电脑硬件开机启动顺序（国外英文资料）.docVIP

电脑硬件开机启动顺序（国外英文资料） Computer hardware boot sequence Step 1: when we press the power switch, the power started to the main board and other equipment power supply, the voltage is not stable, control mainboard chipset will sent CPU and maintain a RESET (RESET) signal, let the CPU initialization. After the stable power supply to the power supply (from stable to stable, of course, the process is only a short moment), chipset and removed the RESET signal (if it is a manual press the RESET button to restart the computer panel machine, then release the button and chipset will removed RESET signal), CPU will soon begin to execute instructions from address FFFF0H, within the scope of this address in the system BIOS, whether Award BIOS or AMI BIOS, here is a jump instruction, to real startup code in the system BIOS. Step 2: system BIOS startup code first thing to do is to POST (Power On Self Test, plus electricity self-inspection), is the main task of the POST detection system whether there is some of the key equipment and can work normally, such as memory and graphics card, etc. Due to the process of monitoring the POST before the display card initialization, so if in the process of POST self-checking found some fatal errors, if any problem found no memory or memory when conventional memory (POST process check only 640 k), cannot be displayed on the screen, then system PIOS voice over the loudspeaker to report errors, the length and frequency of sound on behalf of the wrong type. Under normal circumstances, the POST process went so quickly that we could barely feel the process. BISO step 3: the system will find the display card BIOS, the starting address of the store display card BIOS ROM chip in C0000H place, usually find graphics system BIOS called after the BIOS initialization code, are done by the graphics card BIOS display card initialization. Most display card in the process often shows some display card information on the screen, such as manufacturers, the types of gra