BIOS read-write memory SPD based computer system information conservation and read method

A technology of computer system and storage method, which is applied in the field of computer systems, can solve problems such as repeated definitions, system startup errors, and a small number of MMX registers, and achieve the effects of high security, convenient implementation, and small amount of code

Inactive Publication Date: 2007-11-28
HUANDA COMPUTER (SHANGHAI) CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the number of MMX registers is very small, and they cannot be stored for a long time during the entire BIOS testing process; although CMOS has 256B available for use, most of the storage space has been fixed, and correspondingly reserved for BIOS developers. The space is relatively small, which often leads to the phenomenon of repeated definition of certain spaces due to insufficient CMOS space during the development process, and causes system startup errors

Method used

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  • BIOS read-write memory SPD based computer system information conservation and read method
  • BIOS read-write memory SPD based computer system information conservation and read method
  • BIOS read-write memory SPD based computer system information conservation and read method

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Embodiment Construction

[0036] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0037] Please refer to shown in Fig. 1 to Fig. 4, this computer system information preservation method based on BIOS read-write memory SPD, comprises the following steps:

[0038] (1) The system performs the operation of initializing the SMBUS controller, which is: the central processing unit CPU 1 initializes the SMBUS controller 3 through the PCI bus 2, and sets the IO base address of the SMBUS; for the specific technical details of initializing the SMBUS controller, please refer to Pages 24 to 50 of "System Management Bus (SMBus) Specification Version 2.0, August 3, 2000, SBS Implementers Forum" (System Management Bus (SMBus) Specification Version 2.0, published on August 3, 2000, SBS Implementers Forum) part.

[0039] (2) The system detects whether the memory SPD 5 can be accessed, and judges the correctness of the corresponding read and...

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Abstract

The invention discloses a computer system information storing and reading method based on BIOS read-write internal memory, which is characterized by the following: initializing SMBUS controller operation; checking internal memory SPD whether be accessed; checking accuracy of relative read-write operation; writing the storing data into special zone of the internal memory SPD with the right operation; accessing internal memory SPD with SMBUS controller; reading the data; calculating; checking; comparing uniformity with the check bit data in the internal memory SPD; reading the data from the special zone in internal memory SPD with uniform data. This invention possesses high information safety, simple programming and convenient realization, which can bring very big convenient for further development of the computer.

Description

technical field [0001] The present invention relates to the field of computer systems, in particular to the technical field of computer system information access, in particular to a computer system information storage and reading method based on BIOS read-write memory SPD (Serial Presence Detect, serial presence detection). Background technique [0002] In modern life and work, computers are used more and more frequently, and the development of computers themselves is getting faster and faster, and various new technologies emerge in endlessly. Before the BIOS initializes the memory, a certain amount of storage space is required to save system detection information and CPU type information. However, since the memory cannot be used at this time, the storage space that the CPU can use and access is quite limited, which will be given to future users. BIOS initialization system brings certain difficulties. The traditional processing method of BIOS is to use the MMX register of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/445
Inventor 朱磊
Owner HUANDA COMPUTER (SHANGHAI) CO LTD
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