JPS57130142A - Data transfer system - Google Patents

Data transfer system

Info

Publication number
JPS57130142A
JPS57130142A JP56016542A JP1654281A JPS57130142A JP S57130142 A JPS57130142 A JP S57130142A JP 56016542 A JP56016542 A JP 56016542A JP 1654281 A JP1654281 A JP 1654281A JP S57130142 A JPS57130142 A JP S57130142A
Authority
JP
Japan
Prior art keywords
data
transfer
response
byte
data transfer
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
JP56016542A
Other languages
Japanese (ja)
Inventor
Shingo Yamane
Tetsuo Yano
Yoshimi Suzuki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56016542A priority Critical patent/JPS57130142A/en
Publication of JPS57130142A publication Critical patent/JPS57130142A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
    • G06F13/4221—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus
    • G06F13/4226—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus with asynchronous protocol

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To shorten the time required for data transfer, by transferring n bytes continuously by only one transfer request signal from the first device and the response signal from the second device in the data transfer system for transfer of n(>1)-byte data. CONSTITUTION:When a device 1 starts the transmission of a transfer request DR for requesting data transfer to a device 2 and (n)-byte data D1-Dn, the device 2 takes in successively data D1-Dn at a timing T and starts the transmission of a response RS at the time point of receiving of data D2 of the second byte. When the device 1 completes to transfer data continuously up to data Dn, the device 1 releases the transfer request DR, and the device 2 releases the response RS in response to this release, thus completing data transfer of (n)-byte data D1-Dn. Since the transfer request and the response are transmitted and received only once for data transfer of (n)-byte data, data is transferred efficiently.
JP56016542A 1981-02-05 1981-02-05 Data transfer system Pending JPS57130142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56016542A JPS57130142A (en) 1981-02-05 1981-02-05 Data transfer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56016542A JPS57130142A (en) 1981-02-05 1981-02-05 Data transfer system

Publications (1)

Publication Number Publication Date
JPS57130142A true JPS57130142A (en) 1982-08-12

Family

ID=11919148

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56016542A Pending JPS57130142A (en) 1981-02-05 1981-02-05 Data transfer system

Country Status (1)

Country Link
JP (1) JPS57130142A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985003396A1 (en) * 1984-01-30 1985-08-01 Fanuc Ltd Data transmission system
JPS6187445A (en) * 1984-10-04 1986-05-02 Nippon Telegr & Teleph Corp <Ntt> Four-wire type semi-duplex communication system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5072547A (en) * 1973-10-29 1975-06-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5072547A (en) * 1973-10-29 1975-06-16

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985003396A1 (en) * 1984-01-30 1985-08-01 Fanuc Ltd Data transmission system
JPS6187445A (en) * 1984-10-04 1986-05-02 Nippon Telegr & Teleph Corp <Ntt> Four-wire type semi-duplex communication system
JPH0448018B2 (en) * 1984-10-04 1992-08-05 Nippon Telegraph & Telephone

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