JPS5725050A - Diagnostic system for logical operating circuit - Google Patents

Diagnostic system for logical operating circuit

Info

Publication number
JPS5725050A
JPS5725050A JP10102680A JP10102680A JPS5725050A JP S5725050 A JPS5725050 A JP S5725050A JP 10102680 A JP10102680 A JP 10102680A JP 10102680 A JP10102680 A JP 10102680A JP S5725050 A JPS5725050 A JP S5725050A
Authority
JP
Japan
Prior art keywords
data
input data
circuit
output
operating circuit
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
JP10102680A
Other languages
Japanese (ja)
Inventor
Takemi Arita
Kenji Miyayasu
Hiroaki Sato
Tetsuhiro Nomura
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
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Nippon Telegraph and Telephone 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 Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP10102680A priority Critical patent/JPS5725050A/en
Publication of JPS5725050A publication Critical patent/JPS5725050A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/22Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing

Abstract

09 PURPOSE:To diagnose a logical operating circuit by a simple constitution, by providing a means for collating a read-out data of an ROM which is accessed by making an output data of the logical operating circuit an address, with an input data of the operating circuit. CONSTITUTION:An input data is provided from (m) pieces of input data lines 2 of a logical operating circuit 1, and output data corresponding to an input data pattern appears in (n) pieces of output data lines 3. An ROM4 is accessed by making an output data an address, a read-out output of l bits is obtained, and is provided to a collating circuit 7. Also, an input data is held temporarily by a register 6, is provided to the collating circuit 7, and is collated with a read-out data of the ROM4. If a fault occurs in the circuit 1, the output data comes not to correspond to a pattern of the input data, a data which has been read out from the ROM4 does not correspond to a pattern of the input data either, and the result becomes a collating dissidence. In accordance with the contents of dissidence, an FF8 is set, a light emission diode 9 is emitted by its set output, and the kind of fault or a faulty place of the circuit 1 is displayed.
JP10102680A 1980-07-23 1980-07-23 Diagnostic system for logical operating circuit Pending JPS5725050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10102680A JPS5725050A (en) 1980-07-23 1980-07-23 Diagnostic system for logical operating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10102680A JPS5725050A (en) 1980-07-23 1980-07-23 Diagnostic system for logical operating circuit

Publications (1)

Publication Number Publication Date
JPS5725050A true JPS5725050A (en) 1982-02-09

Family

ID=14289674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10102680A Pending JPS5725050A (en) 1980-07-23 1980-07-23 Diagnostic system for logical operating circuit

Country Status (1)

Country Link
JP (1) JPS5725050A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62224837A (en) * 1986-03-26 1987-10-02 Nec Corp Information processor
US5430763A (en) * 1991-11-25 1995-07-04 Matsushita Electric Industrial Co., Ltd. Frequency stabilizing circuit used for a pulse modulator for an image signal including a synchronous signal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113543A (en) * 1974-07-25 1976-02-03 Fujitsu Ltd
JPS5495141A (en) * 1978-01-13 1979-07-27 Mitsubishi Electric Corp Fault detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113543A (en) * 1974-07-25 1976-02-03 Fujitsu Ltd
JPS5495141A (en) * 1978-01-13 1979-07-27 Mitsubishi Electric Corp Fault detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62224837A (en) * 1986-03-26 1987-10-02 Nec Corp Information processor
US5430763A (en) * 1991-11-25 1995-07-04 Matsushita Electric Industrial Co., Ltd. Frequency stabilizing circuit used for a pulse modulator for an image signal including a synchronous signal

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