JPH0212519A - Magnetic tape processor - Google Patents
Magnetic tape processorInfo
- Publication number
- JPH0212519A JPH0212519A JP63164217A JP16421788A JPH0212519A JP H0212519 A JPH0212519 A JP H0212519A JP 63164217 A JP63164217 A JP 63164217A JP 16421788 A JP16421788 A JP 16421788A JP H0212519 A JPH0212519 A JP H0212519A
- Authority
- JP
- Japan
- Prior art keywords
- read
- data
- magnetic tape
- held
- command
- 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
Links
- 230000007547 defect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 241000218691 Cupressaceae Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Landscapes
- Memory System Of A Hierarchy Structure (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、情報処理装置に関しＳ特に、磁気テープ処理
装置に於けるデータ読取方式に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an information processing apparatus, and particularly to a data reading method in a magnetic tape processing apparatus.
従来の技術
従来、この種の磁気テープ処理装置に於けるデータ読取
方式は、上位からの読取コマンドに対応して、下位に接
続される磁気テープ装置よりデータを読取っていた。2. Description of the Related Art Conventionally, the data reading method in this type of magnetic tape processing apparatus was to read data from a magnetic tape device connected to a lower level in response to a read command from a higher level.
発明が解決しようとする課題
上述した従来のデータ読取方式は、上位からの読取コマ
ンドに対応して行なう為に、下位に接続される磁気テー
プ装量上の磁気テープの走行が一定速度に達する迄、読
取動作は行なえないという欠点がある。Problems to be Solved by the Invention In the conventional data reading method described above, in order to perform reading in response to a read command from a higher level, the magnetic tape on the magnetic tape storage connected to the lower level has to run until it reaches a certain speed. , the disadvantage is that reading operations cannot be performed.
本発明は従来の上記実情に鑑みてなされたものであり、
従って本発明の目的は、従来の技術に内在する上記欠点
を解消することを可能とした新規々磁気テープ処理装置
を提供することにある。The present invention has been made in view of the above-mentioned conventional situation,
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a novel magnetic tape processing apparatus which makes it possible to eliminate the above-mentioned drawbacks inherent in the prior art.
課題を解決するための手段
上記目的を達成する為に１本発明に係る磁気テープ処理
装置は、上位からのコマンドを解析するコマンド制御部
と、読取コマンドの時に読取データを制御する記憶制御
部と、読取データを保持する記憶部とを備えて構成され
る。Means for Solving the Problems In order to achieve the above objects, a magnetic tape processing device according to the present invention includes a command control section that analyzes commands from a higher level, and a storage control section that controls read data at the time of a read command. , and a storage section that holds read data.
実瘤例
次に本発明をその好ましい一実抱例について図Ｉを参照
して具体的に説明する。EXAMPLE OF THE INVENTION Next, a preferred example of the present invention will be specifically explained with reference to FIG.
第１図は本発明の一実檜例を示すブロック構成図である
。FIG. 1 is a block configuration diagram showing an example of a Japanese cypress according to the present invention.
第１図に於いて１本発明の一実瘤例は、中央処理装置１
０と、磁気テープ処理装置２０と、コマンド制御部２１
と、記憶制御部２２と、記憶部２３と、磁気テープ装置
３０とから成る。In FIG. 1, one embodiment of the present invention is shown in the central processing unit 1.
0, magnetic tape processing device 20, and command control unit 21
, a storage control section 22 , a storage section 23 , and a magnetic tape device 30 .
磁気テープ処理装置２０の上位に接続される中央処理装
置１０より該磁気テープ処理装置２０に対してデータの
書込／読取コマンドが発せられる。コマンド制御部２１
にてコマンドタイプの解析が行なわれ、解析の結果、書
込コマンドの場合には、通常の書込処】が行なわれる。A central processing unit 10 connected above the magnetic tape processing device 20 issues a data write/read command to the magnetic tape processing device 20 . Command control unit 21
The command type is analyzed at , and if the result of the analysis is a write command, normal write processing is performed.
読取コマンドの場合には、記憶制御部２２に於いて、記
憶部２３に格納、保持されているデータを読取データと
して中央処理装置１０にわたす。同時に磁気テープ装置
３０より読取動作を開始し、読取られたデータは記憶制
御部２２に依って記憶部２３に書込まれ、保持される。In the case of a read command, the storage control unit 22 passes the data stored and held in the storage unit 23 to the central processing unit 10 as read data. At the same time, the magnetic tape device 30 starts a reading operation, and the read data is written into the storage section 23 by the storage control section 22 and held.
記憶制御部２２は記憶部２３を２分割するスイッチング
機能と、２分割された記憶部のどちらかを選択する機能
を有し、記憶部２３ｄ磁気テープデータの最大ブロック
サイズの２倍の容量を有する。The storage control unit 22 has a switching function to divide the storage unit 23 into two and a function to select one of the two divided storage units, and has a capacity twice the maximum block size of the magnetic tape data of the storage unit 23d. .
記憶部２３０２分割された部分は、記憶制御部２２のス
イッチング機能に依って相互に使用され、中央処理装置
１０へ渡すデータを読出す部分と、磁気テープ装置３０
よ）読取られたデータを格納、保持する部分とは重＆り
合うとと！ｉ無い。The divided parts of the storage unit 2302 are mutually used depending on the switching function of the storage control unit 22, and are used as a part for reading data to be passed to the central processing unit 10 and a part for reading data to be passed to the central processing unit 10, and a part for reading data to be passed to the central processing unit 10, and a part for reading data to be passed to the central processing unit 10.
) It overlaps with the part that stores and retains the read data! There is no i.
又、格納、保持された読取データは１次の読取コマンド
の中央処理装置１０へ渡すデータとなる。Further, the stored and retained read data becomes data to be passed to the central processing unit 10 for the primary read command.
発明の詳細
な説明したように１本発明によれば、磁気テープ処理装
置に於いて読取コマンドの場合に前回の読取コマンドに
て読取られ、保持されていたデータを読取データとして
上位の装置に渡すことにより、磁気テープ装置の動作可
能時間迄読取動作を待たせる必要はなく、情報処理装置
の高速化が図れるという効果が得られる。DETAILED DESCRIPTION OF THE INVENTION According to the present invention, in the case of a read command in a magnetic tape processing device, the data read by the previous read command and held is passed to the higher-level device as read data. As a result, there is no need to wait for the reading operation until the operational time of the magnetic tape device, and it is possible to achieve the effect that the speed of the information processing device can be increased.
第１図は本発明の一実洩例を示す機能ブロック構成図で
ある。
１０・・・中央処理装置、 ２０・・・磁気テープ処理
装置７２１・・・コマンド制御部、２２・・・記憶制御
部、２３・・・記憶部、３０・・・磁気テープ装置FIG. 1 is a functional block configuration diagram showing an example of the present invention. DESCRIPTION OF SYMBOLS 10... Central processing unit, 20... Magnetic tape processing device 721... Command control unit, 22... Storage control unit, 23... Storage unit, 30... Magnetic tape device
Claims (1)
御部と、読取コマンドの時に読取データを制御する記憶
制御部と、読取データを保持する記憶部とを有すること
を特徴とする磁気テープ処理装置。A magnetic tape processing device comprising: a command control section that analyzes commands issued from a host device; a storage control section that controls read data at the time of a read command; and a storage section that holds read data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63164217A JPH0212519A (en) | 1988-06-30 | 1988-06-30 | Magnetic tape processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63164217A JPH0212519A (en) | 1988-06-30 | 1988-06-30 | Magnetic tape processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0212519A true JPH0212519A (en) | 1990-01-17 |
Family
ID=15788894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63164217A Pending JPH0212519A (en) | 1988-06-30 | 1988-06-30 | Magnetic tape processor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0212519A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010170295A (en) * | 2009-01-22 | 2010-08-05 | Fujitsu Ltd | Storage device and data transfer method for storage device |
-
1988
- 1988-06-30 JP JP63164217A patent/JPH0212519A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010170295A (en) * | 2009-01-22 | 2010-08-05 | Fujitsu Ltd | Storage device and data transfer method for storage device |
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