JPS62250558A - Read out controller for rotary recording medium - Google Patents
Read out controller for rotary recording mediumInfo
- Publication number
- JPS62250558A JPS62250558A JP9208486A JP9208486A JPS62250558A JP S62250558 A JPS62250558 A JP S62250558A JP 9208486 A JP9208486 A JP 9208486A JP 9208486 A JP9208486 A JP 9208486A JP S62250558 A JPS62250558 A JP S62250558A
- Authority
- JP
- Japan
- Prior art keywords
- host device
- sector
- sectors
- host
- read
- 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
- 230000008707 rearrangement Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、回転記録媒体の読み出し制御装置に係り、特
に、一度の読み出しにおいて、複数のセクタを高速に読
み取るのに好適な装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a read control device for a rotating recording medium, and particularly to a device suitable for reading a plurality of sectors at high speed in one read.
従来の装置は、特開昭５８−２０７１６０号公報に記載
のように、一度の読み出しにおいて、複数のセクタを読
み出す場合、回転待ち時間短縮を目的に、前記複数セク
タの中で時間的に早く読み出し可能となったセクタから
読み出すようになっていた。As described in Japanese Unexamined Patent Application Publication No. 58-207160, when reading multiple sectors at one time, conventional devices read out the multiple sectors earlier in time for the purpose of reducing rotational waiting time. It read from the available sectors.
しかし、上位装置側で必要とする情報のセクタ順序と上
記従来技術で読み出した情報のセクタ順序は、一致する
ことがほとんどないため、読み出し時のセクタ順序のま
ま、上位装置の記憶装置に転送した場合、必要とするセ
クタ順序となるように上位装置側で並べかえを必要とす
る問題があった。本発明の目的は、下位装置である回転
記憶媒体制御装置において、前記並べかえを行うことに
より、上位装置側での前記並べかえのオーバヘッドを解
消することにある。However, since the sector order of the information required by the host device and the sector order of the information read using the above-mentioned conventional technology rarely match, it is not possible to transfer the sector order of the information read out to the storage device of the host device with the same sector order at the time of reading. In this case, there was a problem in that the host device needed to rearrange the sectors so as to obtain the required sector order. An object of the present invention is to eliminate the overhead of the above-mentioned rearrangement on the higher-level device side by performing the above-mentioned rearrangement in a rotating storage medium control device that is a lower-level device.
Ｃ問題点を解決するための手段〕
上記目的は、各読み出しセクタのｔｏと上位装置が指定
した、読み出し情報を格納するための記憶装置の記憶域
番地と、上位装置が指定したセクタ順序を用いて、読み
出し情報の格納番地を算出する手段と、前記格納アドレ
スから前記セクタ読み出し情報を格納する手段を設ける
ことにより達成される。Means for Solving Problem C] The above purpose is to use the to of each read sector, the storage area address of the storage device for storing read information specified by the host device, and the sector order specified by the host device. This is achieved by providing means for calculating the storage address of the read information and means for storing the sector read information from the storage address.
複数セクタの読み出し動作開始後、上位装置の指定した
記憶装置上で、読み出し情報が上位装置に指定されたセ
クタ順序に並ぶように、読み出したセクタのんＤに従っ
て前記記憶装置上での格納アドレスを算出し、その算出
アドレスを起点として前記セクタの読み出し情報を格納
する１以上の動作を、上位装置に指定されたセクタ分だ
け行うことにより、上位装置の指定した記憶装置上に、
指定したセクタが、指定順に格納される。After starting the read operation of multiple sectors, the storage address on the storage device designated by the host device is set according to the read sector number D so that the read information is arranged in the sector order designated by the host device. By performing one or more operations of calculating and storing the read information of the sector using the calculated address as a starting point for the sectors designated by the host device, the information is stored on the storage device designated by the host device.
The specified sectors are stored in the specified order.
このように、読み出しセクタの並べかえを、回転記録媒
体制御装置で行うことにより、上位装置のオーバヘッド
の増加を抑制できる。In this way, by rearranging the read sectors by the rotating recording medium control device, it is possible to suppress an increase in the overhead of the host device.
以下、本発明の一実施例を第２図により説明する。図中
４は情報転送制御回路（以下ＤＭＡＣと省略する）、５
は全体の制御を行なうマイクロプロセッサ（以下ＭＰと
省略する。）、６はフレキシブルディスク制御回路（以
下ＦＤＣと省略する）である。ＭＰ５は、上位装置より
、情報を読み出すセクタとその順序、情報を転送する記
憶装置の先頭番地を受けとる。ＭＰ５はＦＤＣ６より、
転送可能なセクタを知り、ＦＤＣ６に該当セクタの読み
出しを指示する。上位装置より指示されたセクタ順に読
み出し情報が並ぶように、ＭＰ５は、該当セクタの上位
装置が指定した記憶装置上への転送番地を算出し、該当
セクタ読み出し情報を前記算出番地を起点として前記記
憶装置に転送するようにＤＭＡＣ４へ指示する。こうし
て上位装置の指示した順序で、上位装置の指定した記憶
装置の先頭番地から読み出し情報が格納される。An embodiment of the present invention will be described below with reference to FIG. In the figure, 4 is an information transfer control circuit (hereinafter abbreviated as DMAC), 5
6 is a microprocessor (hereinafter abbreviated as MP) that performs overall control, and 6 is a flexible disk control circuit (hereinafter abbreviated as FDC). The MP5 receives from the host device the sectors from which information is to be read, their order, and the starting address of the storage device to which the information is to be transferred. MP5 is from FDC6,
It learns which sectors can be transferred and instructs the FDC 6 to read the sectors. The MP5 calculates the transfer address of the relevant sector onto the storage device specified by the host device so that the read information is arranged in the order of sectors specified by the host device, and transfers the relevant sector read information to the storage device starting from the calculated address. Instructs the DMAC 4 to transfer the data to the device. In this way, the read information is stored from the first address of the storage device specified by the higher-level device in the order instructed by the higher-level device.
以上のように１回転記録媒体制御装置で、上位装置が要
求するセクタ順序に読み出し情報を並べかえることによ
り、上位装置側でのオーバヘッドを解消できる。As described above, by rearranging the read information in the sector order required by the higher-level device in the one-rotation recording medium control device, overhead on the higher-level device side can be eliminated.
本実施例では、フレキシブルディスク駆動装置を制御し
ているが、磁気ディスク装置でもよい。In this embodiment, a flexible disk drive is controlled, but a magnetic disk drive may also be used.
本発明によれば、上位装置が指示する複数のセクタを、
上位装置が要求したセクタ順序と無関係に、回転記録媒
体から読み出す際に１回転記録媒体からの読み出し時の
セクタ順序のまま、記憶装置に格納し、上位装置に引き
わたすのと比較し、上位装置が指定した記憶装置に、上
位装置が要求したセクタが要求した順序に読み出しデー
タが格納されるので、上位装置は、読み出し時のセクタ
順序で格納された読み出し情報を、上位装置が要求した
セクタ順序に変換して取り扱う必要がないため、上位装
置のオーバヘッドの増加が抑えられる効果がある。According to the present invention, a plurality of sectors specified by a host device are
Regardless of the sector order requested by the host device, when reading from a rotating recording medium, the host device The read data is stored in the storage device specified by the host device in the order in which the sectors requested by the host device are requested, so the host device stores the read information stored in the sector order at the time of reading in the sector order requested by the host device. Since there is no need to convert and handle the data, it has the effect of suppressing an increase in the overhead of the host device.
第１図は、本発明の一構成例を示すブロック図、第２図
は、本発明の一実施例を示すフロック図である。
１・・・制御部、２・・・読み出し情報転送部、３・・
・回転記録媒体駆動部、４・・・情報転送制御回路、５
・・・マイクロプロセッサ、６・・・フレキシブルディ
スク制御回路。FIG. 1 is a block diagram showing a configuration example of the present invention, and FIG. 2 is a block diagram showing an embodiment of the present invention. 1... Control unit, 2... Read information transfer unit, 3...
- Rotating recording medium drive section, 4... Information transfer control circuit, 5
...Microprocessor, 6...Flexible disk control circuit.
Claims (1)
媒体駆動装置に接続され、上位装置から指示された複数
の固定長セクタを読み出す手段を持つ回転記録媒体読み
出し制御装置において、上位装置が指定した記憶装置の
記憶域に、前記複数セクタの読み出し情報を、上位装置
の指定したセクタ順序で格納する手段を設けたことを特
徴とする回転記録媒体読み出し制御装置。1. In a rotating recording medium read control device that is connected to a storage device and a rotating storage medium drive device managed by a host device and the host device, and has means for reading a plurality of fixed-length sectors instructed by the host device, when the host device specifies 1. A rotating recording medium read control device comprising means for storing read information of the plurality of sectors in a storage area of a storage device in which the read information of the plurality of sectors is stored in a sector order specified by a host device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9208486A JPS62250558A (en) | 1986-04-23 | 1986-04-23 | Read out controller for rotary recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9208486A JPS62250558A (en) | 1986-04-23 | 1986-04-23 | Read out controller for rotary recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62250558A true JPS62250558A (en) | 1987-10-31 |
Family
ID=14044574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9208486A Pending JPS62250558A (en) | 1986-04-23 | 1986-04-23 | Read out controller for rotary recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62250558A (en) |
-
1986
- 1986-04-23 JP JP9208486A patent/JPS62250558A/en active Pending
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