JPS5860398U - Memory protect signal generator - Google Patents
Memory protect signal generatorInfo
- Publication number
- JPS5860398U JPS5860398U JP15284681U JP15284681U JPS5860398U JP S5860398 U JPS5860398 U JP S5860398U JP 15284681 U JP15284681 U JP 15284681U JP 15284681 U JP15284681 U JP 15284681U JP S5860398 U JPS5860398 U JP S5860398U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- protect signal
- signal generator
- memory protect
- specific digit
- 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
Landscapes
- Storage Device Security (AREA)
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図は本考案の一実施例のブロック図、第２図はメモ
リ空間の説明図である。
１・・・コンパレータ、２．３・・・ラッチ回路。FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a memory space. 1... Comparator, 2.3... Latch circuit.
Claims (1)
回路と、このアドレス信号の特定桁の特定ビットを指定
する情報を記憶し、前記第１のアンド回路の他の入力へ
出力する第１のラッチ回路と、この特定桁のアドレスの
レベルを指定する情報を記憶する第２のラッチ回路と、
前記第１およ・び第２のラッチ回路の論理積出力を発す
る第２のアンド回路と、前記第１のアンド回路と第２の
アンド回路の出力を比較し一致をとりプロテクト信号を
発するコンパレータとを備えることを特徴とするメモリ
プロテクト信号発生装置。a first AND circuit that receives a specific digit of the address signal as one input, and a first AND circuit that stores information specifying a specific bit of the specific digit of the address signal and outputs it to the other input of the first AND circuit. a second latch circuit that stores information specifying the level of the address of this specific digit;
a second AND circuit that generates an AND output of the first and second latch circuits, and a comparator that compares the outputs of the first AND circuit and the second AND circuit, finds a match, and generates a protect signal. A memory protect signal generating device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15284681U JPS5860398U (en) | 1981-10-16 | 1981-10-16 | Memory protect signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15284681U JPS5860398U (en) | 1981-10-16 | 1981-10-16 | Memory protect signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5860398U true JPS5860398U (en) | 1983-04-23 |
Family
ID=29945484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15284681U Pending JPS5860398U (en) | 1981-10-16 | 1981-10-16 | Memory protect signal generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5860398U (en) |
-
1981
- 1981-10-16 JP JP15284681U patent/JPS5860398U/en active Pending
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