JPS6132435Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Summary] A word consisting of an N-bit data type code and an M-bit data part is transferred from device A to device B at a data transfer speed that exceeds the data processing capacity of device B. , relates to a data input device that stores a data portion in a partial area of a buffer area corresponding to a data type in device B.

[Industrial application field]

The present invention relates to a data input device on the work station side when, for example, data is transferred at high speed from a work station channel to the work station.

[Conventional technology and problems]

For example, work station channel
When data is transferred between the WSC and the work station WS, the data processing capacity of the processor used on the work station WS side
When the data transfer speed between the station channel WSC and the work station WS is faster, data buffering is required on the work station WS side. In addition to ordinary data, the data transferred at this time includes register data and the like, which are used for different purposes by the processors of the work stations. When each of them is transferred in a mixed state, the type code and the data part are stored in the buffer area, and later the processor processes the data while determining the type code. Such a system has the disadvantage that it is necessary to determine the data type of each piece of data after the transfer is completed, and that bits representing the data type must be stored in a buffer.

[Purpose of invention]

In view of the above-mentioned drawbacks, the present invention eliminates the need to determine the data type for each piece of data after data transfer is completed.
The object of the present invention is to provide a data input device that does not require a storage area for bits representing data types.

[Means to achieve the purpose]

Therefore, the data input device of the present invention transfers data from a work station channel to a work station at a data transfer speed that exceeds the data processing capacity of the work station from an N-bit data type code and an M-bit data section. In a system that transfers words, work
The station includes an address determining means having a memory for storing the storage start address and the number of bytes in each memory location, and a word consisting of an N-bit data type code and an M-bit data section is sent from the work station channel. means for reading the storage start address and the number of bytes from the storage location of the memory corresponding to the code when the code is read; and means for storing the data part of the word in the storage location of the buffer area determined by the read storage start address. , the storage start address read from the memory is increased by a unit amount, the number of bytes read from the memory is decreased by a unit amount, and the storage start address is increased by the unit amount and the number of bytes is decreased by the unit amount. and a means for storing the address in the original memory location, and further comprising: a means for storing the address at the original memory location; .

[Example of idea]

The present invention will be described in detail below with reference to the drawings. The drawing is a diagram showing means provided on the device B side in the data processing system of the present invention for determining data types and determining storage addresses for each data type. In the figure, 1 is a register that holds a code and data indicating the data type that are transferred at high speed from the work station channel, and 2 is a means for decoding the code indicating the data type and determining the storage address for each data type. , 3 are buffers that continuously store data for each data type.

Now, work station channel WSC
A case will be described in which data having three types of 2-bit data type codes is transferred from the computer to the work station WS. Work station WS
Prior to data transfer, the side processor sets the storage start address and number of bytes of data of data type . BA and BC are incremented by 1 and -1, respectively, each time one byte is transferred. If data type code "00" is transferred now, BA0 and BC0 are used and stored in buffer area 3. Also, if data type code “01” is transferred, BA1, BC1
is used and stored in buffer area 3.
Next, when data type code "00" is transferred again, BA0 is incremented by +1 and BC0 is incremented by -1, and the data is stored in buffer area 3 following the previous data.

In this manner, after the buffer transfer is completed, the processor on the work station WS side reads the transferred data from the start address of the buffer area, , and processes the data.

[Effect of idea]

As explained above in detail, the data input device of the present invention eliminates the need to perform data processing while determining the data type after data transfer is completed, and eliminates the need for a storage area for bits representing the data type. be effective.

[Brief explanation of the drawing]

The drawings are diagrams for explaining a data input device according to the present invention. 1...Register, 2...Address determining means, 3
...Batsuhua area.

Claims (1)

[Scope of utility model registration claim] Work station
In a system that transfers a word consisting of an N-bit data type code and an M-bit data part from a channel to a work station, the work station has a memory that stores the storage start address and the number of bytes in each memory location. an address determining means having an address determination means; and when a word consisting of an N-bit code indicating the data type and an M-bit data field is sent from the work station channel, the address determination means starts the storage position from the memory location corresponding to the code. means for reading the address and number of bytes; means for storing the data part of the word in a memory location in the buffer area determined by the read storage start address; and means for increasing the storage start address read from the memory by a unit amount; means for decreasing the number of bytes read from the memory by a unit amount and storing the storage start address increased by the unit amount and the number of bytes decreased by the unit amount in the original storage location; A data input device characterized in that the content of the memory of the determining means is configured such that it can be rewritten by a processor on the work station side.