[go: up one dir, main page]

JPS5665257A - Data transfer system between external memory devices - Google Patents

Data transfer system between external memory devices

Info

Publication number
JPS5665257A
JPS5665257A JP14254179A JP14254179A JPS5665257A JP S5665257 A JPS5665257 A JP S5665257A JP 14254179 A JP14254179 A JP 14254179A JP 14254179 A JP14254179 A JP 14254179A JP S5665257 A JPS5665257 A JP S5665257A
Authority
JP
Japan
Prior art keywords
data
cpu11
transfer
unit
control unit
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
JP14254179A
Other languages
Japanese (ja)
Inventor
Hisashi Matsumura
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP14254179A priority Critical patent/JPS5665257A/en
Publication of JPS5665257A publication Critical patent/JPS5665257A/en
Pending legal-status Critical Current

Links

Landscapes

  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE: To elevate the operation efficiency of the system, by providing an exclusive control unit for controlling a data transfer operation, and also an exclusive buffer memory for temporaily storing a transfer data, between the external memory devices, and using CPU for other control operation while a data is being transferred.
CONSTITUTION: The I/O device consisting of plural typewriters, display units, etc. is provided, standing against the main memory 12, and they are connected by the CPU BUS14. The disk control unit 15 is connected to this BUS14, and the magnetic disks 16, 17 are connected to the unit 15. A controller control unit 18 and a disk buffer memory 19 are provided on this unit 15, a data of the device 13 is read out by CPU11, when a data is transferred between the disks 16, 17 to which it has been designated to write a data, the transfer data is temporarily stored in the memory 19, and the data transfer operation is controlled by the control unit 18. And after the data transfer command from CPU11 has been output, the transfer control between the disks 16, 17 is shifted to the unit 15 from CPU11, and CPU11 is used for other control operation.
COPYRIGHT: (C)1981,JPO&Japio
JP14254179A 1979-11-01 1979-11-01 Data transfer system between external memory devices Pending JPS5665257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14254179A JPS5665257A (en) 1979-11-01 1979-11-01 Data transfer system between external memory devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14254179A JPS5665257A (en) 1979-11-01 1979-11-01 Data transfer system between external memory devices

Publications (1)

Publication Number Publication Date
JPS5665257A true JPS5665257A (en) 1981-06-02

Family

ID=15317744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14254179A Pending JPS5665257A (en) 1979-11-01 1979-11-01 Data transfer system between external memory devices

Country Status (1)

Country Link
JP (1) JPS5665257A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57166658A (en) * 1981-04-06 1982-10-14 Hitachi Ltd Auxiliary storage device
JPS5818763A (en) * 1981-07-24 1983-02-03 Nec Corp File controlling device having data transfer path to another file controlling device inbetween
JPS5945571A (en) * 1982-09-06 1984-03-14 Yokogawa Hokushin Electric Corp Device for controlling data transfer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52155937A (en) * 1976-06-21 1977-12-24 Nec Corp Data transfer unit
JPS55159263A (en) * 1979-05-30 1980-12-11 Nec Corp Read-in and write-in system for magnetic disc

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52155937A (en) * 1976-06-21 1977-12-24 Nec Corp Data transfer unit
JPS55159263A (en) * 1979-05-30 1980-12-11 Nec Corp Read-in and write-in system for magnetic disc

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57166658A (en) * 1981-04-06 1982-10-14 Hitachi Ltd Auxiliary storage device
JPS5818763A (en) * 1981-07-24 1983-02-03 Nec Corp File controlling device having data transfer path to another file controlling device inbetween
JPS5945571A (en) * 1982-09-06 1984-03-14 Yokogawa Hokushin Electric Corp Device for controlling data transfer

Similar Documents

Publication Publication Date Title
JPS5665257A (en) Data transfer system between external memory devices
JPS5730170A (en) Buffer memory control system
JPS558605A (en) Data processing system
GB9019891D0 (en) Computer memory array control
JPS5534756A (en) Double recording system of magnetic disc device
WO1981000158A1 (en) Numerical control apparatus
JPS55123749A (en) Double recording system of magnetic disc
JPS57111645A (en) Input-output control system
JPS642155A (en) Write controlling method for external memory device
JPS5539993A (en) Input-output controller
JPS55153028A (en) Data channel unit
JPS54107231A (en) Micro instruction control-type data processing unit
JPS56121130A (en) Dma control system
JPS51142939A (en) Data processor
JPS5797157A (en) Magnetic disk control device
JPS564855A (en) Control system for command retrial
JPS6121696Y2 (en)
JPS5685177A (en) Picture data expanding device
JPS5498134A (en) Input/output control system
JPS5487140A (en) Data transfer control system
JPS52119038A (en) Data controlling method
JPS57123445A (en) Recorder of digital waveform
Kapeghian et al. Controller for Data Processing System
JPS5622173A (en) Retrieving device for information memory
JPS5498133A (en) Input/output control system