JPH04287209A - Computer system - Google Patents

Abstract

PURPOSE:To eliminate the need of storage holding operations from a computer system and to enable the system to execute a processing which was executed by the system before a power failure occurs in a short time after the power supply is restored by using an SRAM as the main storage device of the system. CONSTITUTION:An SRAM is used as the main storage device of this computer system. Accordingly, storage holding operations, such as power supply, etc., become unnecessary and the memory state of the main storage device before a power failure occurs can be maintained. The initializing programs of LSIs 4 for controlling peripheral devices are stored in a ROM 3. When the power supply is restored, the programs are loaded and the LSIs 4 for controlling peripheral equipments are initialized. Since the memory state of the main storage device 1 is maintained in the same state as the before the power failure occurs, an operating system and application program are immediately set to executable states. Therefore, the processing which was executed before the power failure occurs can be executed in a short time after the power supply is restored.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer system, and more particularly to a computer system with an improved power-on processing method.

0002

2. Description of the Related Art An example of a conventional computer system is shown in FIG. FIG. 4 is a functional configuration diagram of a conventional computer system. This computer system includes a main storage device 1, a central processing unit 2, a ROM 3, and a peripheral device control L.
It includes an SI 4 and a hard disk 5.

When the power is turned on again, the program stored in the ROM is loaded (step 31), and then the OS (operating system) is loaded (step 32).
, expanded on main storage. Next, the peripheral device control LSI is initialized using the program stored in the OS (step 33), and an AP (application program) is loaded (step 34) and expanded onto the main storage device. By performing the processing in this order, the computer system becomes executable.

0004

[Problems to be Solved by the Invention] In the above-mentioned conventional computer system, the main memory does not retain memory when the power is turned off, so every time the power is turned on again, data is stored in the main memory. Since the process of loading the OS and the AP is executed, there is a problem in that it requires processing time until the state becomes executable.

[0005]

[Means for Solving the Problems] The computer system of the present invention uses an SRAM as the main storage device, and when the power is turned on again, a program is stored in the LSI for initializing the peripheral device control LSI. It is characterized by being ready to run simply by loading and running the program.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a diagram showing a program loading method according to an embodiment of the present invention. FIG. 2 is a functional configuration diagram of an embodiment of the present invention.

FIG. 2 shows a main storage device 1, a central processing unit 2, a ROM 3, and an LSI 4 for controlling peripheral devices. By using SRAM, the main memory device 1 does not require memory retention operations such as power supply, and can maintain the memory state of the main memory device before the power is turned off. The central processing unit 2 has the same functions as a conventional computer system. ROM3 is an LSI for peripheral device control that is stored in the OS in conventional computer systems.
It stores a program that performs the initialization process of step 4.

Next, the operation of this computer system will be explained. By turning the power back on, the program is loaded from the ROM 3 (step 11). Just by loading this program, the initialization process of the peripheral device control LSI 4 is completed (step 12). Furthermore, since the memo state of the main storage device is maintained as it was before the power was turned off, the OS and AP become executable immediately. By using such a computer system, the processing that was performed before the power was turned off can be executed in a short time after restarting, and the OS
It becomes possible to construct a computer system that does not require loading processing of AP or AP at the time of restart.

0010

[Effects of the Invention] As explained above, according to the present invention,
Since the main storage device retains the memory state before the power is turned off, the effect is that the processing before the power is turned off can be executed in a short time after the power is restarted.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a program loading method according to an embodiment of the present invention.

FIG. 2 is a functional configuration diagram of an embodiment of the present invention.

FIG. 3 is a diagram showing a conventional program loading method.

FIG. 4 is a functional configuration diagram of a conventional example.

[Explanation of symbols]

1 Main memory 2 Central processing unit 3 ROM 4 LSI for peripheral device control 5 Hard disk 11 LSI road step

Claims (1)

[Claims] Claim 1: An SRAM is used as the main storage device, and when the power is turned on again, a program for initializing the peripheral device control LSI is stored in the LSI, and the program can be executed by simply loading and executing the program. A computer system that stands up.