JPH04101265A - System for controlling input-output between information processing device - Google Patents

Abstract

PURPOSE:To improve the control throughput of the title system by making an information processing device to accept a data inputting, outputting, or transferring request after reading the content of the status input register of the processing device upon receiving an interrupt signal. CONSTITUTION:An interrupt generation circuit 14 generates an interrupt signal in accordance with the content of a sent status and outputs the interrupt signal to a central processing unit (CPU) 21 through an interrupt line 18. The CPU 21 accepts the interrupt and sends, in response to the interrupt, the status to a status input register 16 in the input-output controller 13 of an opposite-side information processing device 17 through a status line 29 by using a status output register 25 in an input-output controller 23 after analyzing the status. Thus unnecessary interrupting operations are eliminated by conveying the interrupt to the opposite-side information processing device by means of the interrupt generation circuit only when the interrupt is required at the time of making transmission from its own information processing device through the status line. Therefore, the control throughput can be improved.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an input/output control method between information processing devices, and in particular, to an input/output control method between two information processing devices each including a central processing unit, a storage device, and an input/output control device. The present invention relates to an input/output control method between information processing devices for mutually transferring data via an input/output control device.

[Conventional technology]

In the conventional input/output control method between information processing devices, when data is transferred from the own information processing device to the other information processing device, data is transferred from the status output register in the input/output control device of the own information processing device via the status line. Then, the status is sent to the status input register in the input/output control device of the destination information processing device, and the destination information processing device receives the status in the status input register and accepts one bit with the status content as an interrupt signal. was going through the motions.

[Problem to be solved by the invention]

The above-described conventional inter-information processing device control system has the disadvantage that the control throughput is reduced because an interrupt operation is performed even when a status that does not require an interrupt operation is received.

[Means to solve the problem]

In the inter-information processing device input/output control method of the present invention, the input/output control device of each information processing device displays the contents of the status input register and the status output register, which display the contents of the status output register and the status output register of the partner information processing device. It has an interrupt generation circuit that originally generates an interrupt, and between the information processing devices is a status line that connects the status input register or status output register of the other information processing device and the status output register or status input register of the own information processing device. and an interrupt line that transmits the interrupt signal output from the interrupt generation circuit to the other party's information processing device.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

Two information processing devices 1 consisting of a central processing unit 11.21, a storage device 12.22, and an input/output control device 13.23
7.27 includes an interrupt generation circuit 14.24, a status input register 16.26, and a status output register 15.25 in the input/output control device 13.23, and a status line 19.27 connecting the status output register and the status input register. 29 and interrupt line 18.28.

Information processing device #1 (17) to information processing device #2 (2
7), when performing input/output control, information processing device #1
The central processing unit 11 of (17) uses the status output register 15 in the input/output control device 13 to send the status input register in the input/output control device 23 of the partner information processing device #2 <27) via the status line 19. Send the status to 26.

At this time, the interrupt generation circuit 14 generates an interrupt signal based on the contents of the sent status, and outputs the interrupt to the central processing unit 21 via the interrupt line 18.

The central processing unit 21 receives the interrupt, analyzes the status, and as a response operation uses the status output register 25 in the input/output control unit 23 to send information to the other party's information processing device #1 (17) via two status lines. The status is sent to the status input register 16 in the input/output control device 13 of.

At this time, the interrupt generation circuit 24 generates an interrupt signal according to the contents of the status, and outputs the interrupt to the central processing unit 11 via the interrupt line 28.

The central processing unit 11 analyzes the status and performs processing as a response to the previously output status.

〔Effect of the invention〕

As explained above, the present invention enables control by omitting unnecessary interrupt operations by transmitting an interrupt to the other information processing device using a generating circuit only when an interrupt is required when transmitting a status line from the own information processing device. The effect is that it can improve the throughput of the engine.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

Claims (1)

[Claims] In an inter-information processing device input/output control method in which data is mutually transferred between two information processing devices consisting of a central processing unit, a storage device, and an input/output control device via an input/output control device, each information processing device The input/output control device has an interrupt generation circuit that generates an interrupt based on the contents of the status input register and the status output register that display the contents of the status output register and the status output register of the other information processing device. The status line that connects the status input register or status output register of the other information processing device and the status output register or status input register of the own information processing device and the interrupt signal output from the interrupt generation circuit are transmitted to the other information processing device. An input/output control between information processing devices, characterized in that the information processing device receiving the interrupt receives a request for data input/output transfer by reading the contents of a status input register of the information processing device. method.