JPS59178552A - Self diagnosis controlling system - Google Patents

Abstract

PURPOSE:To give conformity at the time of an electric power source making by providing a part of no power stoppage or a nonvolatilizable part that stores preceding precare execution time at the time of power supply making. CONSTITUTION:A battery backed up part 1 continues operation even when power source is made off. When data moving up pulse UP is outputted from a clock section 2, an FF3 is reset and a precare cut signal (self diagnosis prohibition) becomes off (prohibition release). When power source is made upper this condition, a precare program confirms that FF3 is off, and executes precare. After completion of precare, a precare execution completion signal pulse END is outputted to set FF3, and accordingly, a precare cut signal CUT becomes on (prohibit). After this, on state is continued unless data moving up pulse UP is outputted, precare is not executed any more even if make and break of power source is repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a self-diagnosis control method when power is turned on in an information processing apparatus.

Conventional technology and problems In normal information processing equipment, self-diagnosis (pre-care) is used to detect abnormalities, if any, before starting work after power is turned on.
is executed automatically. This pre-care includes (11 CP)
Diagnostic items include whether all commands in U operate correctly, (2) whether there are any errors in memory operation, and (3) whether connections to input/output devices such as displays, printers, and disks are normal. Normal or abnormal memory operation is determined, for example, by writing specific data and whether or not it is read out as written. If you do this, the parity check mechanism or ECC
You can also check whether the mechanism is normal or abnormal. In general, this pre-care takes 30 seconds to 1 minute for small machines, so if you are using an office computer that is used intermittently by being turned on and off several times a day, you may need to perform pre-care each time the power is turned on. You have to wait for the process to complete, which is extremely troublesome. Some models allow pre-care to be omitted by operating the operator, but in this case, if the operator leaves the pre-care omitted, there is a risk that no pre-care will be performed for a long period of time.

OBJECTS OF THE INVENTION The present invention automatically performs pre-care, but when the power is turned on again within a predetermined time from the previous pre-care execution time, pre-care is omitted to provide immediate response.

Structure of the Invention The present invention provides an uninterruptible or non-volatile self-diagnosis control system for an information processing device that is equipped with a pre-care program that automatically performs self-diagnosis when the power is turned on. The present invention is characterized in that a memory circuit is provided, and self-diagnosis by the BriCare program is prohibited when the power is turned on within a certain period from the time of execution.This will be explained in detail below with reference to the illustrated embodiment.

Embodiment of the Invention The drawing is a main part configuration diagram showing an embodiment of the present invention.
Figure 1 shows part 1 buffered by the battery. This includes a clock section (timer) 2 that constantly counts the year, month, day, hour, minute, and second. That is, the computer is equipped with a calendar, and T○D (Time' of Da
There is a device that outputs te) (this is common in large and medium-sized computers), and the hour hand section 2 is for this purpose.

In the present invention, this is the date rising signal (pulse) of the clock.
Flip-flop (register) 3 reset by UP
However, as this flip-flop 3, a surplus flip-flop (such as this one) in the clock circuit is used.
(usually there are two) can be used.

The date setting signal UP is output once a day only when the date is changed. Flip-flop 3 is driven by a signal END which is output when the precare program completes execution of precare.

CUT is a pre-care cut (self-diagnosis prohibition) signal, which is turned on (prohibited) when the flip-flop 3 is set by the signal END, and turned off (cancelled) when it is reset by the signal UP.

The battery pack unit 1 is operated by a battery (not shown) even when the information processing apparatus including the unit 1 is powered off. This information processing device has a pre-care program that is started when the power is turned on, and in this example, one of the pre-care execution conditions of this program is that the pre-care cut signal CUT is off. That is, when the clock unit 2 outputs the date increment pulse tJP, the flip-flop 3 is reset and the pre-care cut signal CUT is turned off. When the power is turned on to the device in this state, the precare program outputs the precare cut signal C.
Make sure that UT is off (the program is FF3
Check the output status of , recognize that it is OFF, and execute pre-au.

This pre-care program outputs a pre-care execution completion signal (pulse) END after completing the pre-care, and outputs a pre-care execution completion signal (pulse) END to the flip-flop 3.
, the pre-care cut signal CUT is turned on.

Thereafter, the pre-care cut signal CUT remains on unless the clock unit 2 outputs the date increment pulse UP, and even if the power is turned off and then turned on again, the pre-care cut signal CUT remains on in the pre-care program. remains on, so pre-care is not executed. Due to the above,
Precare is executed only when the power is turned on for the first time in a day, but by setting the clock unit 2, that is, using a timer, the signal UP can be set at an appropriate time interval shorter or longer than one day. It can be generated every time.

This time interval may be determined as appropriate within the safety range that the designer of the device considers logically necessary.

The illustrated example is constructed using a normally equipped pantry backup type clock unit 2 and a 1-bit register (flip-flop 3), but it is also possible to use a non-volatile memory such as a bubble or core memory. The last pre-care execution time (date and time) may be stored, and the pre-care program may determine how many hours have passed since then when the power is turned on, and execute pre-care if necessary.

Furthermore, by accumulating and storing the period during which the device power is on in this non-volatile memory, pre-care may be executed when the power is turned on after the cumulative time exceeds a certain value. .

In this case, unlike other methods, the period when the power is off is ignored, but this does not pose a practical problem because it is mainly during the period when the power is on that abnormalities occur in the main body of the apparatus.

Effects of the Invention As described above, according to the present invention, an information processing device that automatically executes pre-care when the power is turned on is provided with an uninterruptible or non-volatile part that stores the time point of the previous pre-care execution. , the content is referred to by the Bricare program to determine whether to execute subsequent Bricare. It has the advantage of being able to provide quick response, and also preventing the risk that Blicare will not be carried out for a long period of time.

[Brief explanation of the drawing]

The drawing is a block diagram showing one embodiment of the present invention. In the figure, 1 is the battery backup part, 2 is the clock part, 3
is a flip-flop. Applicant Fujitsu Limited

Claims (2)

[Claims] (1) In a self-diagnosis control method for an information processing device that is equipped with a pre-care program that automatically performs self-diagnosis when the power is turned on, an uninterruptible or non-volatile memory circuit that memorizes the point in time when the last self-diagnosis was executed is used. 1. A self-diagnosis control method, wherein the self-diagnosis control method is characterized in that self-diagnosis by the Bricare program is prohibited when the power is turned on within a certain period from the time of execution. (2) The memory circuit is characterized by comprising a flip-flop circuit which is set by a self-diagnosis execution completion signal to output a self-diagnosis prohibition signal, and which resets the date of the clock by an advance signal and stops outputting the signal. A self-diagnosis control system according to claim 1.