JPS60237556A - Data transfer control system - Google Patents

Data transfer control system

Info

Publication number
JPS60237556A
JPS60237556A JP59092194A JP9219484A JPS60237556A JP S60237556 A JPS60237556 A JP S60237556A JP 59092194 A JP59092194 A JP 59092194A JP 9219484 A JP9219484 A JP 9219484A JP S60237556 A JPS60237556 A JP S60237556A
Authority
JP
Japan
Prior art keywords
input
data
channel device
command
processing device
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
Application number
JP59092194A
Other languages
Japanese (ja)
Inventor
Yoshio Sato
佐藤 佳生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Fuji Facom Corp
Original Assignee
Fujitsu Ltd
Fuji Facom Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd, Fuji Facom Corp filed Critical Fujitsu Ltd
Priority to JP59092194A priority Critical patent/JPS60237556A/en
Publication of JPS60237556A publication Critical patent/JPS60237556A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/10Program control for peripheral devices
    • G06F13/12Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
    • G06F13/122Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware performs an I/O function other than control of data transfer

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To prevent an omission of data transfer by generating an input request command after generating a read command to a channel device through the execution of an application program when data is read, and then holding the system in a wait state. CONSTITUTION:Input data D from a tablet device 1 is transferred, byte by byte, to the data area of the memory 16 at the side of a processor 7. The counter 10 of the channel device 3 counts the reception of the input data D and sends an end signal (e) to a control part 9. Then, the control part 9 sends input end information E to the processor 7. An input data transfer request from the side of the processor 7 to the tablet device 1 is made through the execution of the application program 8 and the read command R is sent to the channel device firstly. Then when an input request command I is sent from the processor 7, the channel device 3 sends an input request command I' from a transmission/reception part 11 to the tablet device 1.

Description

【発明の詳細な説明】 (a) 発明の技術分野 本発明は、データ入力装置と処理装置とが回線で結ばれ
たシステムにおけるデータ転送制御方式缶)従来技術と
問題点 図形等を入力するタブレット装置が通信回線を介して処
理装置に結ばれ、図形等のデータがセンタで処理される
ケースが多くなっている。このようなシステム構成にお
いては、通常、処理装置と通信回線との間には、受信用
の回線バッファが設けられ、タブレット装置からのデー
タは、この回線バッファに蓄えられたのち、処理用デー
タ領域(主記憶装置)へ転送されるが、この転送制御は
チャネル装置によって行われる。すなわち処理装置から
チャネル装置に対する読出指令により、データの転送制
御が行われ、才だ処理装置からタブレット装置に対し入
力要求指令を発することにより、タブレット装置から入
力データ(図形等の座標データ他)の送出が行われる。
Detailed Description of the Invention (a) Technical Field of the Invention The present invention relates to a data transfer control system in a system in which a data input device and a processing device are connected by a line. In many cases, devices are connected to processing devices via communication lines, and data such as graphics is processed at the center. In such a system configuration, a receiving line buffer is usually provided between the processing device and the communication line, and data from the tablet device is stored in this line buffer and then transferred to the processing data area. (main memory), and this transfer control is performed by the channel device. In other words, data transfer is controlled by a read command from the processing device to the channel device, and input data (coordinate data of figures, etc.) is read from the tablet device by issuing an input request command from the processing device to the tablet device. Sending is performed.

このようなシステムにおいて、従来方式では、処理装置
がチャネル装置に対し、タブレット装置への入力要求指
令を発したのち夕待ち状態とし、その後に読取指釈換・
1 言すれば回線バッファ内の受信データの処理用データ領
域への転送指令)を発していたので、回線バッファから
処理用データ領域へのデータ転送の際、データの転送洩
れを生ずる欠点があった。
In such a system, in the conventional method, the processing device issues a command to the channel device to request input to the tablet device, enters a waiting state, and then performs reading/transfer/transfer.
1 In other words, since the command to transfer the received data in the line buffer to the processing data area was issued, there was a drawback that data transfer was omitted when transferring data from the line buffer to the processing data area. .

(c) 発明の目的 本発明は上記の欠点を解決するためになされたもので、
データの転送制御を容易とするデータ転送制御方式の提
供を目的とする。
(c) Purpose of the invention The present invention has been made to solve the above-mentioned drawbacks.
The purpose of this invention is to provide a data transfer control method that facilitates data transfer control.

(d) 発明の構成 本発明は、処理装置に結ばれたチャネル装置と、入力装
置とが回線で結ばれ、処理装置からの入力要求に応じて
入力装置からの入力データが所定単位で処理装置へ送出
されるシステムにおいて、前記チャネル装置を介して前
記入力装置に入力データの送出を要求する入力要求命令
及び前記チャネル装置に対し前記入力データの転送を要
求する読取命令を発する手段孝を前記処理装置に設け、
前記処理装置は前記読取命令に引続いて前記入力要求命
令を前記チャネル装置に発し、該チャネル装置は、前記
入力要求命令に基いて前記入力装置に入力データの送出
を要求し、且つ該送出されてきた入力データを前記読取
命令に基いて前記処理装置へ転送せしめることを特徴と
するデータ転送制御方式である。以上のように本発明は
、入力装置からデータ読取の際、チャネル装置に対し、
応用プログラムの実行により、先ず読取コマンドを発し
たのち、直ちに入力要求コマンドを発せしめ、然るのに
待ち(WA I T )状態に入らせることにより、入
力装置からのデータ転送洩れの防止を図ったものである
(d) Structure of the Invention In the present invention, a channel device connected to a processing device and an input device are connected by a line, and input data from the input device is transmitted to the processing device in predetermined units in response to an input request from the processing device. In the system, the processing includes means for issuing an input request command for requesting the input data to be sent to the input device via the channel device and a read command for requesting the transfer of the input data to the channel device. provided in the device,
The processing device issues the input request command to the channel device following the read command, and the channel device requests the input device to send input data based on the input request command, and requests the input data to be sent out. This data transfer control method is characterized in that the received input data is transferred to the processing device based on the read command. As described above, the present invention provides a channel device with the following information when reading data from an input device:
When the application program is executed, it first issues a read command, then immediately issues an input request command, and then enters a wait (WAIT) state to prevent data from being transferred from the input device. It is something that

(e) 発明の実施例 以下、本発明を図面によって説明する。図面は本発明の
一実施例を説明するブロック図である。
(e) Examples of the invention The present invention will be explained below with reference to the drawings. The drawing is a block diagram illustrating an embodiment of the present invention.

図面におけるタブレット装置lは、通信回線2によって
チャネル装置3に結ばれている。タブレット装置1はチ
ャネル装置3から入力要求コマンド1/を受ける毎に所
定単位のデータD(7バイト)を送出する。このデータ
Dはスタイラス4をタブレット5に触れることによりレ
ジスタ6にセット転送要求は、アプリケージ1ンプログ
ラム8の実行により行われるが、先ず読取指令Rが、チ
ャネル装置3へ送られる。これを受けたチャネル装置3
0制御部9は、カウンタ10を稼動可能な状態(スタン
バイ)とする。次に処理装置7から入力要求指令Iが発
せられるとチャネル装置3は、3バイトのデータからな
る入力要求コiンドエ′を、送受信部11からタブレッ
ト装置1へと送出する。
A tablet device l in the drawing is connected to a channel device 3 by a communication line 2. Each time the tablet device 1 receives an input request command 1/ from the channel device 3, it sends out a predetermined unit of data D (7 bytes). This data D is set in the register 6 by touching the stylus 4 with the tablet 5, and a transfer request is made by executing the application program 8. First, a read command R is sent to the channel device 3. Channel device 3 that received this
0 control unit 9 puts the counter 10 into an operable state (standby). Next, when an input request command I is issued from the processing device 7, the channel device 3 sends an input request command I consisting of 3 bytes of data from the transmitting/receiving section 11 to the tablet device 1.

これを受けたタブレット装置10制御部12は、レジス
タ6内の入力データD(7バイト)を送受信部13へ送
る。送受信部13は、この入力データDを直列データに
変換したのち、これを通信回il!2へ送出する。チャ
ネル装置3において、送受信部11で受信された入力デ
ータDは、変換部14によって直列データに変換された
のち、バッファ15に格納される。バッファ15は容量
1バイトのバッファであり、従りて入力データDはバイ
ト単位で、処理装置7側のメモリ16のデータ領域17
へ転送される。チャネル装置3のカウンタ10は7進の
カウンタであり、入力データDの受信、すなわち7バイ
トのデータの受信を計数すると、終了信号eを制御部9
へ通知する。これに伴い制御部9は、入力終了情報Eを
処理装置7へ通知する。なおメモリ16のアプリケ−シ
ーンプルグラム8内のWlは入力要求指令Iに対するW
AITマクロ命令であり、またwmは読取指令Rに対す
るWA I T ffクロ命令である。従来方法では、
処理装置7からチャネル装置3に対し、入力要求指令I
を発したのち、WAITマクロ命令W!によりて待ち状
態とし、次に読取指令Rを発してWA I Tマクp命
令WRによりて待ち状態とする方法が採られていた。こ
の従来方法では、入力要求命令工によ、る入力要求コマ
ンドl′により、直ちにタブレット装置1から入力デー
タDが送出されてくるので、次憂こ読取指令Rによりチ
ャネル装置3がバッファ15内のデータの転送を開始し
ようとする時点では、バッファ15内に格納済みのデー
タが後続のデータにより更新されて消滅してし才う欠点
かあリ、本発明はこれを解決したものである。
Upon receiving this, the control unit 12 of the tablet device 10 sends the input data D (7 bytes) in the register 6 to the transmitting/receiving unit 13 . The transmitting/receiving unit 13 converts this input data D into serial data, and then transmits it to the communication circuit il! Send to 2. In the channel device 3 , the input data D received by the transmitter/receiver 11 is converted into serial data by the converter 14 and then stored in the buffer 15 . The buffer 15 has a capacity of 1 byte, and therefore the input data D is stored in the data area 17 of the memory 16 on the processing device 7 side in byte units.
will be forwarded to. The counter 10 of the channel device 3 is a hexadecimal counter, and when it counts the reception of the input data D, that is, the reception of 7 bytes of data, the end signal e is sent to the control unit 9.
Notify. Along with this, the control unit 9 notifies the processing device 7 of input end information E. Note that Wl in the application scene program 8 of the memory 16 is W for the input request command I.
This is the AIT macro instruction, and wm is the WA I T ff macro instruction for the read command R. In the conventional method,
An input request command I is sent from the processing device 7 to the channel device 3.
After issuing the WAIT macro command W! A method has been adopted in which a read command R is issued and a WAIT Mcp command WR is issued to enter a wait state. In this conventional method, the input data D is immediately sent from the tablet device 1 in response to the input request command l' sent by the input request command operator, so that the channel device 3 reads the data in the buffer 15 in response to the next read command R. The present invention solves the disadvantage that the data already stored in the buffer 15 is updated by subsequent data and disappears when data transfer is to be started.

(f) 発明の効果 以上のように本発明は、タブレット装置と処理装置とが
回線で結ばれたシステムにおけるデータ入力を確実とじ
つる利点を有する。
(f) Effects of the Invention As described above, the present invention has the advantage of reliably inputting data in a system in which a tablet device and a processing device are connected by a line.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の一実施例を説明するブロック図であり、
図中に用いた符号は次の通りである。 1はタブレット装置、2は通信回線、3はチャネル装置
、4はスタイラス、5はタブレット、6はレジスタ、7
は処理装置、8はアプリケージ。 ンプログラム、9.12は制御部、10はカウンタ(7
進)、11.13は送受信部、14は変換部。 15はバッファ、16はメモリ、17はデータ領域、D
は入力データ、Eは終了情報、Iは入力要求指令、工′
は入力要求コマンド、Rは読取指令。 wx、wRはWAITマクロ命令、 eは終了信号を示
す。
The drawing is a block diagram illustrating an embodiment of the present invention,
The symbols used in the figure are as follows. 1 is a tablet device, 2 is a communication line, 3 is a channel device, 4 is a stylus, 5 is a tablet, 6 is a register, 7
is a processing unit, and 8 is an application cage. 9.12 is the control section, 10 is the counter (7.
11.13 is a transmitting/receiving section, and 14 is a converting section. 15 is a buffer, 16 is a memory, 17 is a data area, D
is input data, E is end information, I is input request command, work'
is an input request command, and R is a read command. wx and wR are WAIT macro instructions, and e is an end signal.

Claims (1)

【特許請求の範囲】[Claims] 処理装置に結ばれたチャネル装置と、入力装置とが回線
で結ばれ、処理装置からの入力要求に応じて、入力装置
からの入力データが所定単位で処理装置へ送出されるシ
ステムにおいて、前記チャネル装置を介して前記入力装
置に対し入力データの送出を要求する入力要求命令及び
前記チャネル装置に対し前記入力データの転送を要求す
る読取命令を発する手段を前記処理装置に設け、前記処
理装置は前記読取命令に引続いて前記入力要求命令を前
記チャネル装置に発し、該チャネル装置は、前記入力要
求命令に基いて前記入力装置に入力データの送出を要求
し、且つ咳送出されてきた入力データを前記読取命令に
基いて前記処理装置へ転送せしめることを特徴とするデ
ータ転送制御方式。
In a system in which a channel device connected to a processing device and an input device are connected by a line, and input data from the input device is sent to the processing device in predetermined units in response to an input request from the processing device, the channel device is The processing device is provided with means for issuing an input request instruction for requesting the input device to send input data via the device and a read instruction for requesting the channel device to transfer the input data, and the processing device Following the read command, the input request command is issued to the channel device, and the channel device requests the input device to send input data based on the input request command, and also sends the input data that has been sent. A data transfer control method characterized in that the data is transferred to the processing device based on the read command.
JP59092194A 1984-05-09 1984-05-09 Data transfer control system Pending JPS60237556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59092194A JPS60237556A (en) 1984-05-09 1984-05-09 Data transfer control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59092194A JPS60237556A (en) 1984-05-09 1984-05-09 Data transfer control system

Publications (1)

Publication Number Publication Date
JPS60237556A true JPS60237556A (en) 1985-11-26

Family

ID=14047633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59092194A Pending JPS60237556A (en) 1984-05-09 1984-05-09 Data transfer control system

Country Status (1)

Country Link
JP (1) JPS60237556A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55121520A (en) * 1979-03-12 1980-09-18 Hitachi Ltd Input-output control system
JPS56168254A (en) * 1980-05-29 1981-12-24 Fujitsu Ltd Advance control system for input/output control unit
JPS5730014A (en) * 1980-07-30 1982-02-18 Fujitsu Ltd Input and output system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55121520A (en) * 1979-03-12 1980-09-18 Hitachi Ltd Input-output control system
JPS56168254A (en) * 1980-05-29 1981-12-24 Fujitsu Ltd Advance control system for input/output control unit
JPS5730014A (en) * 1980-07-30 1982-02-18 Fujitsu Ltd Input and output system

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