JPS54100235A - Diagnosis system for channel interface circuit - Google Patents

Diagnosis system for channel interface circuit

Info

Publication number
JPS54100235A
JPS54100235A JP657178A JP657178A JPS54100235A JP S54100235 A JPS54100235 A JP S54100235A JP 657178 A JP657178 A JP 657178A JP 657178 A JP657178 A JP 657178A JP S54100235 A JPS54100235 A JP S54100235A
Authority
JP
Japan
Prior art keywords
diagnosis
control part
register
external
turned
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.)
Granted
Application number
JP657178A
Other languages
Japanese (ja)
Other versions
JPS5819086B2 (en
Inventor
Tetsuo Kawamura
Seiichiro Yamamoto
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 JP53006571A priority Critical patent/JPS5819086B2/en
Publication of JPS54100235A publication Critical patent/JPS54100235A/en
Publication of JPS5819086B2 publication Critical patent/JPS5819086B2/en
Expired legal-status Critical Current

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  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE: To obtain a diagnosis function featuring a low cost and high maintenance property for the input/output control unit IOC by securing execution of both the self- diagnosis and the external diagosis for channel interface CHI via the same diagnosis program.
CONSTITUTION: Writing command 2 and writing data 3 are set to writing diagnosis register 6 through IOC main control part 1. At the same time, reading command 4 is sent to reading diagnosis register 7 to be then transferred to CHIF control part 8 or external diagnosis unit 30. Control part 8 rceives CHIF signal 11 from receiver circuit 9 or recives false IF signal set to register 6, and sends IF signal 12 back to the channel through transmitter circuit 10 in the form of the answer or sends diagnosis register reading data 5 to main control part 1 via registor 7. When switch 13 is turned on, SW1WSW5 are turned toward the dotted line side to carry out quick and easy self-diagnosis. With switch 13 turned off, the strict checking becomes possible for the channel plus the transmitter/receiver circuits through the external diagnosis.
COPYRIGHT: (C)1979,JPO&Japio
JP53006571A 1978-01-24 1978-01-24 Channel interface circuit diagnosis method Expired JPS5819086B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53006571A JPS5819086B2 (en) 1978-01-24 1978-01-24 Channel interface circuit diagnosis method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53006571A JPS5819086B2 (en) 1978-01-24 1978-01-24 Channel interface circuit diagnosis method

Publications (2)

Publication Number Publication Date
JPS54100235A true JPS54100235A (en) 1979-08-07
JPS5819086B2 JPS5819086B2 (en) 1983-04-16

Family

ID=11642014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53006571A Expired JPS5819086B2 (en) 1978-01-24 1978-01-24 Channel interface circuit diagnosis method

Country Status (1)

Country Link
JP (1) JPS5819086B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4964036A (en) * 1988-12-21 1990-10-16 International Business Machines Corporation Channel hardware diagnostic apparatus and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879680U (en) * 1981-11-27 1983-05-30 株式会社大井製作所 Automotive sliding door restraint device
JPS63162635U (en) * 1987-04-15 1988-10-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4964036A (en) * 1988-12-21 1990-10-16 International Business Machines Corporation Channel hardware diagnostic apparatus and method

Also Published As

Publication number Publication date
JPS5819086B2 (en) 1983-04-16

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