JPS6045865A - Information processor - Google Patents

Abstract

PURPOSE:To discriminate easily the state of connection of a device to be controlled with no change of an interface for an interruption request, by making use of an interruption request signal line led from the device to be controlled to discriminate the state of connection of said device. CONSTITUTION:When connection information registers 8-10 of devices 2-4 to be controlled are turned on with an electric power supply or a system reset signal, the interruption request signal lines 5-7 are energized via OR circuits 14- 16 to inform a controller 1 that the devices 2-4 are connected. The controller checks an interruption request signal and transmits a specific instruction to the devices to be controlled when the check is over to reset connection information registers 8-10. These registers are set only by the power supply ON or the system reset signal and therefore never turned on unless the power supply is turned on or the system is reset. Therefore the subsequent interruption signal lines 5-7 can be used as normal interruption request signal lines.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Object of the Invention The present invention relates to an information processing device, and particularly to a method for determining the connection state of hardware-divided circuits or devices.

(b) Prior Art Conventional methods for determining connection devices include: i) A method of manually setting connection information by setting a flag in a specific recording circuit within the information processing device using a service processor or a direct key; ii) ) There is a problem with the guarantee method for the method in which the control device recognizes that there is no connection when the control device issues an access request to the controlled device and no response signal is returned even after a predetermined period of time has elapsed (so-called timeout). was there. The method ii) has the disadvantage that it requires waiting for a predetermined period of time, and the longer the number of unconnected circuits increases.

(c) Object of the present invention The object of the present invention is to provide an information processing device including a control device and a plurality of i1i+ controlled devices, in which a plurality of controlled devices or circuits provided to be controlled by the control device An object of the present invention is to provide a method for determining the connection state of a controlled device by using the interrupt request signal ink face without changing it.

(d) Main points of the present invention The present invention utilizes an interrupt request signal line from a controlled device to determine the connection state of the controlled device.
By controlling the separate request signal to be turned ON by N or system reset, etc. so that it becomes 7 OFF, which is recognized by the control device, it is possible to easily control the controlled device without changing the conventional interface for interrupt requests. This allows you to determine the connection status.

(e) Embodiment of the invention FIG. 1 shows an embodiment of the invention, in which 1 is a control device, 2 to
4 is a controlled device, 5 to 7 are interrupt request signal lines from the controlled device to the control device, and 8 to 10 are controlled devices 2 to 4.
11 to 13 are Inatsune interrupt request signal lines in the controlled device, and 14 to 16 are OR circuits, which are connected to the normal interrupt request signal lines 11 to 13. and the connection status register 8~
The logical OR output with the output of lO is sent to the interrupt request signal line 5~
Connect to 7.

When the connection information registers 8 to 1o of the gold wave control device are turned on by power-on or a system reset signal, the interrupt request signal lines 5 to 7 are energized via the OR circuits 14 to 16, and the respective signals are sent to the control device. Notify that the controlled device is connected.

When the control device side checks this interrupt request signal and immediately resets the connection information registers 8 to 10, it sends, for example, a specific command to the controlled device (route not shown). The device side receives the command and resets the connection information register.

The connection information registers 8 to 10 are set only by the above-mentioned power ON or system reset signal, so they will not be turned ON again unless the power supply Q, N or system reset is performed, so subsequent interrupt request signals Lines 8-10 can be used as normal interrupt request signal lines.

The registers 8 to 10 can be reset not only by instructions from the control device as described above, but also by the method of resetting them immediately after the control device 1 completes recognition of the signals through the interrupt request signal lines 5 to 7. It may be configured by hardware.

As is clear from the above explanation, the control device 1 needs to separate and control the separate request signal into a signal for determining the connection state of the controlled device and a normal interrupt request signal. Since it is not directly related to the gist of the present invention, it will be omitted here.

In the present invention, a 1:1 interrupt request signal line is used as an interface for a per-plane request signal, but it goes without saying that the scope of application of the present invention is not limited to this.

(f) Effects of the Invention According to the present invention, the connection state of a controlled device or circuit can be determined simply by performing specific interrupt processing in the control device, which is effective in increasing the speed and reliability of information processing.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating an embodiment of the present invention. In the figure, 1 is a control device, and 2 to 4 are controlled devices. 5 to 7 indicate interrupt request signal lines, and 8 to 10 indicate connection information registers.

Claims (1)

[Claims] In order to be controlled by a control device and the control device, the interrupt request signal is turned ON when the power is turned on or the system is reset, and after the control device recognizes the interrupt request signal, it is turned OFF and thereafter a normal interrupt request can be made. An information processing device characterized in that the interrupt request signal is controlled so as to control the interrupt request signal.