JPS5622118A - Input/output control device - Google Patents

Input/output control device

Info

Publication number
JPS5622118A
JPS5622118A JP9761279A JP9761279A JPS5622118A JP S5622118 A JPS5622118 A JP S5622118A JP 9761279 A JP9761279 A JP 9761279A JP 9761279 A JP9761279 A JP 9761279A JP S5622118 A JPS5622118 A JP S5622118A
Authority
JP
Japan
Prior art keywords
input
output
control device
state
output control
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
JP9761279A
Other languages
Japanese (ja)
Other versions
JPS5920128B2 (en
Inventor
Yoshiro Yoshioka
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 JP54097612A priority Critical patent/JPS5920128B2/en
Publication of JPS5622118A publication Critical patent/JPS5622118A/en
Publication of JPS5920128B2 publication Critical patent/JPS5920128B2/en
Expired legal-status Critical Current

Links

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  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To prevent the input/output device from being left in the unusable state, by monitoring the status holding state of each input/output device by the input/ output control device and then securing an autonomous canceling of the holding state of the input/output control device itself.
CONSTITUTION: Input/output control device 3 is connected between plural channels #A/#B and input/output device I/O, and bus selecting circuit part 5 is provided at the channel #A/#B side of device 3 with connection of read/write control part 7 secured at the I/O side. Then the data is transferred between channels #A/#B and I/O by interface control part 6. And the information showing the presence or absence of the status is set to memory part 9 corresponding to the input/output device via bus selection control part 8. The state of part 9 is always monitored by part 8, and I/O is canceled forcedly by part 6 and when the fixed time elapses. Thus I/O is never left in the state under which it is not usable.
COPYRIGHT: (C)1981,JPO&Japio
JP54097612A 1979-07-31 1979-07-31 input/output control device Expired JPS5920128B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54097612A JPS5920128B2 (en) 1979-07-31 1979-07-31 input/output control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54097612A JPS5920128B2 (en) 1979-07-31 1979-07-31 input/output control device

Publications (2)

Publication Number Publication Date
JPS5622118A true JPS5622118A (en) 1981-03-02
JPS5920128B2 JPS5920128B2 (en) 1984-05-11

Family

ID=14197028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54097612A Expired JPS5920128B2 (en) 1979-07-31 1979-07-31 input/output control device

Country Status (1)

Country Link
JP (1) JPS5920128B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146362A (en) * 1983-02-09 1984-08-22 Fujitsu Ltd Interface switching control system
JPS62296695A (en) * 1986-06-17 1987-12-23 Fujitsu Ltd Outgoning trunk controller for function decentrilized control type exchange

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146362A (en) * 1983-02-09 1984-08-22 Fujitsu Ltd Interface switching control system
JPS62296695A (en) * 1986-06-17 1987-12-23 Fujitsu Ltd Outgoning trunk controller for function decentrilized control type exchange
JPH0822096B2 (en) * 1986-06-17 1996-03-04 富士通株式会社 Outgoing trunk control device for function-controlled distributed exchange

Also Published As

Publication number Publication date
JPS5920128B2 (en) 1984-05-11

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