JPS6020258A - Input/output instruction converting system - Google Patents

Abstract

PURPOSE:To run an input/output instruction which generates from programs of different concepts by installing a converter of input/output is struction between a processor in input/output processor. CONSTITUTION:When the converter 100 receives an input/output instruction from the processor 800, said instruction is converted to the input/output instruction which is fitted to the input/output processor 200 and the execution of input/output instruction is indicated to the input/output processor 200. The input/output processor 200 is started by this execution instruction and controls input/output movement according to the converted intput/output instruction. Status report words generated as a results of this input/output movement are informed to the converter 100. The converter 100 changes the status report words to the form which can be processed by the processor 800, and reports the converted status report words to the processor 800.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an input/output processing system that transfers data according to input/output instructions from a processor, and in particular, to an input/output processing system that transfers data according to input/output instructions from a processor. This invention relates to an input/output instruction conversion method for converting into output instructions.

Conventional technology Conventionally, in this type of input/output processing system.

The input/output instructions issued by the processor device are fixed in a certain format, or some of the functions have been modified to expand the format, and the operating system program is created with a different design concept. Also, there was a drawback that it was not possible to execute input/output commands issued from the user program and the user program. There is a drawback that it is not possible to connect directly to the output processing device, or even if it is possible to connect it, the amount of hardware is required to be a multiple of the number of operating systems that are to coexist.

Furthermore, as recent input/output devices tend to be faster, the TRANSFERIN CI of input/output instructions issued from operating system programs and user programs
(The frequency of occurrence of the ANNEL command is a factor that causes data transfer overruns.

Therefore, the frequency of occurrence of the TRANSFERIN CHANNEL command determines the success/failure of data transfer, which has the disadvantage that it is not an optimal input/output command for the input/output processing system.

Purpose of the Invention The purpose of the present invention is to convert input/output commands created with different design concepts into unified input/output commands, and to convert unified status report words into status report words created with different design concepts. By placing the device between the processor unit and the input/output processing unit.

It is an object of the present invention to provide an input/output processing system that eliminates the above-mentioned conventional drawbacks and allows input/output commands generated by programs and user programs to run within the same central processing unit.

Another object of the present invention is to provide an input/output processing system in which gross equipment created with different design concepts within the same central processing unit is directly connected to a system that increases the amount of hardware with an extremely small amount. It's about doing.

Yet another object of the present invention is to convert input/output instructions issued by operating system programs and user programs.

There are almost no TRANSFERIN CHANNEL commands.

It is an object of the present invention to provide an input/output processing system in which overruns occur at a very low frequency, even if they occur, and in which overruns occur at a very low frequency.

DESCRIPTION OF THE INVENTION According to the present invention, an input/output processing system that transfers data in accordance with input/output commands from devices includes a conversion device and an input/output processing device.

When the conversion device receives an input/output instruction from the processor device, the conversion device converts the input/output instruction into an input/output instruction that matches the input/output processing device, and executes the converted input/output instruction to the input/output instruction. the input/output processing device reports a status report word of this execution instruction to the conversion device, and the conversion device converts the status report word into a format that can be processed by the processor device; An input/output instruction conversion method is obtained which is characterized in that the converted status report word is reported to the processor device.

Examples of this invention Next, the present invention will be explained in detail with reference to the drawings.

Referring to FIG. 1, there is shown a configuration of an input/output processing system according to an embodiment of the present invention. Processor device 80
0 is the first arithmetic device 500. Second arithmetic device 600.
Main storage device 700. and a system control device 400, including a first arithmetic device 500. Second arithmetic device 600
．． and the main storage device 700 are connected to signal lines 9, 08 and 90, respectively.
9. and 910 are connected to the system control device 400. The conversion device 100 has signal lines 90/I to 90
The input/output processing device 200 is connected to the system control device 400 by a signal line 902, and the input/output shared memory 300 is connected to the input/output shared memory 300 by a signal line 901. The controller 400 is connected to the input/output shared memory by a signal line 903, respectively.

Describing the configuration of the converter 100 according to the present invention in more detail with reference to FIG. 2, signal lines 904, 905, and 906 connect the system controller 400 and
arithmetic unit interface circuit 140. Second arithmetic unit interface circuit 150 and main memory access circuit 1
60 are connected. The conversion circuit 120 connects the signal line 9
21 by the first arithmetic unit interface circuit 140
The signal a922 connects the second arithmetic unit interface circuit 150, the signal line 923 connects the main memory access circuit 160, the signal line 920 connects the input/output shared memory access circuit 110, and the signal line 924 connects the input/output processing unit interface circuit. 130, respectively. In addition, the input/output shared memory 3 is connected to the signal line 901.
00 and the input/output shared memory access circuit 110 are connected.

The input/output processing device 200 and the input/output processing device interface circuit 130 are connected by a signal m902.

Next, the operation of this embodiment will be explained with reference to FIGS. 1 and 2.

The first arithmetic device 500 and the second arithmetic device 600 are designed with different stage-based concepts, and have different methods for starting input/output instructions.
The format of the data transfer control word, the method of reporting the results of input/output command processing, and the format of the status report word are each different. When the conversion device 100 is instructed to execute an input/output command from the different first arithmetic device 500 or second arithmetic device 600, the instruction to execute the input/output command is sent to the signal line 908 or the signal line 909. System controller 40 via
0 and is notified to the first arithmetic unit interface circuit 140 via the signal line 904 or to the second arithmetic unit interface circuit 150 via the signal line 905. The first arithmetic unit interface circuit 140 or the second arithmetic unit interface circuit 1 to which the input/output command execution instruction has been notified
50 instructs the conversion circuit 120 to convert input/output instructions via a signal line 921 or 922.

The conversion circuit 120 instructed to perform the conversion process stores the main storage device 7
In order to read the address control word for obtaining the channel address, device address, data transfer control word address, etc. from the predetermined address of 00, the main memory access circuit 160 is sent to the main memory access circuit 160 via the signal line 923. Give instructions. Main memory 906, main memory access circuit 160. and is sent to the conversion circuit 120 via the signal line 923.

The conversion circuit 120 converts the read address control word into an address control word that matches the input/output processing device 200, and sends the converted address control word to the input/output shared memory access circuit 110 via the signal line 920. is written to the input/output shared memory 300.

Next, the conversion circuit 120 similarly reads the data transfer control word from the main storage device 700 according to the data transfer control word address included in the read address control word, and transfers the data in accordance with the input/output processing device 200. Convert it into a control word and write it to the input/output shared memo IJ 300. However, the read data transfer control word is TRANSFERIN CH.
If it is an ANNEL command, the conversion circuit 120 does not convert or write to the input/output shared memory 300, but reads the data transfer control word using the data transfer control word address included in the data transfer control word and converts it. and writes it to the input/output shared memory 300. Conversion of data transfer control word is data transfer fl? The process continues when the data transfer end flag in the U word is detected.

Next, the conversion device 100 instructs the input/output processing device 200 to start up along with the address control word address via the signal line 902 during or after the conversion of the data transfer control word. The input/output processing device 200 that has been instructed to start starts data transfer using the converted address control word and the converted data transfer control word from the input/output shared memory 300 via the signal line 903.

Next, the input/output processing device 200 stores the status report word as a processing result of the input/output command in a predetermined address of the input/output shared memory 300 via the signal line 90:3, and then stores it via the signal line 902. An interrupt is generated in the conversion device 100.

When the interrupt occurs, the conversion device 100 transmits the signal line 9'01.
The status report word stored in the input/output shared memory 300 is read out via the input/output shared memory 300, and the read status report word is transmitted to the first arithmetic unit 500 or the second arithmetic unit 6 that issued the input/output command.
After converting into a status report word compatible with 00, the first arithmetic unit 5
00 or according to a report processing method compatible with the second computing device 600.

The result of the input/output command is reported to the processor device 800 via the signal line 904 or the signal #J905 and the signal m906.

Effects of the Invention As explained above, the present invention has a configuration in which an input/output instruction conversion device is provided between a processor unit and an input/output processing unit, thereby allowing different operating systems to be used within the same central processing unit. It enables the execution of input/output commands that occur frequently in system programs and user programs, and allows processor devices created with different design concepts within the same central processing unit to be easily processed by increasing the amount of hardware with an extremely small amount. It can be constructed so that it can be directly connected to the system, and furthermore, it has an input/output instruction format that is optimal for the input/output processing system, so it has the effect of providing an input/output processing system with extremely low overrun frequency.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 2 is a block diagram showing the configuration of the converting device shown in FIG. 1 in more detail. 100... Conversion device, 11o... Output shared memory access circuit, 120... Conversion circuit, 13o... Input/output processing device interface circuit, 14o... First arithmetic device interface circuit, 15o... Second arithmetic unit interface circuit, 1Go...main memory access circuit,
20o... Input/output processing device, 300... Input/output common memo IJ, 400... System control device. 500...First arithmetic unit, 600...Second arithmetic unit, 70o...Main storage device, 8'OO...Process, unit ft, 9ox-924...Interface signal line.

Claims (1)

[Claims] 1. In an input/output processing system that transfers data according to an input/output command from a gross device. It has a conversion device and an input/output processing device, and the conversion device includes:
When receiving an input/output instruction from the processor device, it converts the input/output instruction into an input/output instruction that matches the input/output processing device, and instructs the input/output processing device to execute the converted input/output instruction. , the input/output processing device is activated by the execution instruction. The converting device controls an input/output operation according to the converted input/output command, and reports a status report word as a result of execution of the input/output operation to the converting device. An input/output instruction conversion method characterized by converting the status report word into a format that can be processed by the processor device, and reporting the converted status report word to the processor device.