, setting the diagnostic data in the shift register 6 through the intervention of a shift-in signal 113. Then, a shift mode signal (d) is held at a (0). As a result, the output of an AND circuit goes down to a (0) and in this state, a synchronizing signal a2 is supplied to a shift register 7 by one pulse, thereby diagnosing combinatorial logical circuits 9 and 10 on the basis of the diagnostic data set in the shift register 6.
JP55153434A 1980-10-31 1980-10-31 Data processor Granted JPS5776641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55153434A JPS5776641A (en) 1980-10-31 1980-10-31 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55153434A JPS5776641A (en) 1980-10-31 1980-10-31 Data processor

Publications (2)

Publication Number Publication Date
JPS5776641A true JPS5776641A (en) 1982-05-13
JPS6117021B2 JPS6117021B2 (en) 1986-05-06

Family

ID=15562429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55153434A Granted JPS5776641A (en) 1980-10-31 1980-10-31 Data processor

Country Status (1)

Country Link
JP (1) JPS5776641A (en)

Also Published As

Publication number Publication date
JPS6117021B2 (en) 1986-05-06

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