JPS578829A - Input and output controller - Google Patents

Input and output controller

Info

Publication number
JPS578829A
JPS578829A JP8289680A JP8289680A JPS578829A JP S578829 A JPS578829 A JP S578829A JP 8289680 A JP8289680 A JP 8289680A JP 8289680 A JP8289680 A JP 8289680A JP S578829 A JPS578829 A JP S578829A
Authority
JP
Japan
Prior art keywords
data
reading
buffer
bytes
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
JP8289680A
Other languages
Japanese (ja)
Inventor
Nobuhiro Taniguchi
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 JP8289680A priority Critical patent/JPS578829A/en
Publication of JPS578829A publication Critical patent/JPS578829A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F5/06—Methods or arrangements for data conversion without changing the order or content of the data handled for changing the speed of data flow, i.e. speed regularising or timing, e.g. delay lines, FIFO buffers; over- or underrun control therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Transfer Systems (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE:To improve the efficiency of use of a system by shortening a data transfer time, by providing a byte number register which compares the number of bytes written in a data buffer with that read out from the data buffer. CONSTITUTION:The cycle of writing in a data buffer 14 and the cycle of reading are alternated and data reading from a disk device 1 and data writing to a disk device 5 are performed simultaneously. For example, the number of data bytes of the 1st record in the device 1 is N and after (m) bytes are written in the buffer 14, a data transfer request signal from the device and a data transfer indication signal from the device 1 alternate. In this case, a byte number comparing register 15 has an (m-1) and an (m) alternately from this time until the completion of the reading of the final data in the 1st record.
JP8289680A 1980-06-20 1980-06-20 Input and output controller Pending JPS578829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8289680A JPS578829A (en) 1980-06-20 1980-06-20 Input and output controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8289680A JPS578829A (en) 1980-06-20 1980-06-20 Input and output controller

Publications (1)

Publication Number Publication Date
JPS578829A true JPS578829A (en) 1982-01-18

Family

ID=13787024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8289680A Pending JPS578829A (en) 1980-06-20 1980-06-20 Input and output controller

Country Status (1)

Country Link
JP (1) JPS578829A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5980453A (en) * 1982-10-29 1984-05-09 Mitsubishi Rayon Co Ltd Carbon fiber reinforced polyolefin resin composition
JPS5986646A (en) * 1982-11-10 1984-05-18 Mitsubishi Rayon Co Ltd Reinforced polyolefin resin composition
JPS6039265A (en) * 1983-08-12 1985-03-01 Fujitsu Ltd Data transfer system
JPS6240562A (en) * 1985-08-17 1987-02-21 Casio Comput Co Ltd File transfer device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567822A (en) * 1978-11-17 1980-05-22 Hitachi Ltd Channel connection system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567822A (en) * 1978-11-17 1980-05-22 Hitachi Ltd Channel connection system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5980453A (en) * 1982-10-29 1984-05-09 Mitsubishi Rayon Co Ltd Carbon fiber reinforced polyolefin resin composition
JPS5986646A (en) * 1982-11-10 1984-05-18 Mitsubishi Rayon Co Ltd Reinforced polyolefin resin composition
JPS6039265A (en) * 1983-08-12 1985-03-01 Fujitsu Ltd Data transfer system
JPS6240562A (en) * 1985-08-17 1987-02-21 Casio Comput Co Ltd File transfer device

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