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Computer system initialization via boot code stored in sequential access memory

A computer system and activation code technology, applied in the field of computer systems

Inactive Publication Date: 2004-12-22
GLOBALFOUNDRIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the past, no technology has been able to achieve this function

Method used

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  • Computer system initialization via boot code stored in sequential access memory
  • Computer system initialization via boot code stored in sequential access memory
  • Computer system initialization via boot code stored in sequential access memory

Examples

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Embodiment Construction

[0022] figure 1 Shown is a computer system 10 of the present invention including a motherboard 12 therein. A processor or central processing unit (Central Processing Unit, CPU) 14, also known as a microcontroller or microprocessor, a volatile random access memory (volatile random access memory) 16, and a power supply 18, according to common operation methods It is configured on the motherboard 12 . Input / Output (I / O) unit 20 provides connections between motherboard 12 and typical I / O devices, such as display monitor 22 , keyboard 24 , and one or more disk drives 26 . These components are connected via signal buses, power lines, connection plugs, etc., collectively shown at 28 .

[0023] In accordance with the present invention, system 10 also includes a power good or reactivation signal generator 30 that generates a PWRGOOD (or RESET) signal after power supply 18 has been activated and the operating voltage has reached an appropriate level. System 10 further includes serial...

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Abstract

A computer system includes a processor and a sequential access memory having a boot program stored therein. A boot loader includes a state machine which, in response to initialization of the computer system, controls the sequential access memory to read the boot program and then controls the processor to jump to the boot program in the sequential access memory. The first memory page of the boot program causes further boot code to be transferred to a Random Access Memory (RAM). The processor then jumps to the code in the RAM, which causes the remainder of the boot code to be transferred from the sequential access memory to the RAM and executed.

Description

technical field [0001] The invention relates to electronic digital computer technology, in particular to a computer system which stores a group of activation codes in serial access memory. Background technique [0002] A common digital computer system includes a non-volatile read only memory (ROM) containing activation code instructions. This activation program code is used to set the low-level hardware functions of the system before the operating system or application program control system. [0003] The system's central processing unit (Central Processing Unit, CPU), usually a microcontroller or microprocessor, is set to jump to a predetermined memory address in ROM, and after the system is initialized (including turning on the power or restarting Activation) to execute the activation code. The activation code causes the operating system or boot application to load and execute. [0004] The activation code ROM is generally a random access memory, and instructions or dat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/445
CPCG06F9/44573G06F9/4401G06F9/4403G06F8/54
Inventor 瑞夫·E·吉普森罗南·J·雪林斯基马克·A·麦克林
Owner GLOBALFOUNDRIES INC
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