JPS5798050A - Trouble discrimination of logic circuit device - Google Patents

Trouble discrimination of logic circuit device

Info

Publication number
JPS5798050A
JPS5798050A JP55174707A JP17470780A JPS5798050A JP S5798050 A JPS5798050 A JP S5798050A JP 55174707 A JP55174707 A JP 55174707A JP 17470780 A JP17470780 A JP 17470780A JP S5798050 A JPS5798050 A JP S5798050A
Authority
JP
Japan
Prior art keywords
trouble
operations
register
output
terminals
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
JP55174707A
Other languages
Japanese (ja)
Inventor
Hajime Seto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55174707A priority Critical patent/JPS5798050A/en
Publication of JPS5798050A publication Critical patent/JPS5798050A/en
Pending 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
    • G06F11/26—Functional testing
    • G06F11/273—Tester hardware, i.e. output processing circuits

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)
  • Tests Of Electronic Circuits (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE:To detect a trouble of a logic circuit when the output information on one output terminal is constant and to discriminate easily said trouble, and applying the information of the random pattern specified times to the plural input terminal, monitoring a change in the output information from each output terminal. CONSTITUTION:To the plural input terminals P0-Pn of a trouble discrimination device, a logic circuit device (not illustrated) is connected on its plural output terminals P'0-P'n, where the result of discrimination on a trouble is output. In the register 1 of this device, the information that is input to the terminals P0- Pn is temporarily stored, the result of logical operations is stored in a register 2, in a register 3, the result of OR operation is stored, in an AND operations circuit 4, AND operations of the stored contents of registers 1, 2 are carried out, and in an OR logical operation circuit 5, OR operations are applied to the stored contents of registers 1, 3. After the termination of these operations, OR operations between inverted values of the contents of the register 2 and these of the register 3 are carried out in an OR circuit 7, and when one of the terminals P'0-P'n is constant, it is decided as a trouble. Thus, the decision on the trouble is facilitated.
JP55174707A 1980-12-12 1980-12-12 Trouble discrimination of logic circuit device Pending JPS5798050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55174707A JPS5798050A (en) 1980-12-12 1980-12-12 Trouble discrimination of logic circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55174707A JPS5798050A (en) 1980-12-12 1980-12-12 Trouble discrimination of logic circuit device

Publications (1)

Publication Number Publication Date
JPS5798050A true JPS5798050A (en) 1982-06-18

Family

ID=15983245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55174707A Pending JPS5798050A (en) 1980-12-12 1980-12-12 Trouble discrimination of logic circuit device

Country Status (1)

Country Link
JP (1) JPS5798050A (en)

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