JPS608990U - Microcomputer system with ROM for character generation - Google Patents
Microcomputer system with ROM for character generationInfo
- Publication number
- JPS608990U JPS608990U JP10025083U JP10025083U JPS608990U JP S608990 U JPS608990 U JP S608990U JP 10025083 U JP10025083 U JP 10025083U JP 10025083 U JP10025083 U JP 10025083U JP S608990 U JPS608990 U JP S608990U
- Authority
- JP
- Japan
- Prior art keywords
- rom
- character generation
- microcomputer system
- address bus
- address
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は文字発生用ＲＯＭにアドレスをセットする従来
回路の回路図、第２図、第３図はそれぞれ、そのフロー
チャートとタイミングチャート、第４図は本考案の一実
施例の回路−、第５図、第６図はそれぞれ、そのフロー
チャートとタイミングチャートである。
１；文字発生用ＲＯＭ、２；デコーダ、３；アドレスバ
ス、Ａｏ、 Ａ□・・・・・・、 Ａ１３；アドレスデ
ータ入力端子、ＡＥ；アドレスイネーブル信号入力端子
。
第３図
第４図FIG. 1 is a circuit diagram of a conventional circuit for setting an address in a character generation ROM, FIGS. 2 and 3 are a flowchart and a timing chart thereof, respectively, and FIG. 4 is a circuit diagram of an embodiment of the present invention. 5 and 6 are a flowchart and a timing chart, respectively. 1: Character generation ROM, 2: Decoder, 3: Address bus, Ao, A□..., A13: Address data input terminal, AE: Address enable signal input terminal. Figure 3 Figure 4
Claims (1)
ムにおいて、文字発生用ＲＯＭのアドレスデータ入力端
子がアドレスバスに接続され、アドレスバス上のアドレ
スデータを文字発生用ＲＯＭに入力するイネーブル信号
がアドレスバスの残りのパスラインを介して入力するこ
とを特徴とする文字発生用ＲＯＭを有するマイクロコン
ピュータシステム。In a microcomputer system having a character generation ROM, the address data input terminal of the character generation ROM is connected to an address bus, and an enable signal for inputting address data on the address bus to the character generation ROM is connected to the remaining path of the address bus. A microcomputer system having a ROM for character generation characterized by input via a line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10025083U JPS608990U (en) | 1983-06-30 | 1983-06-30 | Microcomputer system with ROM for character generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10025083U JPS608990U (en) | 1983-06-30 | 1983-06-30 | Microcomputer system with ROM for character generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS608990U true JPS608990U (en) | 1985-01-22 |
Family
ID=30237239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10025083U Pending JPS608990U (en) | 1983-06-30 | 1983-06-30 | Microcomputer system with ROM for character generation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS608990U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5391640A (en) * | 1976-12-22 | 1978-08-11 | Ncr Co | Computer output data process intensifying system |
| JPS56143049A (en) * | 1980-04-04 | 1981-11-07 | Komatsu Ltd | Output circuit |
| JPS56153363A (en) * | 1980-04-30 | 1981-11-27 | Fujitsu Ltd | Crt display control system |
| JPS5868151A (en) * | 1981-10-16 | 1983-04-22 | Matsushita Electric Ind Co Ltd | Digital to analog conversion system |
-
1983
- 1983-06-30 JP JP10025083U patent/JPS608990U/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5391640A (en) * | 1976-12-22 | 1978-08-11 | Ncr Co | Computer output data process intensifying system |
| JPS56143049A (en) * | 1980-04-04 | 1981-11-07 | Komatsu Ltd | Output circuit |
| JPS56153363A (en) * | 1980-04-30 | 1981-11-27 | Fujitsu Ltd | Crt display control system |
| JPS5868151A (en) * | 1981-10-16 | 1983-04-22 | Matsushita Electric Ind Co Ltd | Digital to analog conversion system |
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