JP3005518B2 - Floppy disk drive model switching method - Google Patents
Floppy disk drive model switching methodInfo
- Publication number
- JP3005518B2 JP3005518B2 JP10087710A JP8771098A JP3005518B2 JP 3005518 B2 JP3005518 B2 JP 3005518B2 JP 10087710 A JP10087710 A JP 10087710A JP 8771098 A JP8771098 A JP 8771098A JP 3005518 B2 JP3005518 B2 JP 3005518B2
- Authority
- JP
- Japan
- Prior art keywords
- floppy disk
- fdd
- disk drive
- model switching
- switching
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、フロッピーディ
スクドライブ（以下、ＦＤＤと略称する）の機種切替方
式に関する。[0001] 1. Field of the Invention [0002] The present invention relates to a method of switching the type of a floppy disk drive (hereinafter abbreviated as FDD).
【０００２】[0002]
【従来の技術】従来のＦＤＤにおいて、同一ＰＷＢで複
数のインターフェース（以下、Ｉ／Ｆと証する）仕様を
実現するため、大規模集積回路（以下、ＬＳＩと略称す
る）〜Ｉ／Ｆ間の接続及びＬＳＩ動作モード設定の変更
を、チップ抵抗の打ち替えで対応し仕様を切り替えてい
た。2. Description of the Related Art In a conventional FDD, a connection between a large-scale integrated circuit (hereinafter abbreviated as LSI) to an I / F is required in order to realize a plurality of interfaces (hereinafter referred to as I / Fs) using the same PWB. In addition, the specification has been changed in response to the change of the LSI operation mode setting by changing the chip resistance.
【０００３】図２に従来の機種切替回路を示す。従来の
機種切替回路においては、符号１のＦＤＤ Ｉ／Ｆ〜符
号３のＦＤＤコントロールＬＳＩ間の接続変更等を符号
２のＩ／Ｆ接続切替用ジャンパにて行なっていた。その
ため、機種切替時には、モード設定用抵抗４の打ちかえ
と共に、Ｉ／Ｆ接続切替用ジャンパ２もあわせて変更し
なければならなかった。FIG. 2 shows a conventional model switching circuit. In the conventional model switching circuit, the connection between the FDD I / F of reference numeral 1 and the FDD control LSI of reference numeral 3 is changed by the I / F connection switching jumper of reference numeral 2. Therefore, when the model is switched, the jumper 2 for switching the I / F connection must be changed together with the replacement of the mode setting resistor 4.
【０００４】[0004]
【発明が解決しようとする課題】そのため、上述の方法
ではプリント配線板（以下、ＰＷＢと略称する）に実装
されるチップの数が非常に多くコスト面（資材／製造）
で不利になるという問題点があり、その解決策が課題と
なっていた。Therefore, in the above-described method, the number of chips mounted on a printed wiring board (hereinafter abbreviated as PWB) is very large, and cost (material / manufacturing) is high.
There was a problem that it was disadvantageous, and the solution was an issue.
【０００５】本発明はこのような背景の下になされたも
ので、ＦＤＤの機種切替においてＬＳＩ〜Ｉ／Ｆ間等の
接続変更までをＬＳＩで制御するもので、Ｉ／Ｆ入出力
ピンごとにＬＳＩのピンを割り当て、そのＬＳＩのモー
ド設定ピンを切り替えることにより、指定された仕様に
設定することができるフロッピーディスクドライブの機
種切替方式を提供することを目的とする。The present invention has been made in view of such a background. In switching the type of FDD, the LSI controls the connection change between the LSI and the I / F using an LSI. It is an object of the present invention to provide a floppy disk drive model switching method capable of setting a specified specification by allocating pins of an LSI and switching a mode setting pin of the LSI.
【０００６】[0006]
【課題を解決するための手段】請求項１に記載の発明
は、インターフェースの入出力ピン毎にフロッピーディ
スクコントロール回路のピンを割り当て、このフロッピ
ーディスクコントロール回路のモード設定ピンを切り替
えることによりコントロール回路自身の動作モードと、
インターフェース入出力接続の双方を一度に設定できる
ことを特徴とするフロッピーディスクドライブの機種切
替方式を提供する。According to a first aspect of the present invention, a pin of a floppy disk control circuit is assigned to each input / output pin of an interface, and the control circuit itself is switched by switching a mode setting pin of the floppy disk control circuit. Operating mode and
A type switching method for a floppy disk drive, characterized in that both interface input / output connections can be set at once .
【０００７】また請求項２に記載の発明は、前記フロッ
ピーディスクコントロール回路が、大規模集積回路であ
ることを特徴とする請求項１に記載のフロッピーディス
クコントロール回路の機種切替方式を提供する。According to a second aspect of the present invention, there is provided the floppy disk control circuit according to the first aspect, wherein the floppy disk control circuit is a large-scale integrated circuit.
【０００８】[0008]
【発明の実施の形態】以下、この発明の一実施形態につ
いて図を参照しながら説明する。図１はこの発明の一実
施形態によるフロッピーディスクドライブの機種切替方
式の構成を示すブロック図である。この図において、符
号５はＦＤＤ Ｉ／Ｆであり、入出力信号ごとにＦＤＤ
コントロールＬＳＩ６のピンを割り当て、モード設定用
抵抗７の打ちかえで、ＦＤＤコントロールＬＳＩに内蔵
されたＭｏｄｅ ｓｅｌｅｃｔｏｒ８とＩ／Ｆ ｓｅｌｅ
ｃｔｏｒ９によってＬＳＩモード変更とＦＤＤ Ｉ／Ｆ
ピン仕様の変更を一括して行うものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a model switching system of a floppy disk drive according to an embodiment of the present invention. In this figure, reference numeral 5 denotes an FDD I / F, and an FDD I / F
By assigning the pins of the control LSI 6 and replacing the mode setting resistor 7 with the mode selector 8 and the mode selector 8 built in the FDD control LSI,
LSI mode change and FDD I / F
The change of the pin specification is performed collectively.
【０００９】本発明の機種切替回路は、ＦＤＤ Ｉ／Ｆ
５に接続されたＦＤＤコントロールＬＳＩ６と、このＦ
ＤＤコントロールＬＳＩ６のモードを切り替えるモード
設定用抵抗７を有し、前記ＦＤＤコントロールＬＳＩ６
に内蔵され、前記モード設定用抵抗７の打ちかえで切り
替わるＬＳＩ内部モード切替手段（Ｍｏｄｅ ｓｅｌｅ
ｃｔｏｒ）８と、Ｉ／Ｆ信号切替手段（Ｉ／Ｆ ｓｅｌ
ｅｃｔｏｒ）９を有している。The model switching circuit according to the present invention comprises an FDD I / F
5 and an FDD control LSI 6 connected to
A mode setting resistor for switching the mode of the DD control LSI;
LSI internal mode switching means (Mode cell) which is built-in and is switched by switching the mode setting resistor 7
ctor) 8 and I / F signal switching means (I / F sel)
ector) 9.
【００１０】次に本発明のＦＤＤの機種切替回路の動作
について説明する。本発明の機種切替回路は、複数のＦ
ＤＤ電気的仕様を簡単な変更で実現することが出来る。
すなわち、ＦＤＤコントロールＬＳＩ６に接続されてい
るモード設定用抵抗７を打ちかえることにより前記ＦＤ
ＤコントロールＬＳＩ６に内蔵されたＭｏｄｅｓｅｌｅ
ｃｔｏｒ８とＩ／Ｆ ｓｅｌｅｃｔｏｒ９を操作し、所
定のＦＤＤ動作モード及びＩ／Ｆ信号線を選択し、ＦＤ
Ｄ電気的仕様を切り替えるものである。Next, the operation of the FDD model switching circuit of the present invention will be described. The model switching circuit of the present invention includes a plurality of F
DD electrical specifications can be realized with simple changes.
That is, by changing over the mode setting resistor 7 connected to the FDD control LSI 6, the FD
Modesel built in D control LSI6
FD8 and the I / F selector 9 are operated to select a predetermined FDD operation mode and an I / F signal line.
D This is for switching electrical specifications.
【００１１】以上、本発明の一実施形態の動作を図面を
参照して詳述してきたが、本発明はこの実施形態に限ら
れるものではなく、本発明の要旨を逸脱しない範囲の設
計変更等があっても本発明に含まれる。The operation of one embodiment of the present invention has been described in detail with reference to the drawings. However, the present invention is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. The present invention is also included in the present invention.
【００１２】[0012]
【発明の効果】これまでに説明したように、この発明の
機種切替回路によれば、ＦＤＤ Ｉ／Ｆ〜ＦＤＤコント
ロールＬＳＩ間をダイレクトに接続できるため回路構成
が非常にシンプルになり、また、モード設定抵抗を打ち
かえることにより容易に機種変更が可能となる。以上か
ら、コスト的に有利であることはもちろん、部品点数削
減による信頼性向上が期待できるという効果が得られ
る。As described above, according to the model switching circuit of the present invention, since the FDD I / F to the FDD control LSI can be directly connected, the circuit configuration becomes very simple, By changing the set resistance, the model can be easily changed. From the above, it is possible to obtain the effect that the reliability can be improved by reducing the number of parts as well as being advantageous in cost.
【図１】 本発明の一実施形態によるフロッピーディス
クドライブの機種切替方式の構成を示すブロック図であ
る。FIG. 1 is a block diagram showing a configuration of a model switching system of a floppy disk drive according to an embodiment of the present invention.
【図２】 従来の技術によるフロッピーディスクドライ
ブの機種切替方式の構成を示すブロック図である。FIG. 2 is a block diagram showing a configuration of a model switching method of a floppy disk drive according to a conventional technique.
１ ＦＤＤ Ｉ／Ｆ ２ Ｉ／Ｆ切替用ジャンパ ３ ＦＤＤコントロールＬＳＩ ４ モード設定用抵抗 ５ ＦＤＤ Ｉ／Ｆ ６ ＦＤＤコントロールＬＳＩ ７ モード設定用抵抗 ８ Ｍｏｄｅ ｓｅｌｅｃｔｏｒ ９ Ｉ／Ｆ ｓｅｌｅｃｔｏｒ REFERENCE SIGNS LIST 1 FDD I / F 2 I / F switching jumper 3 FDD control LSI 4 Mode setting resistor 5 FDD I / F 6 FDD control LSI 7 Mode setting resistor 8 Mode selector 9 I / F selector
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G06F 3/06 G11B 33/12 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) G06F 3/06 G11B 33/12
Claims (2)
ッピーディスクコントロール回路のピンを割り当て、こ
のフロッピーディスクコントロール回路のモード設定ピ
ンを切り替えることによりコントロール回路自身の動作
モードと、インターフェース入出力接続の双方を一度に
設定できることを特徴とするフロッピーディスクドライ
ブの機種切替方式。 An operation of the control circuit itself is performed by allocating a pin of a floppy disk control circuit to each input / output pin of the interface and switching a mode setting pin of the floppy disk control circuit.
Mode and interface I / O connections at once
Floppy disk drive model switching method characterized by being configurable .
路は、大規模集積回路であることを特徴とする請求項１
に記載のフロッピーディスクドライブの機種切替方式。2. The floppy disk control circuit according to claim 1, wherein said floppy disk control circuit is a large-scale integrated circuit.
Model switching method of the floppy disk drive described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10087710A JP3005518B2 (en) | 1998-03-31 | 1998-03-31 | Floppy disk drive model switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10087710A JP3005518B2 (en) | 1998-03-31 | 1998-03-31 | Floppy disk drive model switching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11288583A JPH11288583A (en) | 1999-10-19 |
| JP3005518B2 true JP3005518B2 (en) | 2000-01-31 |
Family
ID=13922476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10087710A Expired - Fee Related JP3005518B2 (en) | 1998-03-31 | 1998-03-31 | Floppy disk drive model switching method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3005518B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014013168A (en) * | 2012-07-04 | 2014-01-23 | Daiwa House Industry Co Ltd | Manufacturing method and device for test piece of structural concrete |
-
1998
- 1998-03-31 JP JP10087710A patent/JP3005518B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014013168A (en) * | 2012-07-04 | 2014-01-23 | Daiwa House Industry Co Ltd | Manufacturing method and device for test piece of structural concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11288583A (en) | 1999-10-19 |
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