JPS6292043A - Control device for input and output controller - Google Patents

Abstract

PURPOSE:To replace the defective area of an input/output controller without interrupting the execution of a program when said defect is detected, by using a means into a CPU to cut off the power supply of the input/output controller. CONSTITUTION:A CPU10, a memory device 20 and plural input/output controllers 30 and 40 are connected with each other via a common bus 100 and also connected with a power supply device 1 respectively. For instance, the defect of an input/output control part 32 of the controller 30 is detected by the CPU10. Thus the CPU10 gives a command to the device 1 to cut off the power supply voltage against the part 32 and also gives a command to an interface part 31 for logical cut-off. Thus it is possible to replace or repair the defective part 32 without cutting off the power supplies of other parts nor interrupting the execution of a program.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an input/output control device used in an information processing device. In particular, the present invention relates to a management device for a defective input/output control device.

〔overview〕

The present invention provides an input/output control device management device that is capable of testing and diagnosing each input/output control device individually.When a defect occurs in the input/output control device, the central processing unit By cutting off the supplied power supply voltage and sending a disconnection signal that simultaneously turns off the interface section via the common bus, even if the power to the input/output control section is cut off, it will not affect the common bus. This makes it possible to replace defective parts of the input/output control device without interrupting program execution.

[Conventional technology]

Conventionally, when testing and diagnosing an input/output control device reveals the existence of a defective part, the method used is to turn off the power to all devices including the input/output control unit, replace the defective part, and then turn on the power again. The defective areas are being repaired.

[Problem that the invention seeks to solve]

Therefore, with such conventional I/O control device management devices, it is necessary to turn off the power to remove the defective I/O control device, so that the defective I/O control device cannot run the program. Even if it is an unrelated device,
The drawback is that when you run the program again, you have to start over from the beginning.

The present invention eliminates these conventional drawbacks, and provides an input/output control device that, when a defect is detected in the input/output control device, allows that part to be replaced without interrupting program execution. The purpose is to provide a management device for

[Means for Solving the Problems] The present invention provides a central processing unit, a storage device, a plurality of input/output control devices, a common bus connecting each of the above devices, and a central processing unit, a storage device, and a plurality of input/output control devices. a power supply device that supplies power supply voltage to each of the input/output control devices, the central processing unit includes means for individually testing and diagnosing the plurality of input/output control devices; In a management device for a human output control device that includes a control unit and an interface unit that controls the connection between this human output control unit and the common bus, the central processing unit has a control device that is determined to be defective by the test and diagnosis means. If there is an input/output control device, means for cutting off the supply of power supply voltage to the input/output control section of the power supply device, and a disconnection signal for stopping the operation of the interface section of the power supply device via the common bus. The method is characterized in that it includes a means for transmitting.

[For production]

The present invention provides that, in an input/output control device that is determined to be defective as a result of test diagnosis, the supply of power supply voltage to the input/output control unit is cut off, and at the same time, the common bus and its input/output control are connected to the interface unit. Since a disconnection signal is input to disconnect the input/output control section, even if the power to the input/output control section is cut off, the common bus can be prevented from being affected.

Therefore, a defective input/output control unit can be replaced or repaired without turning off the power to other parts and without interfering with program execution.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. In FIG. 1, a central processing unit 10, a storage device 20
, a plurality of input/output control devices 30, 40 are connected via a common bus 100, respectively. Input/output control device 30.40
is the interface section 31.41 and the input/output control section 3
2.42. On the other hand, the central processing unit 10,
The power supply device 1 is connected to the storage device 20 and the input/output control devices 30 and 40, respectively. If there is a defect in the input/output control unit 32 of the input/output control unit 30, when the central processing unit 10 performs a test diagnosis of the input/output control unit 30, only the power supply voltage supplied to the input/output control unit 32 is is shut off on the power supply device 1 side.

On the other hand, the central processing unit 10 issues a command to the power supply l to cut off the power supply voltage supplied to the input/output control section 32, and at the same time, it also instructs the interface section 31 to logically switch off the input/output control section 32. Give instructions to disconnect. This results in
When viewed from the central processing unit 10 and the storage device 20, it appears that the input/output control device 30 does not exist.

FIG. 2 is a block diagram of the main parts of the device according to the embodiment of the present invention, and shows a schematic structure of the interface section 31. As shown in FIG. In FIG. 2, an interface section 31 connects a common bus 100 and an input/output control section 32 via a driver D and a receiver R, and a disconnection signal C is supplied from the common bus 100 to the driver D and receiver R. This is the configuration that will be used. The driver D and the lens driver R can both be turned off at the same time by a disconnection signal C sent from the central processing unit IO via the common bus 100, and when viewed from the common path 100, a state in which the human output control device 30 is not present can be realized. can be produced. When this state occurs, since the input/output control section 32 is separated from the interface section 31 due to implementation, the input/output control section 32 can be replaced without turning off the power to other parts. Therefore, even if the program is running, if the program is running without using the human output control device 30, the defective input/output control unit 32 can be replaced during the program.

〔Effect of the invention〕

As explained above, the present invention allows replacement and repair of a defective part of an input/output control device without turning off the power to other devices. There is no need to interrupt the execution of the system, and therefore, there is an excellent effect of reducing the period during which system operation is stopped due to repair of a defective part of the human output control device.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a block diagram of the main parts of the apparatus according to the embodiment of the present invention. ■...Power supply device, 10...Central processing unit, 20...
- Storage device, 30.40... Input/output control device, 31.
41...Interface part, 32.42...I/O side? I [1 copy, 100...common bus.

Claims (1)

[Claims] (1) A central processing unit, a storage device, multiple input/output control devices, a common bus that connects each of the above devices, and a power supply voltage supplied to each of the central processing unit, storage device, and multiple input/output control devices. The central processing unit includes means for individually testing and diagnosing the plurality of input/output control devices, and the input/output control device includes an input/output control unit and a common input/output control unit and In a management device for an input/output control device that includes an interface unit that controls connection with a bus, if the central processing unit has an input/output control device that is determined to be defective by the test and diagnosis means, the power supply device and means for transmitting a disconnection signal to the interface section to stop its operation via the common bus. Management device for output control device.