JPH0454548A - Memory check system for computer system - Google Patents

Abstract

PURPOSE:To shorten the starting time despite the large capacity of a memory contained in a computer system by checking the working only in the area of an internal memory indispensable to the start processing and then reading the data to carry out the start processing. CONSTITUTION:When a power supply is applied to a system, a CPU 1 carries out the start processing based on a system start program stored in an internal ROM. A hard disk 4 storing the data to be read into a main memory 3 is set in a data readable state via a disk controller 5. Then the working is checked for the least data necessary for start of the system of the memory 3, i.e. an area necessary for read of a system program which controls the system, i.e. an area A. Then the system program is read out of the disk 4 and sent to the memory 3 via the controller 5. As a result, the starting time is never increased and the operating efficiency is improved even in a computer system where a large capacity memory is applied.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a memory check method at the time of starting up a computer system.

<Prior Art> FIG. 4 shows the operation of a conventional computer system at startup.

At this startup, the computer system checks the operation of all areas of the internal memory into which data is to be read to confirm whether they are operating normally (step 542), and then loads various programs into the internal memory and processes them. conduct.

The startup time Tl of a computer system that performs such operational processing is the time required to execute each step from step 541 to step S44, T2゜T3, Ta, T
It becomes the sum of s.

<Problems to be Solved by the Invention> In the above EcI computer system, the time T required to check the operation of the installed memory occupies a large proportion of the time required to start the system. By the way, in recent years, the capacity of installed memory has been increasing in order to achieve high-speed processing, and as a result, the time for T has become longer, causing an increase in the overall startup time and decreasing the operating efficiency of the system. was decreasing.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a memory hierarchy method that can shorten startup time even if the installed memory capacity of a computer system is large.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a computer system in which data is read into an internal memory and various processes are performed based on the data. After checking the operation of only the area of the internal memory necessary to read the data,
It is characterized in that the data is read into the area and the startup process is performed.

For PCI 1> According to the present invention, when a computer system is started up, only the internal memory area necessary for reading the data essential for the startup process is checked, and the memory in that area is operated normally. Then, the data is read into the area and the startup process is executed.

<Embodiment> An embodiment of the system of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of a computer system that implements the method of the present invention.

1 is a CPU that controls the entire system, 2 is a keyboard that performs input to the system, 8 is a main memory (main storage device) consisting of RAM, 4 is a disk controller that controls, and 6 is for display. CRT, 7 is CRT6
8 is a video memory that stores video information (display information) to be displayed on the CRT 6; 9 is an internal ROM that stores a program for checking the memory, which will be described later; 10 is each Component part t
The address bus and data bus are connected to each other by 1m.

The operation of the computer system having such a configuration after the power is turned on will be explained with reference to FIG.

When the system is powered on, the CPU
The startup process is executed according to the system startup program stored in the computer.

First, the hard disk 4 storing data to be read into the main memory 8 is brought into a data readable state via the Deinook controller 5. Specifically, the process waits until the rotation of the hard disk drive unit 4 becomes stable (step Sl).

Next, the operation of the main memory is checked for the minimum data necessary for starting the system, i.e., the memory area necessary for reading the system program for controlling the system (step S2).

For example, if the main memory area is divided into certain minimum units as shown in Figure 8, and the system program can fit within the capacity of these 8 units, the memory check in step S2 It is sufficient to check the operation of only these 8 units, that is, the area A.

Thereafter, the system program is read from the hard disk 4 into the main memory 8 via the disk controller 5 (step S8). Then, it is determined whether or not to check the file system (step S4). If the file system is to be checked, the process proceeds to step S5 to check the integrity of the file system, and step 1
Proceed to step S6.

On the other hand, if the file system is not checked, the process directly advances to step S6, and it is determined whether there is no free space in the memory area that has been checked for operation and whether there is memory for operation check (step 1 56).

If there is no empty area and there is a memory area whose operation has not been checked, the process advances to step S7 and only necessary areas of the memory area whose operation has not been checked are checked.

Then, various application programs from the hard disk 4 are read into the main memory 8 and processed (step S8). After the execution of the application program has finished, whether or not to continue processing [
Determine whether or not to turn off the power switch (step S9);
If the process is to be continued, the process returns to step S6. If the process is to be terminated, perform termination processing (step 510).
.

In this way, instead of checking the operation of all memory areas installed in the system at startup, at startup, only the memory area where the system program is loaded is checked for startup processing, and then the data is loaded into memory. At the same time, check the operation of the necessary memory area each time.

<Effects of the Invention> According to the present invention, even in a computer system equipped with a large-capacity memory, the start-up time is not long, and the operating efficiency is improved.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a computer system implementing the method of the present invention, Fig. 2 is a flowchart showing the operation of the computer system, Fig. 8 is an explanatory diagram of the memory structure, and Fig. 4 is the operation of a conventional computer system. It is a flowchart figure showing J+. 1... CPU, 2... Keyboard, 8... Main memory (main storage device), 4... Hard disk (secondary storage device), 5... Disk controller, 6...
CRT, 7...CRT controller, 8...Video memory, 9...ROM, 10...Path. Agent Patent attorney Ume 1) Masaru (and 2 others) Fig.

Claims (1)

[Scope of Claims] 1. In a computer system that reads data into an internal memory and performs various processes based on the data, when the system is started, the internal memory necessary for reading the data essential for the start-up processing is provided. A memory check method for a computer system, characterized in that after checking the operation of only an area, the data is read into the area and a startup process is performed.