JPH0455U - - Google Patents
Info
- Publication number
- JPH0455U JPH0455U JP3849190U JP3849190U JPH0455U JP H0455 U JPH0455 U JP H0455U JP 3849190 U JP3849190 U JP 3849190U JP 3849190 U JP3849190 U JP 3849190U JP H0455 U JPH0455 U JP H0455U
- Authority
- JP
- Japan
- Prior art keywords
- main
- bus
- sub
- data
- processing unit
- 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
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Multi Processors (AREA)
- Information Transfer Systems (AREA)
- Communication Control (AREA)
Description
第１図は本考案の一実施例に係るデータ送受信
装置を備えたコンピユータ通信システムのブロツ
ク図、第２図ａは実施例におけるデータ送信方式
を示すフローチヤート、第２図ｂは同実施例にお
けるデータ受信方式のフローチヤート、第３図は
従来例におけるデータ送信方式を示すフローチヤ
ートである。
５……シリアル通信線、７……メインＣＰＵ、
９……メインメモリ、１１……サブＣＰＵ、１２
……双方向ＲＡＭ、１３……シリアル通信インタ
フエイス。
FIG. 1 is a block diagram of a computer communication system equipped with a data transmitting/receiving device according to an embodiment of the present invention, FIG. 2a is a flowchart showing a data transmission method in the embodiment, and FIG. Flowchart of data reception method. FIG. 3 is a flowchart showing a data transmission method in a conventional example. 5... Serial communication line, 7... Main CPU,
9...Main memory, 11...Sub CPU, 12
...Bidirectional RAM, 13...Serial communication interface.
Claims (1)
中央処理装置及びメインバスを介してそれに接続
されるメインメモリを備えたメインコンピユータ
装置に付属されるデータ送受信装置であつて、 前記メインバスに対し並列配置されるサブバス
を有し、 前記メインバスと前記サブバスとの間に両バス
から入力されるデータを記憶すると共に両バスに
対して記憶データを出力できる双方向ＲＡＭを設
け、 前記サブバスに、他のコンピユータ装置との間
でデータ送受信する通信インタフエイスを設け、 前記サブバスに、前記メインバスから前期双方
向ＲＡＭに送られてきたデータを前記他のコンピ
ユータ装置に送信すると共に、他のコンピユータ
装置から前記双方向ＲＡＭに送られてきたデータ
を前記メインバスから前記メインメモリへ受信す
るよう前記メイン中央処理装置に指令するサブ中
央処理装置を備えたことを特徴とするデータ送受
信装置。[Claims for Utility Model Registration] A data transmitting/receiving device attached to a main computer device comprising a main central processing unit operated by an operating system and a main memory connected thereto via a main bus, A bi-directional RAM is provided between the main bus and the sub-bus, which is capable of storing data input from both buses and outputting stored data to both buses; The sub-bus is provided with a communication interface for transmitting and receiving data with other computer devices, and the sub-bus is configured to transmit data sent from the main bus to the bidirectional RAM to the other computer device, and to transmit data sent from the main bus to the bidirectional RAM. A data transmitting/receiving device comprising a sub-central processing unit that instructs the main central processing unit to receive data sent from the computer device to the bidirectional RAM from the main bus to the main memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3849190U JPH0455U (en) | 1990-04-12 | 1990-04-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3849190U JPH0455U (en) | 1990-04-12 | 1990-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0455U true JPH0455U (en) | 1992-01-06 |
Family
ID=31546544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3849190U Pending JPH0455U (en) | 1990-04-12 | 1990-04-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63255759A (en) * | 1987-04-14 | 1988-10-24 | Mitsubishi Electric Corp | Control system |
-
1990
- 1990-04-12 JP JP3849190U patent/JPH0455U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63255759A (en) * | 1987-04-14 | 1988-10-24 | Mitsubishi Electric Corp | Control system |
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