JPS62204358A - Data communication processing system - Google Patents

Data communication processing system

Info

Publication number
JPS62204358A
JPS62204358A JP4664086A JP4664086A JPS62204358A JP S62204358 A JPS62204358 A JP S62204358A JP 4664086 A JP4664086 A JP 4664086A JP 4664086 A JP4664086 A JP 4664086A JP S62204358 A JPS62204358 A JP S62204358A
Authority
JP
Japan
Prior art keywords
data
data communication
communication processing
processing device
buffer
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
JP4664086A
Other languages
Japanese (ja)
Inventor
Takuma Fukuda
福田　琢磨
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP4664086A priority Critical patent/JPS62204358A/en
Publication of JPS62204358A publication Critical patent/JPS62204358A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Bus Control (AREA)
  • Information Transfer Systems (AREA)

Abstract

PURPOSE:To check the normalcy of both transfer and transaction of data by dividing the transfer of data between optional data communication processors into two bus cycles for data transfer and data transfer respectively. CONSTITUTION:The communication processing control part 5 of a data communication processor 9 set at the transmitter side resigns the occupying right of an exclusive bus after the end of data transfer. While the part 5 of the processor 9 at the receiver side transfers the data sent to a reception buffer 3 to a memory 8 via a common bus 6 for the execution of transaction of the data. Then the normalcy is checked for transfer of data to the buffer 3 from a transmission buffer 4 as well as for the transaction of data between the buffer 3 and the memory 8. Thus a status is compiled and a bus arbitration job is carried out for the acquisition of the occupying right for the bus 1. In such a way, the normalcy can be checked for the transfer of data between the buffer 4 and the buffer 3 as well as the transaction of data received from the buffer 3 respectively.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はマルチデータ通信システムに用いられるデータ
通信処理方式に関し、特にデータ転送の正常性のチェッ
クをバスの専有時間を伸ばすことな〈実施するデータ通
信処理方式に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a data communication processing method used in a multi-data communication system, and in particular, to a method for checking the normality of data transfer without extending the bus exclusive time. Regarding data communication processing methods.

〔従来の技術〕[Conventional technology]

従来、この種のデータ通信処理方式としては、第３図に
示すように、送信側データ通信処理装置の送信バッファ
から受信側データ通信処理装置の受信バッファにバスを
介してデータ転送を行った後にバス上の正常性チェック
のみを実施してステータスを返送し、受信側データ通信
処理装置が自装置の受信バッファからメモリへのデータ
引取り時に正しくデータ転送できなかった場合にのみソ
フトウェアによる再転送要求処理を行う方式があった。Conventionally, in this type of data communication processing method, as shown in FIG. Only performs a normality check on the bus and returns the status, and requests retransfer by software only when the receiving side data communication processing device is unable to transfer data correctly when taking data from its own device's receive buffer to memory. There was a method for processing it.

また、第４図に示すように、受信側データ通信処理装置
の受信バッファから自装置のメモリにデータを引き取っ
た後に受信側データ通信処理装置からデータ転送時のス
テータスを送信側データ通信処理装置に返送する方式が
あった。In addition, as shown in Figure 4, after the data is transferred from the reception buffer of the receiving data communication processing device to its own memory, the receiving data communication processing device sends the status at the time of data transfer to the sending data communication processing device. There was a way to send it back.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来のデータ通信処理方式は、第３図に示した
方式では受信バッファからメモリに正しくデータ転送で
きなかった場合に送信側データ通信処理装置と受信側デ
ータ通信処理装置とについてそれぞれソフトウェアによ
る再転送処理を行うので、処理が複雑になる場合が多い
という欠点がある。In the conventional data communication processing method described above, if data cannot be transferred correctly from the reception buffer to the memory using the method shown in FIG. Since transfer processing is performed, the disadvantage is that the processing is often complicated.

また、第４図に示したデータ通信処理方式では、受信側
データｉＩＴ！信処理装置が受信バッファからデータを
引き取る間に送信側データ通信処理装置がステータスの
受信を待ち合わせるので、送信側データ通信処理装置が
バスを専有したままになり、１回のデータ通信処理で長
くバスを専有してしまうという欠点がある。Furthermore, in the data communication processing method shown in FIG. 4, the receiving side data iIT! Since the sending data communication processing device waits for the status to be received while the communication processing device receives data from the reception buffer, the sending data communication processing device remains in exclusive use of the bus, and one data communication process can consume the bus for a long time. The disadvantage is that it becomes exclusive.

本発明の目的は、上述の点に鑑み、送信側データ通信処
理装置のバス専有時間を伸ばすことなく、送信バッファ
から受信バッファへの転送および受信バッファからのデ
ータの引取りの正常性をチェックできるデータ通信処理
方式を提供することにある。In view of the above-mentioned points, an object of the present invention is to be able to check the normality of data transfer from a transmission buffer to a reception buffer and data collection from a reception buffer without increasing the bus exclusive time of the transmission side data communication processing device. The objective is to provide a data communication processing method.

〔問題点を解決するための手段〕[Means for solving problems]

本発明のデータ通信処理方式は、複数のデータ通信処理
装置が専用バスにより接続され任意のデータ通信装置間
でデータ通信動作を行うマルチデータ通信システムにお
いて、送信側データ通信処理装置の送信バッファにデー
タを書き込むデータ書込み手段と、前記送信側データ通
信処理装置に前記専用バスを専有させ前記送信バッファ
内のデータを受信側データ通信処理装置内にある受信バ
ッファに転送しデータ転送終了後に前記専用バスを解放
するデータ転送手段と、前記受信側データ通信処理装置
が前記受信バッファ内のデータを読み取った後に前記受
信側データ通信処理装置に前記専用バスを専有させデー
タ読取り時に正しく読み取れたかエラーを検出したかを
示すステータスを前記送信側データ通信処理装置に返送
した後に前記専用バスを解放するステータス送信手段と
、前記受信側データ通信処理装置が前記ステータスを返
送した後に前記受信側データ通信処理装置に受信動作を
終了させる受信動作終了手段と、前記送信側データ通イ
ε処理装置が前記受信側データ通信処理装置から返送さ
れる前記ステータスを受信した後に前記送信側データ通
信処理装置に送信動作を終了させる送信動作終了手段と
を有する。The data communication processing method of the present invention is applicable to a multi-data communication system in which a plurality of data communication processing devices are connected by a dedicated bus and data communication operations are performed between arbitrary data communication devices. a data writing means for writing data, and having the sending data communication processing device exclusively use the dedicated bus, transferring the data in the sending buffer to a receiving buffer in the receiving data communication processing device, and after completing the data transfer, using the dedicated bus. a data transfer means to be released, and after the receiving data communication processing device reads the data in the reception buffer, the receiving data communication processing device makes the dedicated bus exclusive use of the dedicated bus, and when reading the data, whether the data was read correctly or an error was detected. status transmitting means for releasing the dedicated bus after returning a status indicating a status to the transmitting side data communication processing device; receiving operation terminating means for terminating the transmission operation; and transmission for causing the transmitting side data communication processing device to terminate the transmission operation after the transmitting side data communication processing device receives the status returned from the receiving side data communication processing device. and operation termination means.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図は本発明のデータ通信処理方式の一実施例を適用
するマルチデータ通信システムを示すブロック図である
。このマルチデータ通信システムは、複数のデータ通信
処理装置９が専用バス１を介して互いに接続されている
とともに、共通バス６を介して中央処理袋Ｗ７およびメ
モリ８にそれぞれ接続されて構成されている。FIG. 1 is a block diagram showing a multi-data communication system to which an embodiment of the data communication processing method of the present invention is applied. This multi-data communication system includes a plurality of data communication processing devices 9 connected to each other via a dedicated bus 1 and connected to a central processing bag W7 and a memory 8 via a common bus 6. .

各データ通信処理装置９は、専用バスｌに接続された内
部バス２と、この内部バス２に接続された受信バッファ
３および送信バッファ４と、内部バス２、受信バッファ
３および送信バッファ４にそれぞれ接続され共通バス６
に接続された通信処理制御部５とから構成されている。Each data communication processing device 9 has an internal bus 2 connected to a dedicated bus l, a receive buffer 3 and a transmit buffer 4 connected to this internal bus 2, and an internal bus 2, a receive buffer 3, and a transmit buffer 4, respectively. connected common bus 6
The communication processing control section 5 is connected to the communication processing control section 5.

次に、このように構成された本実施例のデータ　。Next, the data of this example configured in this way.

通（ｇ処理方式の動作について第２図のタイムチャート
を参照しながら説明する。The operation of the G processing method will be explained with reference to the time chart of FIG.

送信側データ通信処理装置９は、中央処理装置７より共
通バス６を介して通信要求命令を起動されると、その通
信処理制御部５が転送データをメモリ８から共通バス６
を介してその送信バッファ４にデータ転送する。When the sending data communication processing device 9 receives a communication request command from the central processing unit 7 via the common bus 6, its communication processing control unit 5 transfers the transfer data from the memory 8 to the common bus 6.
The data is transferred to the transmission buffer 4 via.

送信バッファ４へのデータ転送終了後、送信側データ通
信処理装置９の通信処理制御部５は専用バス１のバス専
を権を得るためにパスアービテーション動作を行う。After the data transfer to the transmission buffer 4 is completed, the communication processing control section 5 of the transmission side data communication processing device 9 performs a path arbitration operation in order to obtain exclusive use of the dedicated bus 1.

送信側データ通信処理装置９の通信処理制御部５は、バ
ス専有後に送信バッファ４から受信側データ通信処理装
置９の受信バッファ３に専用バスｌを介してデータ転送
を行う。After monopolizing the bus, the communication processing control unit 5 of the data communication processing device 9 on the sending side transfers data from the sending buffer 4 to the receiving buffer 3 of the data communication processing device 9 on the receiving side via the dedicated bus 1.

データ転送終了後、送信側データ通信処理装置９の通信
処理制御部５は専用バスｌのバス専有上を放棄させる。After the data transfer is completed, the communication processing control unit 5 of the data communication processing device 9 on the sending side relinquishes exclusive use of the dedicated bus l.

受信側データ通信処理装置９の通信処理制御部５は、受
信バッファ３に転送されたデータを共通バス６を介して
メモリ８にデータ転送してデータの引取りを行った後に
、送信バッファ４から受信バッファ３へのデータ転送お
よび受信バッファ３からメモリ８へのデータの引取りの
正常性をチェックしてステータスを編集し、専用バス１
のバス専有上を得るためにバスアービテーション動作を
行う。The communication processing control unit 5 of the receiving side data communication processing device 9 transfers the data transferred to the receiving buffer 3 to the memory 8 via the common bus 6 and takes over the data, and then transfers the data from the sending buffer 4 to the memory 8. Check the normality of data transfer to receive buffer 3 and data transfer from receive buffer 3 to memory 8, edit the status, and transfer data to dedicated bus 1.
Performs bus arbitration operation to obtain exclusive use of the bus.

受信側データ通信処理装置９の通信処理制御部５は、バ
ス専有後にステータスを専用バス１を介して送信側デー
タ通信処理装置９に返送する。受信側データ通信処理装
置９の通信処理制御部５は、ステータスを返送後にデー
タを受信したことを中央処理装置７に報告し受信動作を
終了させる。The communication processing control unit 5 of the data communication processing device 9 on the receiving side returns the status to the data communication processing device 9 on the transmitting side via the dedicated bus 1 after exclusive use of the bus. After returning the status, the communication processing control unit 5 of the data communication processing device 9 on the receiving side reports to the central processing unit 7 that the data has been received, and ends the receiving operation.

送信側データ通信処理袋Ｗ９の通信処理制御部５は、受
信側データ通信処理装置９からステータスを受信した後
に中央処理装置７に送信完了を報告し送信動作を終了さ
セる。After receiving the status from the receiving data communication processing device 9, the communication processing control unit 5 of the sending data communication processing bag W9 reports the completion of transmission to the central processing unit 7, and ends the sending operation.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、任意のデータ通信処理装
置間のデータ転送をデータ転送とステータス転送との２
つのバスサイクルに分割することにより、送信側データ
通信処理装置のバス専有時間を伸ばすことなく、送信バ
ッフ１から受信バッファへのデータ転送および受信バッ
ファからのデータの引取りの正常性をチェックできる効
果がある。As explained above, the present invention allows data transfer between arbitrary data communication processing devices to be performed in two ways: data transfer and status transfer.
By dividing the bus cycle into two bus cycles, it is possible to check the normality of data transfer from transmission buffer 1 to reception buffer and data collection from reception buffer without extending the bus exclusive time of the transmission side data communication processing device. There is.

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

第１図は本発明の一実施例のデータ通信処理方式を適用
したマルチデータ通信システムを示すブロック図、 第２図は第１図に示したマルチデータ通信システムにお
けるデータ通信転送シーケンスを示すタイムチャート、 第３図は従来のデータ通信処理方式の一例におけるデー
タ転送シーケンスを示すタイムチャート、第４図は従来
のデータ通信処理方式の他の例におけるデータ転送シー
ケンスを示すタイムチャートである。 図において、 ｌ・・・専用バス、 ２・・・内部バス、 ３・・・受信バッファ、 ４・・・送信バッファ、 ５・・・通信処理制御部、 ６・・・共通バス、 ７・・・中央処理装置、 ８・・・メモリ、 ９・・・データ通信処理装置である。 第１図 第２図FIG. 1 is a block diagram showing a multi-data communication system to which a data communication processing method according to an embodiment of the present invention is applied, and FIG. 2 is a time chart showing a data communication transfer sequence in the multi-data communication system shown in FIG. 3 is a time chart showing a data transfer sequence in one example of a conventional data communication processing method, and FIG. 4 is a time chart showing a data transfer sequence in another example of the conventional data communication processing method. In the figure, l... Dedicated bus, 2... Internal bus, 3... Reception buffer, 4... Transmission buffer, 5... Communication processing control unit, 6... Common bus, 7...・Central processing unit, 8...Memory, 9...Data communication processing device. Figure 1 Figure 2

Claims (1)

【特許請求の範囲】 複数のデータ通信処理装置が専用バスにより接続され任
意のデータ通信装置間でデータ通信動作を行うマルチデ
ータ通信システムにおいて、送信側データ通信処理装置
の送信バッファにデータを書き込むデータ書込み手段と
、 前記送信側データ通信処理装置に前記専用バスを専有さ
せ前記送信バッファ内のデータを受信側データ通信処理
装置内にある受信バッファに転送しデータ転送終了後に
前記専用バスを解放するデータ転送手段と、 前記受信側データ通信処理装置が前記受信バッファ内の
データを読み取った後に前記受信側データ通信処理装置
に前記専用バスを専有させデータ読取り時に正しく読み
取れたかエラーを検出したかを示すステータスを前記送
信側データ通信処理装置に返送した後に前記専用バスを
解放するステータス送信手段と、 前記受信側データ通信処理装置が前記ステータスを返送
した後に前記受信側データ通信処理装置に受信動作を終
了させる受信動作終了手段と、前記送信側データ通信処
理装置が前記受信側データ通信処理装置から返送される
前記ステータスを受信した後に前記送信側データ通信処
理装置に送信動作を終了させる送信動作終了手段と、を
有することを特徴とするデータ通信処理方式。[Claims] In a multi-data communication system in which a plurality of data communication processing devices are connected by a dedicated bus and data communication operations are performed between arbitrary data communication devices, data to be written to a transmission buffer of a transmitting data communication processing device. writing means; data for causing the sending data communication processing device to exclusively use the dedicated bus, transferring data in the sending buffer to a receiving buffer in the receiving data communication processing device, and releasing the dedicated bus after data transfer is completed; a transfer means; and a status indicating whether the data communication processing device on the receiving side monopolizes the dedicated bus after the data communication processing device on the receiving side reads the data in the reception buffer, and whether the data was read correctly or an error was detected when reading the data. status sending means for releasing the dedicated bus after returning the status to the sending data communication processing device; and causing the receiving data communication processing device to end the receiving operation after the receiving data communication processing device returns the status. a receiving operation terminating means; a transmitting operation terminating means for causing the transmitting data communication processing device to end the transmitting operation after the transmitting data communication processing device receives the status returned from the receiving data communication processing device; A data communication processing method characterized by having the following.
JP4664086A 1986-03-04 1986-03-04 Data communication processing system Pending JPS62204358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4664086A JPS62204358A (en) 1986-03-04 1986-03-04 Data communication processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4664086A JPS62204358A (en) 1986-03-04 1986-03-04 Data communication processing system

Publications (1)

Publication Number Publication Date
JPS62204358A true JPS62204358A (en) 1987-09-09

Family

ID=12752901

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4664086A Pending JPS62204358A (en) 1986-03-04 1986-03-04 Data communication processing system

Country Status (1)

Country Link
JP (1) JPS62204358A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02110746A (en) * 1988-10-20 1990-04-23 Hitachi Ltd Adapter tester
JPH04326448A (en) * 1991-04-26 1992-11-16 Nec Corp Fault processing system for packet bus system
JP2006313479A (en) * 2005-05-09 2006-11-16 Toshiba Corp Semiconductor integrated circuit device and data transfer method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02110746A (en) * 1988-10-20 1990-04-23 Hitachi Ltd Adapter tester
JPH04326448A (en) * 1991-04-26 1992-11-16 Nec Corp Fault processing system for packet bus system
JP2006313479A (en) * 2005-05-09 2006-11-16 Toshiba Corp Semiconductor integrated circuit device and data transfer method

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