JPS5773458A - System diagnosis system - Google Patents

System diagnosis system

Info

Publication number
JPS5773458A
JPS5773458A JP55148592A JP14859280A JPS5773458A JP S5773458 A JPS5773458 A JP S5773458A JP 55148592 A JP55148592 A JP 55148592A JP 14859280 A JP14859280 A JP 14859280A JP S5773458 A JPS5773458 A JP S5773458A
Authority
JP
Japan
Prior art keywords
data
processor
discriminates
folding
coincide
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
JP55148592A
Other languages
Japanese (ja)
Inventor
Sakae Shimada
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 JP55148592A priority Critical patent/JPS5773458A/en
Publication of JPS5773458A publication Critical patent/JPS5773458A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

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 separate a fault generating part to discriminate the part by folding diagnosis data with the 1st and 2nd folding connection devices to return the data to a processor and providing a discriminator comparing transmitting data with the 1st and 2nd returned data. CONSTITUTION:A folding route through connecting passages 5, 7 is added to the titled sytem as opposed to conventional systems. After sending a transmitting data A, a processor 1 discriminates whether transmitted data B arriving within a subscribed period is received or not by a discriminating part 3. In case of irregular data transfer, the contents of response data B are incorrect or the response data B are not terminated. Then the discriminating part 3 compares the transmitting data A with the returned data A1 and A2 and, if these data coincide with each other, discriminates that the processor 12 is troubles. If the data A and A1 coincide with each other and only the data A2 is different from the former data, the discriminator 3 discriminates that connecting routes 6-8 are troubled and, if the data A and A1 are different each other, discriminates there is trouble in the side of the processor 1 including the connecting route 5 and an interface controlling circuit 4.
JP55148592A 1980-10-23 1980-10-23 System diagnosis system Pending JPS5773458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55148592A JPS5773458A (en) 1980-10-23 1980-10-23 System diagnosis system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55148592A JPS5773458A (en) 1980-10-23 1980-10-23 System diagnosis system

Publications (1)

Publication Number Publication Date
JPS5773458A true JPS5773458A (en) 1982-05-08

Family

ID=15456193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55148592A Pending JPS5773458A (en) 1980-10-23 1980-10-23 System diagnosis system

Country Status (1)

Country Link
JP (1) JPS5773458A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6291966A (en) * 1985-10-18 1987-04-27 Fuji Xerox Co Ltd Controller for copying machine
JPH05250200A (en) * 1992-03-09 1993-09-28 Nec Corp Bus confounding circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6291966A (en) * 1985-10-18 1987-04-27 Fuji Xerox Co Ltd Controller for copying machine
JPH05250200A (en) * 1992-03-09 1993-09-28 Nec Corp Bus confounding circuit

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