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JPS55154649A - Disc cash write-in system - Google Patents

Disc cash write-in system

Info

Publication number
JPS55154649A
JPS55154649A JP6300979A JP6300979A JPS55154649A JP S55154649 A JPS55154649 A JP S55154649A JP 6300979 A JP6300979 A JP 6300979A JP 6300979 A JP6300979 A JP 6300979A JP S55154649 A JPS55154649 A JP S55154649A
Authority
JP
Japan
Prior art keywords
unit
data
disc
buffer
magnetic disc
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
JP6300979A
Other languages
Japanese (ja)
Inventor
Masanori Mizuta
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 JP6300979A priority Critical patent/JPS55154649A/en
Publication of JPS55154649A publication Critical patent/JPS55154649A/en
Pending legal-status Critical Current

Links

Landscapes

  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE: To increase the performance and the reliability, by writing the data in the block buffer of a disc each unit and writing the same data on a magnetic disc, in writing the data on a magnetic disc from a CPU.
CONSTITUTION: A disc cash unit 2 is connected via a bidirectional input and output interface 101, and a magnetic disc control unit 3 is connected to the unit 2 via a bidirectional interface 103. Further, the unit 3 is connected to a control section 1 via a bidirectional interface 102, and further, a magnetic disc unit 4 is connected to the unit 3. The unit 2 is provided with an instruction control section 6 and a block buffer 7, and when a block data is written in the unit 4 from a CPU, the control section 6 interpretes the instruction and checks whether or not the data are in the blcok buffer 7. If no block buffer is present in the buffer 7, a new block buffer is assured and it is written in the unit 4 simultaneously with the storage of the data.
COPYRIGHT: (C)1980,JPO&Japio
JP6300979A 1979-05-22 1979-05-22 Disc cash write-in system Pending JPS55154649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6300979A JPS55154649A (en) 1979-05-22 1979-05-22 Disc cash write-in system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6300979A JPS55154649A (en) 1979-05-22 1979-05-22 Disc cash write-in system

Publications (1)

Publication Number Publication Date
JPS55154649A true JPS55154649A (en) 1980-12-02

Family

ID=13216882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6300979A Pending JPS55154649A (en) 1979-05-22 1979-05-22 Disc cash write-in system

Country Status (1)

Country Link
JP (1) JPS55154649A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5384632A (en) * 1976-12-30 1978-07-26 Honeywell Inf Systems Output*input cache system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5384632A (en) * 1976-12-30 1978-07-26 Honeywell Inf Systems Output*input cache system

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