JPS635539U - - Google Patents

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Publication number
JPS635539U
JPS635539U JP9728586U JP9728586U JPS635539U JP S635539 U JPS635539 U JP S635539U JP 9728586 U JP9728586 U JP 9728586U JP 9728586 U JP9728586 U JP 9728586U JP S635539 U JPS635539 U JP S635539U
Authority
JP
Japan
Prior art keywords
battery
magnetic disk
abnormality
write
cache memory
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
JP9728586U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP9728586U priority Critical patent/JPS635539U/ja
Publication of JPS635539U publication Critical patent/JPS635539U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例を示す構成ブロツク
図、第２図は従来装置の構成図である。 １……磁気デイスク装置、２……デイスク制御
回路、４……キヤツシユメモリ、５……バツテリ
ー、６……バツテリー監視回路。 FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram of a conventional device. 1...Magnetic disk device, 2...Disk control circuit, 4...Cache memory, 5...Battery, 6...Battery monitoring circuit.

Claims (1)

【実用新案登録請求の範囲】 キヤツシユメモリを備えた磁気デイスク装置に
おいて、 前記キヤツシユメモリをバツクアツプするバツ
テリーと、 このバツテリーの電圧を監視するバツテリー監
視回路と、 このバツテリー監視回路でバツテリーが正常と
判断したときはライトバツク動作を行い、異常と
判断したときはライトスルー動作を行うように前
気磁気デイスク装置を制御するデイスク制御回路
とを設けたことを特徴とする磁気デイスク制御装
置。[Scope of Claim for Utility Model Registration] A magnetic disk device equipped with a cache memory, comprising: a battery for backing up the cache memory; a battery monitoring circuit for monitoring the voltage of the battery; and a battery monitoring circuit for determining whether the battery is normal. 1. A magnetic disk control device comprising: a disk control circuit that controls a forward magnetic disk device to perform a write-back operation when it is determined that there is an abnormality, and to perform a write-through operation when it is determined that there is an abnormality.
JP9728586U 1986-06-25 1986-06-25 Pending JPS635539U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9728586U JPS635539U (en) 1986-06-25 1986-06-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9728586U JPS635539U (en) 1986-06-25 1986-06-25

Publications (1)

Publication Number Publication Date
JPS635539U true JPS635539U (en) 1988-01-14

Family

ID=30964080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9728586U Pending JPS635539U (en) 1986-06-25 1986-06-25

Country Status (1)

Country Link
JP (1) JPS635539U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01288948A (en) * 1988-05-16 1989-11-21 Fujitsu Ltd Memory data protective system
JPH03208145A (en) * 1990-01-10 1991-09-11 Matsushita Electric Ind Co Ltd Information recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01288948A (en) * 1988-05-16 1989-11-21 Fujitsu Ltd Memory data protective system
JPH03208145A (en) * 1990-01-10 1991-09-11 Matsushita Electric Ind Co Ltd Information recording and reproducing device

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