JPS6339049A - Diagnosing device - Google Patents

Abstract

PURPOSE:To improve availability of a system by giving the initial diagnosis only to a lower diagnosing device where an initial diagnosis end flag is not set yet. CONSTITUTION:A higher diagnosing device part checks the power supply signals 201-203 via a power supply OFF recognizing part 10 and resets a flag 104 as long as the signal is set at '0' showing a power supply OFF state to give no initial diagnosis to the corresponding lower diagnosing device. The initial diagnosis is unconditionally given to the lower diagnosing device part set at '1' showing a power supply ON state with signals 201-203 as long as a signal 207 received from a forcible initial diagnosis switch 105 is set at '1'. While an initial diagnosis end flag register 104 is checked by a flag checking part 11 when the signal 207 is equal to '0'. Thus the corresponding bit is reset in a power supply OFF state. Then the power supply is turned on and an initial diagnosis instructing part 13 gives an instruction for execution of the initial diagnosis only to the lower diagnosing device part set at '0' showing that the initial diagnosis is not finished yet.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a diagnostic device for a system installed in an information processing device, and more particularly to a diagnostic device that enables the diagnostic device to determine whether or not to perform its own initial diagnosis. .

1. Prior Art Conventionally, a lower-level diagnostic device section provided in each of a number of information processing devices for diagnosing the system, and a microprogram-controlled upper-level diagnostic device section that supervises the lower-level diagnostic device section. In a diagnostic device, each component has a means for instructing the lower-level diagnostic device from the upper-level diagnostic device by a microprogram executed by the higher-level diagnostic device at the time of a terminal diagnosis of the lower-level diagnostic device or system initialization. Initial diagnosis for the lower-order diagnostic device section is unconditionally performed on all lower-order diagnostic device sections at the time of system initialization.

[Problem that the invention seeks to solve]

In the conventional diagnostic device described above, initial diagnosis for each lower-level diagnostic device is performed unconditionally on each lower-level diagnostic device at the time of system initialization. However, for systems that complete the initial diagnosis after the power is turned on and are operated without turning off the power, the initial diagnosis by the corresponding diagnostic device is not necessary. However, each time an initial diagnosis of a pond system was carried out, unnecessary systems were also processed, which had the drawback of significantly reducing system utilization efficiency.

[Means for solving problems]

The components include a lower-level diagnostic device section provided in each of a plurality of information processing devices to diagnose the system, and a microprogram-controlled upper-level diagnostic device section that supervises the lower-level diagnostic device section, and performs initial diagnosis of the lower-level diagnostic device section. However, in a diagnostic device that instructs a lower-level diagnostic device from a higher-level diagnostic device by a microprogram executed by a higher-level diagnostic device at system initialization, the microprogram executed by the upper-level diagnostic device is the first in the system ( The initial diagnosis end flag, which is set when the initial diagnosis performed on each lower-order diagnostic device section is normally completed when converting to 8x, is set corresponding to the lower-order diagnostic device section, and the A means for resetting an initial diagnosis end flag; and a means for checking an initial diagnosis end flag of each lower-order diagnostic device section at the time of system initialization, prior to performing an initial diagnosis of each lower-order diagnostic device section; Sera I・
If the initial diagnosis end flag is not set, the diagnostic device does not perform the initial diagnosis of the corresponding lower-order diagnostic device section, and instructs the initial diagnosis only to the lower-order diagnostic device section for which the initial diagnosis end flag is not set. is obtained.

(,Example〕 Next, the present invention will be explained using the drawings.

FIG. 1 is a block diagram showing an example of the functions of a higher-level diagnostic device corresponding to one of the lower-level diagnostic devices of the diagnostic devices of the present invention. 10 indicates whether the power of the lower-level diagnostic device is ON or OFF
11 is a flag check section, 12 is an initial diagnosis instruction section, and 104 is an initial diagnosis end flag.

FIG. 2 is a configuration diagram of a diagnostic device according to an embodiment of the present invention.

Reference numeral 100 indicates an upper-level diagnostic device section, 101 to 103 indicate lower-level diagnostic device sections provided in each of the information processing devices, and 201 to 203
is the power signal of the lower-order diagnostic device, that is, the system. When it is 1, the power is on; when it is '0', the power is off. IC)'4
is the initial diagnosis end flag register.

FIG. 5 is a diagram showing the contents of the initial diagnosis end flag register 1o.1, which has one bit for each lower-order diagnostic device section, and a value of "1" indicates the end of the initial diagnosis. 106 is an input device for inputting commands to the upper-level diagnostic device. 204-20
Reference numeral 6 denotes a transmission line for a diagnosis instruction signal and a diagnosis end signal.

FIG. 3 shows flowchart 1 in the idle state of the microprogram executed in the upper diagnostic device section, and the power signals 201 to 203 of the lower diagnostic device sections 101 to 103 are always 0' indicating power OFF. The initial diagnosis end flag register 10 is set by the OFF recognition unit (FIG. 1 10).
When a command is input by the command 208 from the input device 106 (FIG. 3 302), processing according to the command is started.

When a system initialization command is sent from the input device 106, the microprogram executed on the upper-level diagnostic device executes system initialization command processing.

FIG. 1 is a flowchart for determining whether to perform an initial diagnosis by the lower-order diagnostic device during system initialization command processing.

This will be explained below in conjunction with FIGS. 1 and 2. The upper-level diagnostic device unit recognizes the power signals 201 to 203 as a power OFF recognition unit 10.
If the signal is 0° indicating that the power is off, the flag 104 is reset, and the initial diagnosis is not performed on the corresponding lower-order diagnostic device (402>.Power signals 201 to 20
For the lower diagnostic device section of "1" where 3 indicates power ON, the processing differs depending on the signal 207 from the forced initial diagnosis switch 105 (403). That is, when the forced initial diagnosis signal 207 is 1°, that is, If the forced initial diagnosis is performed, the initial diagnosis instruction section 405) is unconditionally set, and when the forced initial diagnosis signal 207 is O゛, that is, when the forced initial diagnosis is not performed, the initial diagnosis end flag register 104 is set to the flag check section. 11 is checked and the corresponding bit is powered on.
It is reset with FF, then the power is turned on and the initial diagnosis II
The initial diagnosis instructing section 12 instructs only those lower-level diagnostic apparatus sections whose value is 0' indicating that the initial diagnosis has not been completed (404, 405 in FIG. 4).

In addition, the microprogram that is executed while waiting for the system initialization process executes the initial diagnosis of the lower-level diagnostic device (when the initial diagnosis is completed normally, the initial diagnosis corresponding to the lower-level diagnostic device section is terminated by the diagnosis end signal 204). Flag register 10
The 4th beep 1 indicates that the initial diagnosis has been successfully completed.
1" and return to the idle state. If the diagnosis does not end normally, that is, if there is an abnormal state, an alarm (not shown) is output to the display, etc.

To summarize, the present invention checks the initial diagnosis end flag of each lower-order diagnostic device section before executing the initial diagnosis of each lower-order diagnostic device section at the time of system initialization, and determines whether the initial diagnosis end flag is set to In this case, the initial diagnosis is not performed for the corresponding lower-order diagnostic device section, but only for the lower-order diagnostic device section for which the initial diagnosis completion flag is not set.

Further, a microprogram executed on the upper-level diagnostic device section recognizes the state of the forced initial diagnosis switch 105,
Only when the switch is manually turned ``○N'' or ``OFF'' is the state of the switch ``○N'', regardless of the state of the initial diagnosis completion flag at the time of system initialization, unconditionally, that is, all lower-level diagnosis It performs initial diagnosis on the device. In the embodiment, the forced initial diagnosis switch 105 is provided to realize the conventional function, but it is clear from the above description that the purpose of the invention can be achieved even without this.

〔Effect of the invention〕

As explained above, the present invention is based on the idea that system failures are likely to occur when the power is turned on, and that if the initial diagnosis is performed once when the power is turned on, then even if it is not performed thereafter, there is little problem in terms of the probability of failure. By not performing the initial diagnosis of the lower-order diagnostic device every time, it is possible to improve the system utilization efficiency, which has a large effect.

[Brief explanation of drawings]

Fig. 1 is a functional block diagram showing one embodiment of the present invention;
The figure is a configuration diagram showing an example of the configuration of the diagnostic device of the present invention.
The figure is a microprogram idle state flowchart,
FIG. 4 is an initial diagnosis execution determination flowchart, and FIG. 5 is a diagram showing the contents of the initial diagnosis completion flag register. DESCRIPTION OF SYMBOLS 10... Power OFF recognition part, 11... Flag check part, 12... Initial diagnosis instruction part, 100... Upper diagnostic device part, 101-103... Lower diagnostic device part, 20
1 to 203...Power signal, 204...20 (5...
- Control signal, 104... Initial diagnosis end flag register, 1゜5... Forced initial diagnosis switch, 106... Human power device, 207... Forced initial diagnosis signal, 208...
input signal. 7-2-゛

Claims (1)

[Claims] The components include a lower-level diagnostic device section provided in each of a plurality of information processing devices to diagnose the system, and a microprogram-controlled upper-level diagnostic device section that supervises the lower-level diagnostic device section, and performs initial diagnosis of the lower-level diagnostic device section. However, in a diagnostic device in which a microprogram executed in a higher-level diagnostic device section instructs a lower-level diagnostic device section from a higher-level diagnostic device section at the time of system initialization, the microprogram executed in the upper-level diagnostic device section An initial diagnosis end flag arranged corresponding to the lower-order diagnostic device section is set when the initial diagnosis performed on each lower-order diagnostic device section is normally completed, and the corresponding initial diagnosis ends when the power of the lower-order diagnostic device section is turned off. means for resetting the flag, and at the time of system initialization, prior to performing an initial diagnosis of each lower-order diagnostic device, an initial diagnosis end flag of each of the lower-order diagnostic devices is checked, and the initial diagnosis end flag is checked to make sure that the initial diagnosis end flag is set. If so, the method is characterized by comprising means for instructing the initial diagnosis only to the lower-order diagnostic device section for which the initial diagnosis end flag is not set, without performing initial diagnosis of the corresponding lower-order diagnostic device section. diagnostic equipment.