JPH02113899U - - Google Patents
Info
- Publication number
- JPH02113899U JPH02113899U JP2264089U JP2264089U JPH02113899U JP H02113899 U JPH02113899 U JP H02113899U JP 2264089 U JP2264089 U JP 2264089U JP 2264089 U JP2264089 U JP 2264089U JP H02113899 U JPH02113899 U JP H02113899U
- Authority
- JP
- Japan
- Prior art keywords
- rom
- data
- output
- data buffer
- chip select
- 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
Description
第１図はこの考案の一実施例に係るブロツク図
、第２図は従来のＲＯＭ制御回路のブロツク図で
ある。
１……ＲＯＭ、２……システムアドレスバス、
３……チツプセレクト信号、４……アウトプツト
イーブル信号、５……システムデータバス、６…
…システムコントロールバス、７……ゲートコン
トロール信号、８……ゲートコントロール回路、
１１……データバツフア。
FIG. 1 is a block diagram of an embodiment of this invention, and FIG. 2 is a block diagram of a conventional ROM control circuit. 1...ROM, 2...System address bus,
3... Chip select signal, 4... Output enable signal, 5... System data bus, 6...
...System control bus, 7...Gate control signal, 8...Gate control circuit,
11...Data buffer.
Claims (1)
き、ＲＯＭのチツプセレクト信号とアウトプツト
イネーブル信号は常時アクテイブに保ちながら、
ＲＯＭのデータの出力の制御をデータバツフアの
ゲートコントロールにより制御することを特徴と
するＲＯＭの制御装置。 A data buffer is placed in the data output section of the ROM, and the ROM's chip select signal and output enable signal are kept active at all times.
A ROM control device characterized in that output of ROM data is controlled by gate control of a data buffer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2264089U JPH02113899U (en) | 1989-02-28 | 1989-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2264089U JPH02113899U (en) | 1989-02-28 | 1989-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02113899U true JPH02113899U (en) | 1990-09-12 |
Family
ID=31240933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2264089U Pending JPH02113899U (en) | 1989-02-28 | 1989-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02113899U (en) |
-
1989
- 1989-02-28 JP JP2264089U patent/JPH02113899U/ja active Pending