JPH04349557A - Input/output device control system - Google Patents

Abstract

PURPOSE:To quickly interrupt the input/output device connected to the inside of a work station, etc., by a simple operation, with regard to the input/output device control system for executing suspension control of the input/output device. CONSTITUTION:Plural devices 1 each having a register 12 for setting the machine number of an input/output device 3 and an input/output command are connected to a host device 2 through a transmission line, and the host device 2 sets the machine number of the input/output device 3 and an actuating command to the register 12 of the device concerned 1 through the transmission line and executes an input/output processing. This system is constituted so that the host device 2 informs all the input/output devices in the device 1 about interrupting command to interrupt them in accordance with setting of the common machine number and the interrupting command to the register 12 of the device 1 through the transmission line.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input/output device control system for controlling interruption of input/output devices. Workstations in recent years have been significantly enhanced in functionality, and are now connected to printing devices, floppy disk devices, and the like. There is a request from the host device to perform printing and data transfer in the same way as input/output devices directly connected to the host device. To achieve this, when a host device transfers data to a connected workstation, it stores and controls the machine number of the input/output device to be operated in a machine number register within the workstation. At this time, it is desired to quickly and easily interrupt multiple input/output devices when an interruption event occurs.

0002

[Background Art] Conventionally, when a host device starts up an input/output device connected to a workstation, the machine number of the input/output device, the number of transferred bytes, and the input/output command are stored in the machine number register in the workstation. In addition to setting commands, this information is stored in the subchannel area secured for each input/output device number in the host device. On this occasion,
If an error occurs on the transmission path between the host device and the workstation, or if input/output processing (start command) is to be interrupted due to circumstances on the host device side, the host device searches for its own subchannel area and starts it. The machine number of the input/output device of the workstation where the command is set is found, and the machine number and interrupt command to be interrupted are set in the machine number register in this workstation to interrupt the process.

0003

[Problem to be solved by the invention] In this way, conventionally,
When a host device wants to interrupt the input/output processing of an input/output device connected to a started workstation, search the subchannel area to find the machine number of the input/output device in the workstation that you want to interrupt, and then It is necessary to interrupt all input/output devices by setting the corresponding machine number and interrupt command in the machine number register in the workstation, especially when the number of input/output devices in the workstation increases. It is necessary to search the subchannel area and set an interrupt command in the machine number register for each machine number in the workstation found by searching.
There is a problem in that the activated input/output device cannot be quickly interrupted.

An object of the present invention is to quickly interrupt input/output devices connected to a workstation or the like with a simple operation.

[0005]

[Means for Solving the Problems] Means for solving the problems will be explained with reference to FIG. In FIG. 1, a device 1 is a device connected to a host device 2 via a transmission path. The register 12 is a register for setting a device number, an input/output command, etc. for starting or suspending the input/output device 3 connected to the device 1, and for performing input/output processing.

The host device 2 uses the input/output device 3 of the device 1 connected via a transmission line.

[0007]

[Operation] As shown in FIG. 1, the present invention connects a plurality of devices 1 each having a register 12 to a host device 2 via a transmission path, and the host device 2 connects the device 1 to the register 12 of the device 1 through a transmission path. The machine number and startup command of the input/output device 3 are set to perform input/output processing, and when an interrupt factor occurs, the host device 2 sets the common machine number and interrupt in the register 12 of the device 1 via the transmission path. In response to the setting of the command, a suspension command is notified to all input/output devices 3 in the device 1 so that they are suspended.

[0008] Therefore, the device 1 such as a workstation
It becomes possible to quickly interrupt the input/output device 3 connected therein by a simple operation.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the structure and operation of an embodiment of the present invention will be explained in detail using FIGS. 1 to 4. In FIG. 1, a device 1 is a device such as a workstation connected to a host device 2 via a transmission path, and here includes a control section 11 that performs various controls, a register 12, and the like.

The register 12 is a register for setting input/output commands and various data for starting and interrupting the input/output device 3 connected to the device 1, such as transfer byte number data, address control code, etc. Input/output command code (start command, interrupt command, etc.) WS internal machine number (machine number of the input/output device that instructs input/output processing)
This register is used to set other settings.

The host device 2 sets input/output commands in the register 12 for the input/output device 3 connected to the device 1 to perform input/output processing, and controls the input/output device control section 21 and the memory. 22, etc. The input/output device control unit 21 controls the device 1 connected via the transmission path.
The input/output device 3 is used to perform input/output processing.

The memory 22 is a memory that stores whether an input/output command has been issued to the subchannel (input/output device) of the workstation machine number to instruct input/output processing. The input/output device 3 is a variety of input/output devices connected to the device 1 such as a workstation to perform input/output processing, and includes a display, a printer, a disk device, a floppy disk device, and the like.

Next, the concept of the configuration of FIG. 1 will be explained using FIG. 2. In FIG. 2, the host device 2 sets X as the WS internal machine number and an interrupt command in the register 12 in the device 1 in response to the occurrence of an interrupt factor. This means that the host device 2 has already sent the startup command to the register 12 in the device 1.
Although the machine number (for example, A) of the input/output device 3 was set and input/output processing was commanded, a failure occurred on the transmission path between the host device 2 and device 1, or for some reason on the host device 2 side. When you want to interrupt input/output processing, you can issue an interrupt command to all input/output devices 3 in the device 1 without searching to which device number the startup command was issued. Here, the predetermined WS internal machine number = X,
and an interrupt command is set in the register 12.

[0014] In (2), the WS internal machine number is determined and an interrupt command is notified to each input/output device 3. This is ■ and W
In response to the S internal machine number=X and the interrupt command being set in the register 12, the interrupt command is notified to the input/output devices 3 of all machine numbers set in the register 12. ■ and ■ are each input/output device 3 that received notification of the interruption command of ■.
is currently processing an input/output command, sends a completion notification to device 1.
and does not return a completion notification unless an input/output command is being processed.

In ■, the device 1 that received the termination notification in ■ notifies the higher-level device 2 of the termination status and the WS internal machine number. In (2), the higher-level device 2, which has been notified of the termination status and WS internal machine number in (2), performs termination determination and termination processing. As described above, the host device 2 sets the machine number and startup command of the input/output device 3 in the register 1 of the device 1, instructs input/output processing, and prevents failures on the transmission path between the host device 2 and the device 1. When interrupting input/output processing due to the occurrence of an error or an event on the host device 2 side, the host device 2 issues a start command to which machine number of the input/output device 3 in the device 1 to search whether the input/output processing is in progress. Here, we only need to set the machine number The host device 2 is notified of this to perform a series of interruption processing. As a result, the host device 2
In this case, there is no need to issue a startup command to the input/output device 3 of which machine number to search and determine whether input/output processing is in progress, and simply input the predetermined machine number = X and the interrupt command to the register in the device 1. By a simple operation of setting it to 12, it is possible to interrupt the processing of all input/output devices 3.

Next, a specific example of the present invention will be explained in detail using FIGS. 3 and 4. In FIG. 3, a workstation 4 corresponds to the device 1 in FIG. It is something that The input/output device 5 performs various input/output operations, and here, machine number 00: display machine number 01: printer machine number 02: disk device machine number 03: floppy disk device. In addition, machine number 10 is the machine number common to all input/output devices (machine number
).

Next, the operation of the configuration shown in FIG. 3 will be specifically explained using FIG. 4. The following will be explained in the order of (1) to (4). In Figure 4, (1) indicates that the host device 2 sends an input/output command (startup command) to the display device, and - Data to the display data register (WS internal machine number = 00 (display device machine number)). Set.

Correspondingly, the workstation 4 determines the WS internal machine number in step (3), determines that it is a display device, and transfers display data to the display device. The display device, which is the input/output device 5 that received the display data, performs display processing of the display data in step (3). In (2), the host device 2 sets an input/output command (startup command) to the printer device, and - data to the print data register (WS internal device number = 01 (printer device device number)).

Correspondingly, at ■', the workstation 4 determines the WS internal machine number, determines that it is a printer device, and transfers the print data to the printer device. The printer device, which is the input/output device 5 that received the display data, performs printing processing of the print data in step 2'. (3) In response to the occurrence of an interruption factor, an interruption command,
Set the data (WS internal machine number = 10). This is done in response to the occurrence of some kind of failure in the transmission path between the host device 2 and the workstation 4, or the occurrence of some factor that interrupts the input/output processing of the host device 2. =10 in the register 12 and instructs all input/output devices 5 in the workstation 4 to suspend. Correspondingly, the workstation 4 determines the WS internal machine number (determines that it is a common machine number for all input/output devices) at ■, and issues an interrupt command to each WS internal machine number. here,
Display device (machine number 00), printer device (machine number 0)
1) Notify all floppy disk devices (machine number 02) of the suspension command. Machine number 00 that received this interrupt command
The display device ends the process at (3) and notifies the workstation 4 of this fact. Similarly, the printer device with machine number 01, which received this interruption command, completes the process at ■' and notifies the workstation 4 to that effect. Since the floppy disk device has not been activated, it does nothing. The workstation 4 that received these termination notices
■ to notify the end status, WS internal machine number (display device machine number 00) to the host device, ■' to notify the end status,
Notify the host device of the WS internal machine number (printer device machine number 01). Upon receiving these, the host device 2 performs termination processing for the display device number 00 at (■) and termination processing for the printer device number 01 at (■').

As described above, in response to the occurrence of an interruption factor, the host device 2 uses the common machine number, here the WS internal machine number 1.
By a simple operation of setting 0 and an interrupt command in the register 42, the input/output processing of all the input/output devices 5 connected to the workstation 4 is interrupted, and the termination processing is performed upon receiving a notification of the termination. becomes possible.

[0021]

[Effects of the Invention] As explained above, according to the present invention,
In response to the host device 2 setting the common machine number and interrupt command in the register 12 in the device 1, the interrupt command is sent to the input/output devices 3 of all machine numbers to which the device 1 is connected. Since the configuration is adopted in which the output process is terminated and the host device 2 receives notification of the termination status and performs the termination process, the input/output device 3 connected to the device 1 can be interrupted by a simple operation. . This eliminates the need for the host device 2 to search for the machine number of the input/output device that is undergoing input/output processing in its own memory, as in the past, and allows the host device 2 to perform operations when the input/output processing of the host device 2 is interrupted. It can be simplified and performance can be improved.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle configuration of the present invention.

FIG. 2 is an explanatory diagram of the operation in FIG. 1;

FIG. 3 is a configuration diagram of one embodiment of the present invention.

FIG. 4 is an explanatory diagram of the operation in FIG. 3;

[Explanation of symbols]

1: Device 11, 41: Control unit 12, 42: Register 2: Upper device 21: Input/output device control section 22: Memory 3, 5: Input/output device 4: Workstation

Claims (1)

[Claims] 1. In an input/output device control method that performs interrupt control of input/output devices, the device (
1) are connected to multiple host devices (2) via transmission lines,
The higher-level device (2) sets the device number and startup command of the input/output device (3) in the register (12) of the corresponding device (1) via the transmission path to perform input/output processing, and
) is transmitted to the register (1) of the corresponding device (1) via the transmission path.
2) In response to the common machine number and interrupt command settings,
An input/output device control method characterized in that the input/output device control method is configured to notify all input/output devices (3) in the device (1) to suspend them by notifying them of a suspension command.