JPH03224078A - Interface device - Google Patents

Abstract

PURPOSE:To perform data processing for a data packet holding data with arbitrary number of words by generating an input data packet from information supplied from an external data processor, inputting it to a data packet processor, and outputting the information held by an output data packet to the external data processor. CONSTITUTION:Tag information and data value information with arbitrary number of words supplied from the external data processor are stored in an input data packet storage means 2, and the input data packet is generated from the information, then, it is inputted to the data packet processor. Meanwhile, when the data packet supplied from the data packet processor is stored in an output data packet storage means 10, an output control means 11 stores the number of words of the output data packet by updating a value at every update of one word of data value, and informs the fact to the external data processor in advance. The external data processor receives data value information from the output data packet storage means 10. Thereby, the data packet holding the data value information with arbitrary number of words can be processed.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a data packet processing device that processes data packets including tag information and data value information of an arbitrary number of words, and a data processing device that processes data. This relates to an interface device that performs input and output between

(b) Prior art In recent years, data packet processing devices such as data-driven computers that process data consisting of tags and data, such as data-driven computers, have been developed. Data processing systems that are controlled using devices are being constructed.

In order to operate such a system efficiently, it is important to consider how to configure an interface device for mutually converting the 7-ohm-soto data exchanged between the data packet processing device and the external data processing device. One factor is that the present invention relates to the configuration of such an interface device.

Conventional interface devices include, for example, JP-A-64
As described in No. 21539, a data packet generated by a tag generated by providing tag information from an external data processing device to a tag generation unit and data provided from the external data processing device is a data packet. (Input to the external data processing device, as well as decomposing the output data packet output from the data packet processing device into tags and data, and handshaking with the external data processing device.) There is something to output.

In such a conventional interface device, a single data value can be stored in each data packet input to the data packet processing device. Similarly, a single data value can be stored in one data packet for output data packets from the data packet processing device.

(c) Problems to be solved by the invention Recent data packet processing devices adopt a data packet configuration that holds a single tag and multiple pieces of data when the same process is applied to multiple pieces of data. This makes it possible to efficiently process data even with data packets containing an arbitrary number of data.

However, the conventional interface device used when connecting this data packet processing device with an external data processing device to systematize the Only a single data value can be stored, and similarly, only a single data value can be stored in one data packet for the output data packet from the data packet processing device.

In other words, since it was not possible to input and output data packets with an arbitrary number of words with conventional interface devices, this interface device allows data packet processing devices to input and output data packets with a single tag. This was a cause of interference with data processing for retained data packets.

The present invention has been made to solve such problems, and provides an interface device compatible with a data packet processing device that can realize data processing on data packets holding data of an arbitrary number of words. .

(d) Means for Solving the Problems The interface device of the present invention stores tag information and data value information of an arbitrary number of words constituting an input data packet to be input from an external data processing device to a data packet processing device. input data packet storage means; input control means for controlling the input of input data packets of the data packet storage means to a data packet processing device; and tag information and a data value of an arbitrary number of words output from the data packet processing device. It consists of an output data packet storage means for storing output data packets holding information, and an output control means for controlling output of the information of the output data packets to an external data processing device.

Furthermore, the input data packet storage means includes tag information storage means and overnight value information storage means,
After inputting data value information of an arbitrary number of words input from the external data processing device into the data value information storage means,
receiving tag information and control information from the external data processing device, storing the tag information in the tag information storage means, and generating an input data packet based on the tag information and the data value information in accordance with the control information; It is input to the data packet processing device.

Further, the input control means includes an input word count storage means, and stores input word count information given from the external data processing device in the input word count storage means, and also stores input word count information given from the external data processing device in the input word count storage device, and responds to input data packets input to the data packet processing device. The input word number storage means updates the value of the input word number storage means, and the input of the input data packet to the data packet processing device is completed in accordance with the value of the input word number storage means.

Further, the output control means includes an output word number storage means, and stores the number of words of the output data packet by updating the value of the output word number storage means according to the output of the output data packet from the data packet processing device. At the same time, the value of the output word number storage means is updated according to the output of the information held by the output data packet to the external data processing device, and the value of the output word number storage means is updated according to the value of the output word number storage means. This ends the output of the information held by the output data packet to the output data packet.

Further, the information held in the output data packet is outputted to the external data processing device in accordance with the output of the output data packet from the data packet processing device. After outputting the specific word count and the value of the output iiW number storage means to the external data processing device, in response to receiving control information indicating an output request from the external data processing device, the output data packet is retained. The remaining information is output.

(E) Operation According to the interface device of the present invention, information constituting an input data packet given from an external data processing device is stored in the input data packet storage means, and input from the information stored in the input data packet storage means is performed. A data packet is generated and input to the data packet processing device, and information held in the output data packet stored in the output data packet storage means is output to the external data processing device.

Furthermore, according to the interface device of the present invention,
Data value information of an input data packet provided from an external data processing device is stored in data value information storage means within the input data packet storage means. Subsequently, tag information of the input data packet, the number of words of the data value, and control information indicating the input of the data packet are given from the external data processing device, and the tag information is stored in the tag information storage means in the input data packet storage means. The number of words of the value is stored in the input word number storage means in the input control stage, and an input data packet is generated from the tag information and data value information according to the control information and input to the data packet processing device. At this time,
Each time the data value information of the input data packet is input to the data packet processing device, the value of the input word count storage means is updated;
When this reaches a certain value, input ends. In this way, it is possible to input data packets having data value information of any number of words.

Further, output data packets from the data packet processing device are stored in the output data packet storage means. At this time, the output word number storage means stores the number of words of the output data packet by updating the value every time one word is stored.

The tag information and data value information of the output data packet stored in the output data packet storage means are output to the external data processing device in the following manner. First, by outputting the specific number of words in the output data packet and the value of the output word number storage means to the external data processing device, the external data processing device is requested to output and is notified of the number of output words. The remaining information of the output data packet is output to the external data processing device by providing control information indicating a reception request from the external data processing device that received this. At this time, the value of the output word number storage means is updated every time one word is taken out from the output packet storage means, and when this reaches a specific value, the output ends. In this way, it is possible to output data packets with arbitrary data value information.

(F) Embodiment FIG. 1 shows the basic configuration of an interface device of the present invention. In the figure, 2 is an input data packet (consisting of tag information and data value information of an arbitrary number of words) for inputting from an external data processing device to the data packet processing device.
It is an input data packet storage means for storing, and functionally consists of a tag information storage means 2T and a data information storage means 2D. Reference numeral 3 denotes an input control means for controlling the input of input data packets of the data packet storage means 2 to the data packet processing device, and includes an input word number storage means 31. Reference numeral 10 denotes an output data packet storage means for storing an output data packet outputted from the data packet processing device and holding tag information and data value information of an arbitrary number of words. Reference numeral 13 denotes an output control means for controlling output of the information of the output data packet to an external data processing device, and includes an output word number storage means 131.

Such a device of the present invention stores tag information and data value information of an arbitrary number of words constituting an input data packet given from an external data processing device in the input data packet storage means 2.
An input data packet is generated from the information stored in the input data packet storage means 2, and then input to the data packet processing device. Specifically, when generating this input data packet, in addition to tag information of the input data packet and data value information of an arbitrary number of words, the number of words of this data value and other control information are given from the external data processing device. The tag information is stored in the tag information storage means 2T in the input data packet storage means 2, the data value information is stored in the data value information storage means 2B, and the number of words of the data value constituting the control information is the number of input words in the input control means 3. The input data packets are stored in the storage means 31, and input data packets are generated from the tag information and data value information in accordance with the control information.

On the other hand, the data packet given from the data packet processing device is stored in the output data packet storage means ]O,
The information held in this output data packet is output to an external data processing device. Specifically, when the output data packet from the data packet processing device is stored in the output data packet storage means, the output word number storage means 131 of the output control means 13 updates the value every time one data value word is stored. stores the number of words in the output data packet.

The number of words stored in the output word number storage means 131 is notified in advance to the external data processing device, and the external data processing device receives data value information of the notified number of words from the output data packet storage means 8.

FIG. 2 is a concrete configuration diagram of one embodiment of the interface device of the present invention.

As shown in FIG. 3, the data packet handled by the data packet processing device shown in the figure has a first tag, a second tag,
and the first to nth data values, one word is each assigned to the first tag [tag 1] and the second tag [tag 2], and each data value [data value 1 (upper)] and [Data value 1 (lower)] to [Data value n (upper) and [Data value n
(lower)] are assigned two words each, a total of 2n words. Furthermore, the bit allocation format of this data packet is 16 bits of data from 0th to 15th bits and 16.17
It is made up of a 2-bit flag.

The 17th bit flag indicates the existence of a data packet,
The 16th bit flag indicates the beginning and end of the data packet.

First, the configuration and operation of the interface device for inputting data from the external data processing device ODP to the data packet processing device in the packet format shown in FIG. 3 will be explained.

Data including data value information is input into the register 1 by handshaking with the external data processing device ODP. The format of the data at this time is shown in FIG. As shown in the figure, following the [control information] of the first word, flags and data values are alternately input from the second word.

The input control means 3 identifies the control information and writes the flag and data into the input data buffer 211 of the data value information storage means 21 of the input data packet storage means 2. Note that writing/reading of the input data buffer 211 is performed by the operations of the data register 212, flag register 213, write pointer 214, read pointer 215, and pointer selection section 216.

When writing to the input data buffer 211, the most significant bit when the flag is input indicates the end of the input data, and writing continues until this becomes 1''.

When data writing is completed in this way, the external data processing device ODP subsequently sends [control information 1], [tag information 1], [tag information 2], [data value word count information] as shown in FIG. ], [Control information 2], and enter the five-word information. Among these pieces of information, [tag information 1 and 2] are stored in tag information registers 221 and 222, respectively.

Further, [data value word number information] is the 2' complement of the data value stored in the input data packet, and this value is stored in the input word number storage means 31 of the input control means 3.

In this way, with the data and information necessary for the data packet as shown in FIG. 3 prepared in the interface device, the data as shown in FIG. Generate a packet. That is, the input control means 3 reads the tag information stored in the tag registers 221 and 222, the data values and flags sequentially read from the input data buffer 211 and stored in the data register 212 according to the control information 1 and 2. An input data packet is generated based on the flag stored in the register 213. The data selection unit 23 sequentially reads these data and information according to the packet format shown in FIG. 3, and inputs them to the data packet processing device in response to a request from the data packet processing device DPP. At this time, the input control signal generation section 32 increments the value of the input word number storage means 31 every time a data value is read from the input data buffer 211, and continues inputting data packets until this value becomes "0". That is, when this value becomes O'', input control is performed to end data input.

Next, the configuration and operation of the interface device for outputting data packets as shown in FIG. 3 from the data packet processing device DPP will be explained.

The data packet output from the data packet processing device DPP is written to the output data buffer ]01 via the data register 8 and the flag register 9. Note that writing/reading of the output data buffer 101 is as follows:
This depends on the operations of the data register 105, flag register 106, write pointer 102, read pointer 103, and pointer selection unit 104.

When writing to the output data buffer 101, each time one word is written, the output word number storage means 111 of the output control means 11
Increment the value of . And output control means 11
determines that the end of the data packet has been stored in the output data buffer 101 based on the flag of the data packet. This determination is made by a control signal from the output control signal generation section 112 which checks the value of the output word count storage means 111.

In this way, all data packets are sent to the output data buffer 101.
Once the data is stored in the external data processing device ODP, the next step is to create a data format suitable for the external data processing device ODP.

That is, first, the data selection section 12 selects the output word number storage means 1]
Select the value 1 [Number of words of output data packet], and then select the 4-word data sequentially taken from the output data buffer 101, [Tag 1] and [Tag 2], and [Data value 1 (upper)].
] and [Data value 1 (lower)].

These data groups have a format as shown in FIG. 6 with a specific number of words, in this case five words, and are output as a primary data group to the external data processing device ODP.

The external data processing device ODP, which has received such a primary data group, can determine the number of unreceived words from the [number of words in the output data packet], so it first sends [control information] indicating a request to output the remaining data. The input is in the form of a specific number of words (5 words) as shown in Figure 6. This input is determined by the input control means, and according to this, the output control means 11 selects the [data M2 (upper)] stored in the output data buffer 101 based on the [control information] included in this output request.
The subsequent data values are output to the external data processing device ODP. At this time, each time the output data buffer 101 is read, the value of the output word count storage means 111 is decremented, and data output to the external data processing device OGP is continued until this value becomes O'', as shown in FIG. Output of secondary data of consecutive multiple words including [data value 2 (upper)] to [data value n (lower)] is executed.

(G) Effects of the Invention As explained above, according to the interface device of the present invention, it is possible to input data packets holding data value information of any number of words to the data packet processing device, and , it becomes possible to output data packet information outputted from a data packet processing device and holding data value information of an arbitrary number of words to an external data processing device. That is, the interface device of the present invention:
It can function as an interface device for a data packet processing device that processes data packets holding data value information of an arbitrary number of words.

[Brief explanation of drawings]

FIG. 1 is a basic configuration diagram of an interface device of the present invention, FIG. 2 is a configuration diagram of an embodiment of the present invention, and FIGS.
The figure is a schematic diagram showing the data format handled by the device of the present invention. DESCRIPTION OF SYMBOLS 1... Input register, 2... Input data value information storage means, 21... Data value information storage means, 211... Input data buffer,
212... Input data register, 213... Input flag register, 214... Input data buffer write pointer, 215... Input data buffer read pointer, 216... Input data buffer pointer selection section, 22.・Tag information storage means, 221.222・
...tag register, 23...output data selection unit, 3...input control means, 31...input word number storage means,
32... Input control signal generation unit, 4... Input data packet (data), 5... Input data packet (flag), 6... Output data packet (data), 7... Output data packet ( flag), 8... Output data register, 9... Output flag register, 10... Output data packet storage means, 101... Output data buffer sofa, 102... Output data buffer write pointer, 103... - Output data buffer read pointer, ]04... Output data buffer pointer selection section, 105... Data register, 106...
Flag register, 11... Output control means, 111... Output word number storage means, 112... Output control signal generation section, 14... Output data selection section.

Claims (5)

[Claims] (1) Provided between a data packet processing device that processes data packets containing data value information and data value information of an arbitrary number of words and an external data processing device that performs data processing, realizing data input and output between both devices. an input data packet storage means for storing tag information and data value information of an arbitrary number of words constituting an input data packet to be input from the external data processing device to the data packet processing device; an input control means for controlling the input of the input data packet of the packet storage means to the data packet processing device; an input control means for controlling input of the input data packet of the packet storage means to the data packet processing device; an output data packet storage means for storing an output data packet; and an output control means for controlling output of information of the output data packet to an external data processing device; generating an input data packet from the information stored in the input data packet storage means and inputting it to the data packet processing device, and retaining the output data packet stored in the output data packet storage means; An interface device characterized in that the interface device outputs information on the external data processing device to the external data processing device. (2) The input data packet storage means includes a tag information storage means and a data value information storage means, and the data value information of an arbitrary number of words inputted from the external data processing device is stored in the data value information storage means. receive tag information and control information from the external data processing device;
A claim characterized in that the tag information is stored in the tag information storage means, and an input data packet is generated based on the tag information and the data value information according to the control information, and is input to the data packet processing device. The interface device according to item 1. (3) The input control means includes an input word count storage means, and stores the input word count information given from the external data processing device in the input word count storage means, and also controls input data packets to be input to the data packet processing device. 2. The method according to claim 1, wherein the value of the input word number storage means is updated accordingly, and the input of the input data packet to the data packet processing device is terminated according to the value of the input word number storage means. The interface device described. (4) The output control means includes an output word number storage means, and stores the number of words of the output data packet by updating the value of the output word number storage means according to the output of the output data packet from the data packet processing device. At the same time, the value of the output word count storage means is updated according to the output of the information held by the output data packet to the external data processing device, and the external data processing is performed according to the value of the output word count storage means. 4. The interface device according to claim 1, 2, or 3, wherein the output of the information held by the output data packet to the device is terminated. (5) The output of the information held by the output data packet to the external data processing device is based on the output of the output data packet from the data packet processing device. After outputting the specific word count of information and the value of the output word count storage means to the external data processing device, the output data packet is retained in response to receiving control information indicating an output request from the external data processing device. 5. The interface device according to claim 1, 2, 3, or 4, wherein the remaining information contained in the interface device is output.