JPS5790771A - Disk cash control system - Google Patents

Disk cash control system

Info

Publication number
JPS5790771A
JPS5790771A JP55167746A JP16774680A JPS5790771A JP S5790771 A JPS5790771 A JP S5790771A JP 55167746 A JP55167746 A JP 55167746A JP 16774680 A JP16774680 A JP 16774680A JP S5790771 A JPS5790771 A JP S5790771A
Authority
JP
Japan
Prior art keywords
disk device
cpu
data
write
disk
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
JP55167746A
Other languages
Japanese (ja)
Inventor
Kiyoshi Senba
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
Original Assignee
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55167746A priority Critical patent/JPS5790771A/en
Publication of JPS5790771A publication Critical patent/JPS5790771A/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)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE:To reduce the writing time on a disk device viewed from a CPU and at the same time to avoid the occurrence of an error in the fault procession, by sending the end of the writing back to the CPU at the starting time point of the data writing of the disk device. CONSTITUTION:A disk cash contains I/O circuits 1 and 3 for a CPU and a disk device respectively, a cash memory 2, a control circuit 4 and an MPU5. A data write detecting circuit of the disk device is installed to the circuit 4. When the data is written to the disk device from the CPU, the write data is transferred to the disk cash. Then the start of writing of the disk device is detected by the detecting circuit in a lapse of a certain time after a prescribed quantity of the write data is sent to the disk device. Thus a write start detection signal is applied to an MPU5, and the end is checked for the reception of the write data from the CPU. Then a write end signal is sent back to the CPU if the reception of the data is through.
JP55167746A 1980-11-28 1980-11-28 Disk cash control system Pending JPS5790771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55167746A JPS5790771A (en) 1980-11-28 1980-11-28 Disk cash control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55167746A JPS5790771A (en) 1980-11-28 1980-11-28 Disk cash control system

Publications (1)

Publication Number Publication Date
JPS5790771A true JPS5790771A (en) 1982-06-05

Family

ID=15855336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55167746A Pending JPS5790771A (en) 1980-11-28 1980-11-28 Disk cash control system

Country Status (1)

Country Link
JP (1) JPS5790771A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111558A (en) * 1982-12-17 1984-06-27 Nec Corp Disk cache device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111558A (en) * 1982-12-17 1984-06-27 Nec Corp Disk cache device

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