JPS56124959A - Check system of digital equipment - Google Patents

Check system of digital equipment

Info

Publication number
JPS56124959A
JPS56124959A JP2666180A JP2666180A JPS56124959A JP S56124959 A JPS56124959 A JP S56124959A JP 2666180 A JP2666180 A JP 2666180A JP 2666180 A JP2666180 A JP 2666180A JP S56124959 A JPS56124959 A JP S56124959A
Authority
JP
Japan
Prior art keywords
program
timer
hard
equipment
abnormal
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
JP2666180A
Other languages
Japanese (ja)
Inventor
Tomio Chiba
Eizaburo Sako
Junichi Makino
Kazuhiro Sano
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2666180A priority Critical patent/JPS56124959A/en
Publication of JPS56124959A publication Critical patent/JPS56124959A/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
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs

Abstract

PURPOSE:To check each memory practically, by installing a program processing time supervisory timer to the outside of the digital equipment as hardware, and setting or resetting the hard-timer in accordance with start and end of a program. CONSTITUTION:A hard-timer is connected to the outside of the digital equipment 1 equipped with an operational processing equipment, a program store memory and a data store memory, through the address bus, the data bus and the bus for outputting a control signal. On this hard-timer are provided a timing generating circuit 2, a time-over detection counter 3, a time-short detection counter 4, and an abnormal store control circuit 5. And, the counter 3 and 4 are set or reset whenever execution of a program is started and ended, the function and operation of the equipment 1 are checked prior to execution of a program, and when they are abnormal, an abnormal alarm signal is generated.
JP2666180A 1980-03-05 1980-03-05 Check system of digital equipment Pending JPS56124959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2666180A JPS56124959A (en) 1980-03-05 1980-03-05 Check system of digital equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2666180A JPS56124959A (en) 1980-03-05 1980-03-05 Check system of digital equipment

Publications (1)

Publication Number Publication Date
JPS56124959A true JPS56124959A (en) 1981-09-30

Family

ID=12199595

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2666180A Pending JPS56124959A (en) 1980-03-05 1980-03-05 Check system of digital equipment

Country Status (1)

Country Link
JP (1) JPS56124959A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5420636A (en) * 1977-07-15 1979-02-16 Mitsubishi Electric Corp Computer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5420636A (en) * 1977-07-15 1979-02-16 Mitsubishi Electric Corp Computer

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