JPS5640936A - Initial diagnosis system for multiplex bus constitution system - Google Patents

Initial diagnosis system for multiplex bus constitution system

Info

Publication number
JPS5640936A
JPS5640936A JP11687979A JP11687979A JPS5640936A JP S5640936 A JPS5640936 A JP S5640936A JP 11687979 A JP11687979 A JP 11687979A JP 11687979 A JP11687979 A JP 11687979A JP S5640936 A JPS5640936 A JP S5640936A
Authority
JP
Japan
Prior art keywords
diagnosis
bus
unit
initial diagnosis
emitting diode
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
JP11687979A
Other languages
Japanese (ja)
Inventor
Hisaki Yoshida
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 JP11687979A priority Critical patent/JPS5640936A/en
Publication of JPS5640936A publication Critical patent/JPS5640936A/en
Pending legal-status Critical Current

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  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE: To perform the initial diagnosis for the overall system in a short time, by carrying out a diagnosis based on the result of diagnosis given from other common bus and the result of diagnosis given from the devices connected to the self-common bus and provided adjacent to each other.
CONSTITUTION: When the voltage is set up at the power sources 16 and 26 each, the confirmation signals are transmitted to the buses 1 and 2. In response to the signal supplied to the bus 2, the disk control unit 22 plus the bus coupling units 23 and 27 which are capable of diagnosis each perform the diagnosis independently. And the results of these diagnosis are preserved at flip-flops 221, 271 and 231 each to give the light emission to the light emitting diode. On the other hand, the signal produced at the terminal unit 21 is applied to the disk control unit 22, and the signal supplied from the OR circuit 222 is applied to the bus coupling unit 27. And the signals from the OR circuits 272 and 101 are applied to the OR circuit 102 of the bus coupling unit 23. And this logic sum signal is applied to the light emitting diode 110 of the terminal unit 25.
COPYRIGHT: (C)1981,JPO&Japio
JP11687979A 1979-09-12 1979-09-12 Initial diagnosis system for multiplex bus constitution system Pending JPS5640936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11687979A JPS5640936A (en) 1979-09-12 1979-09-12 Initial diagnosis system for multiplex bus constitution system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11687979A JPS5640936A (en) 1979-09-12 1979-09-12 Initial diagnosis system for multiplex bus constitution system

Publications (1)

Publication Number Publication Date
JPS5640936A true JPS5640936A (en) 1981-04-17

Family

ID=14697891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11687979A Pending JPS5640936A (en) 1979-09-12 1979-09-12 Initial diagnosis system for multiplex bus constitution system

Country Status (1)

Country Link
JP (1) JPS5640936A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03155024A (en) * 1989-11-14 1991-07-03 Fujitsu General Ltd Plasma display panel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03155024A (en) * 1989-11-14 1991-07-03 Fujitsu General Ltd Plasma display panel

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