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Method for turning-on computer capable of debugging system and computer system

A computer system and system program technology, applied in the field of computer systems, can solve the problems of no way to know errors, waste of manpower and time, and inability to start the operation of the computer system chipset.

Inactive Publication Date: 2004-10-06
VIA TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when debugging the system BIOS, the most disturbing situation is that when an error occurs in the system BIOS, the operation of the computer system or the chipset cannot be started at all, and there is no way to know the cause of the error.
At this time, it is necessary to use the most basic logic analysis method to directly measure the pin signal to find out the cause of the error, which is very labor-intensive and time-consuming.

Method used

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  • Method for turning-on computer capable of debugging system and computer system
  • Method for turning-on computer capable of debugging system and computer system
  • Method for turning-on computer capable of debugging system and computer system

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Embodiment Construction

[0015] Hereinafter, embodiments of a method and a computer system capable of using a debugging system to start up according to the present invention will be described with reference to the accompanying drawings.

[0016] FIG. 1 shows a block diagram of a computer system that can be booted using a debugging system in an embodiment of the present invention. In a computer system, all components and buses are located on a motherboard (not shown) that provides the necessary routing, sockets, and other miscellaneous connections. The computer system has a central processing unit 10, which is mainly composed of a microprocessor, such as Intel Pentium 4 (Intel Pentium4). The CPU 10 is connected to a system bus 12 and also has a cache memory 13 connected thereto.

[0017] There is a special A20 gate (A20 gate) pin 101 in the CPU 10 . The origin of this A20 door pin 101 is that in the process of computer system development, the old 8086 microprocessor only had an address space of 1MB, ...

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Abstract

The system comprises the CPU, the system bus, the peripheral bus, the expansion bus, the south bridge and the north bridge, the ROM and debug system. The ROM connected to the expansion bus stores the program codes of the BIOS. The debug system is connected to the peripheral bus. The invention includes following steps. The CPU is switched to the normal mode, sending the data request from the system bus to the ROM. The CPU is switched to the debug mode, sending the data request from the system bus to the debug system. The north bridge transfers the data request in the system bus to the peripheral bus. Base on the position pointed by the data, the south bridge or debug system loads the BIOS to the CPU.

Description

technical field [0001] The present invention relates to a method for executing computer system startup, in particular to a computer system and method capable of using a debugging system to start a computer system, which can be used when the basic input / output system (BIOS) program code or its read-only memory (ROM) fails , you can still execute the boot program for debugging. Background technique [0002] In general, the architecture of a computer system is composed of several different layers. The lowest level is the actual hardware layer, while the highest level is the application software that interacts with the user. Between the hardware and the application software is the system software. The system software itself is also divided into multiple parts, including the core and outer layer of the operating system, device drivers, or multitasking execution programs. [0003] There is usually a low-level software layer between the hardware and the system software, called t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445G06F11/28G06F11/34G06F13/38
Inventor 郭宏益
Owner VIA TECH INC
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