JPS57117030A - Data transfer device - Google Patents

Data transfer device

Info

Publication number
JPS57117030A
JPS57117030A JP56004268A JP426881A JPS57117030A JP S57117030 A JPS57117030 A JP S57117030A JP 56004268 A JP56004268 A JP 56004268A JP 426881 A JP426881 A JP 426881A JP S57117030 A JPS57117030 A JP S57117030A
Authority
JP
Japan
Prior art keywords
intercepted
receiver
circuit
central processing
magnetic tape
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
JP56004268A
Other languages
Japanese (ja)
Inventor
Takashi Iwasaki
Masahito Maeda
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
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK, NEC Corp, Nippon Electric Co Ltd filed Critical Kokusai Denshin Denwa KK
Priority to JP56004268A priority Critical patent/JPS57117030A/en
Publication of JPS57117030A publication Critical patent/JPS57117030A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Transfer Systems (AREA)

Abstract

PURPOSE:To intercept an information outputted to a magnetic tape device, and to transfer it to other system, without changing the software of a central processing equipment, by intercepting a protocol communicated between a central processing equipment and the magnetic tape device. CONSTITUTION:A confirmation device number sent to a central processing equipment from a magnetic tape device 2 is intercepted by a cable receiver CR2 and is compared 42 with a device number IOA. Subsequently, a write instruction code is intercepted by a receiver CR1, and is compared 41 with a write instruction code expected value WCMD. When the comparison results of the circuits 41 and 42 are in coincidence by a gate circuit G1, the output is provided to a gate circuit G2, and the next data is intercepted by the receiver CR1 and is stored in a memory 44. Also, a device state sent to the equipment 1 from the device 2 is intercepted by the receiver CR2, and is compared 43 with a device state code expected value DST. Subsequently, when an output of the circuit G1 coincides with an output of the circuit 43 by a gate circuit G2, a read-out controlling circuit 45 is started, a data is readout from the memory 44, and is transferred to other system.
JP56004268A 1981-01-14 1981-01-14 Data transfer device Pending JPS57117030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56004268A JPS57117030A (en) 1981-01-14 1981-01-14 Data transfer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56004268A JPS57117030A (en) 1981-01-14 1981-01-14 Data transfer device

Publications (1)

Publication Number Publication Date
JPS57117030A true JPS57117030A (en) 1982-07-21

Family

ID=11579788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56004268A Pending JPS57117030A (en) 1981-01-14 1981-01-14 Data transfer device

Country Status (1)

Country Link
JP (1) JPS57117030A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62102347A (en) * 1985-10-29 1987-05-12 Toshiba Corp Input/output system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62102347A (en) * 1985-10-29 1987-05-12 Toshiba Corp Input/output system

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