JPS6010349U

JPS6010349U - memory sharing device

Info

Publication number: JPS6010349U
Application number: JP9899883U
Authority: JP
Inventors: 松本　春生
Original assignee: 株式会社明電舎
Priority date: 1983-06-27
Filing date: 1983-06-27
Publication date: 1985-01-24

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

[Brief explanation of drawings]

第１図は本考案の一実施例を示すブロック構成図、第２
図は第１図におけるマイクロプロセッサ１．２間の結合
回路の一実施例を示す回路図、第３図は第２図における
リクエスト信号と確認応答信号の関係を示すタイムチャ
ートである。１．２・・・・・・マイクロプロセッサ、３・・・・・
・ランダムアクセスメモリ、４１，４□、　　５．、　
５□、７□。７□・・・・・・バッファ、８，９・・・・・・Ｄ型フ
リップフロップ。Fig. 1 is a block diagram showing one embodiment of the present invention;
This figure is a circuit diagram showing an embodiment of the coupling circuit between the microprocessors 1 and 2 in FIG. 1, and FIG. 3 is a time chart showing the relationship between the request signal and the acknowledgment signal in FIG. 2. 1.2...Microprocessor, 3...
・Random access memory, 41,4□, 5. ,
5□, 7□. 7□...Buffer, 8,9...D type flip-flop.

Claims

[Scope of utility model registration request]

When the random access memory is shared and used by two microprocessors, the memory and the two microprocessors are coupled via buffers in a data bus, an address bus, and a read/write control bus, respectively; One of the two microprocessors mentioned above is set as the mask side and the other as the slave side, and the slave side microprocessor gives a memory use request signal to the mask side microprocessor, and the acknowledgment signal from the mask side microprocessor in response to this request signal. 1. A memory sharing device comprising: a coupling circuit for providing a slave microprocessor with a buffer and enabling said buffer to operate to couple between said processor and said memory.