JPS56129928A - Channel device - Google Patents

Channel device

Info

Publication number
JPS56129928A
JPS56129928A JP3157680A JP3157680A JPS56129928A JP S56129928 A JPS56129928 A JP S56129928A JP 3157680 A JP3157680 A JP 3157680A JP 3157680 A JP3157680 A JP 3157680A JP S56129928 A JPS56129928 A JP S56129928A
Authority
JP
Japan
Prior art keywords
channel
failure
input
switching
channel number
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
JP3157680A
Other languages
Japanese (ja)
Inventor
Koichi Hayashi
Tadashi Sato
Akio Sasaki
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 JP3157680A priority Critical patent/JPS56129928A/en
Publication of JPS56129928A publication Critical patent/JPS56129928A/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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements

Abstract

PURPOSE:To enable to execute the input/output operation by automatically switching the channel device in failure, by providing the means storing the failure of channel every channel device and the means switching the channel number in failure to the channel number without failure. CONSTITUTION:The channel controller (CHC) 20 is provided with FFs 23, 24 respectively storing the channels A1, B2 in failure, channel number switching circuits 28, 29 switching the channel number in failure designated with the program (PR) 19 to the channel number without failure, register 21 sotring the instruction from PR 19, and decoder 25. Further, the input/output trunks IOTs 3, 4 which are connected to the channels A, B and can select the connection with other channels, are provided. If a failure is taken place to the channel A1 while the channel A1 is in input/output operation with IO32 via IOT3 through the instruction of PR19, CHC20 sets FF23 and switches the circuit 29 to the channel B2, allowing to switch IOT3 to the channel B2 to execute the input/output operation of IO32.
JP3157680A 1980-03-14 1980-03-14 Channel device Pending JPS56129928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3157680A JPS56129928A (en) 1980-03-14 1980-03-14 Channel device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3157680A JPS56129928A (en) 1980-03-14 1980-03-14 Channel device

Publications (1)

Publication Number Publication Date
JPS56129928A true JPS56129928A (en) 1981-10-12

Family

ID=12334998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3157680A Pending JPS56129928A (en) 1980-03-14 1980-03-14 Channel device

Country Status (1)

Country Link
JP (1) JPS56129928A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03237833A (en) * 1990-02-14 1991-10-23 Matsushita Graphic Commun Syst Inc Facsimile store and forward multiple address equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03237833A (en) * 1990-02-14 1991-10-23 Matsushita Graphic Commun Syst Inc Facsimile store and forward multiple address equipment

Similar Documents

Publication Publication Date Title
JPS56129928A (en) Channel device
JPS5762062A (en) Controlling method for copying device equipped with sorter
JPS5769344A (en) Controller of stored program
JPS5781630A (en) Electronic circuit
JPS5720864A (en) Vector processor
JPS57148479A (en) Apparatus controlling system
JPS5771037A (en) Input equipment
JPS54139446A (en) Process mode control unit
JPS5685104A (en) Sequence controller
JPS5589642A (en) Air conditioner
JPS5422074A (en) Switching control system
JPS5380929A (en) Memory unit
JPS6459524A (en) System for selecting input/output device
JPS56152390A (en) Trunk control interface circuit
JPS5739403A (en) Sequence control device
JPS5384502A (en) Selective calling unit
JPS5532180A (en) Sequence controller capable of connecting plurality of external equipments
JPS5793720A (en) Output set circuit for delayed type flip-flop
JPS5432906A (en) Swiching unit
JPS5330827A (en) Numerical display system
JPS6425647A (en) Console changeover device
JPS57127248A (en) Console control device
JPS5794849A (en) Microprogram controller
JPS57196355A (en) Data processor
JPS55150011A (en) Process controller