JPS6424443U - - Google Patents
Info
- Publication number
- JPS6424443U JPS6424443U JP11840287U JP11840287U JPS6424443U JP S6424443 U JPS6424443 U JP S6424443U JP 11840287 U JP11840287 U JP 11840287U JP 11840287 U JP11840287 U JP 11840287U JP S6424443 U JPS6424443 U JP S6424443U
- Authority
- JP
- Japan
- Prior art keywords
- keyboard
- control program
- program
- internal rom
- initial
- 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
- 238000010586 diagram Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 1
Landscapes
- Input From Keyboards Or The Like (AREA)
Description
第１図は本発明の一実施例のキーボードを示す
回路ブロツク図、第２図は第１図中に示した内部
ＲＯＭに格納されたコントロールプログラムを例
示する概念図、第３図は第２図に示したコントロ
ールプログラムの処理の流れを示す流れ図である
。
図において、１…マイクロコンピユータ、２…
４×１６デコーダ、３…キーマトリツクス、４…
インタフエース回路、５…上位装置接続コネクタ
、６…使用モード設定回路、１１…内部ＲＯＭ、
１２…内部ＲＯＭ・外部ＲＯＭ切換用端子、２１
…初期設定ルーチン、２２…メインルーチン、２
３，２５…イニシヤルプログラムへの強制ジヤン
プ命令、２４，２６…サブルーチン、２７…イニ
シヤルプログラムである。
FIG. 1 is a circuit block diagram showing a keyboard according to an embodiment of the present invention, FIG. 2 is a conceptual diagram illustrating a control program stored in the internal ROM shown in FIG. 1, and FIG. 3 is a flowchart showing the flow of processing of the control program shown in FIG. In the figure, 1... microcomputer, 2...
4×16 decoder, 3...key matrix, 4...
Interface circuit, 5... Host device connection connector, 6... Usage mode setting circuit, 11... Internal ROM,
12...Internal ROM/external ROM switching terminal, 21
...Initial setting routine, 22...Main routine, 2
3, 25...forced jump instruction to the initial program, 24, 26...subroutine, 27...initial program.
Claims (1)
マイクロコンピユータによつて制御されるキーボ
ードにおいて、 このキーボードのコントロールプログラムがフ
アームウエアで作成されている前記内部ＲＯＭと
、 前記コントロールプログラム内に含まれスタツ
クポインタおよびＲＡＭを初期化して前記コント
ロールプログラムを正常動作に戻すイニシヤルプ
ログラムと、 前記コントロールプログラム内のメインルーチ
ンの終わりやサブルーチンの終わりなどの通常の
プログラムの切れ目の次に設けられた前記イニシ
ヤルプログラムへの強制ジヤンプ命令と、 を有することを特徴とするキーボード。[Claims for Utility Model Registration] A keyboard controlled by a microcomputer having a terminal for switching between an internal ROM and an external ROM, comprising: the internal ROM in which a control program for the keyboard is created using firmware; An initial program included in the control program that initializes the stack pointer and RAM to return the control program to normal operation; and a normal program break after the end of the main routine or subroutine in the control program. A keyboard comprising: a forced jump instruction to the initial program provided in the keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11840287U JPS6424443U (en) | 1987-07-31 | 1987-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11840287U JPS6424443U (en) | 1987-07-31 | 1987-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6424443U true JPS6424443U (en) | 1989-02-09 |
Family
ID=31362730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11840287U Pending JPS6424443U (en) | 1987-07-31 | 1987-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6424443U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58219633A (en) * | 1982-06-14 | 1983-12-21 | Alps Electric Co Ltd | Keyboard with encoder using microcomputer |
| JPS6252638A (en) * | 1985-08-31 | 1987-03-07 | Mitsubishi Motors Corp | Device for preventing run away of vehicle control computer |
-
1987
- 1987-07-31 JP JP11840287U patent/JPS6424443U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58219633A (en) * | 1982-06-14 | 1983-12-21 | Alps Electric Co Ltd | Keyboard with encoder using microcomputer |
| JPS6252638A (en) * | 1985-08-31 | 1987-03-07 | Mitsubishi Motors Corp | Device for preventing run away of vehicle control computer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6424443U (en) | ||
| JPH0168531U (en) | ||
| JPS60187434U (en) | Multi-contact lever switch | |
| JPS621260U (en) | ||
| JPS62169831U (en) | ||
| JPS6246953U (en) | ||
| JPS6271703U (en) | ||
| JPH0344720U (en) | ||
| JPS6275362U (en) | ||
| JPS60174050U (en) | circuit breaker | |
| JPS6415062U (en) | ||
| JPH0345143U (en) | ||
| JPS58171754U (en) | Intermittent wiper with memory | |
| JPH025840U (en) | ||
| JPS61201104U (en) | ||
| JPS6262355U (en) | ||
| JPH02133022U (en) | ||
| JPS6171930U (en) | ||
| JPH0164733U (en) | ||
| JPS63184489U (en) | ||
| JPS62109321U (en) | ||
| JPS63142765U (en) | ||
| JPH0184147U (en) | ||
| JPS61120138U (en) | ||
| JPS60142453U (en) | switch |