1.AMI BIOS 00 From a series of codes (excluding' 00' and FF) to FF or' 00', the motherboard passed the test, OK. (2) If there is no change code, the motherboard is not running. Check whether the CPU is broken, the CPU jumper, the CPU settings are true, the power supply is normal, and the motherboard battery is moldy. (3) If it is set to not prompt for errors in CMOS. Then when a non-fatal fault occurs, the diagnostic card will not stop and then return until 00 ". The solution is to change the CMOS settings and prompt all errors to start, which means stopping if there is a non-fatal fault and debugging according to the code. 0 1 The processor register test is about to start, and the unshielded switch is about to stop. Is it CPU jumper or CPU setting error? Use unmasked interrupts; Start with the extension. Check the motherboard and CPU 03 for power-on and expansion, and the soft reset and power-on test of keyboard controller 04 have been completed. Check that the circuit 05 of the keyboard control part of the motherboard has confirmed soft reset and power on; ; Is about to begin. Check that the motherboard ROM chip and its supporting circuit 06 have started ROM to calculate the checksum of ROM BIOS, and check whether the keyboard warm flush is cleared; Check that the motherboard RCM chip and its supporting circuit 07 ROM BIOS checksum is normal, the keyboard is warm, refreshed and cleared, and BAT (Basic Assurance Test) command is issued to the keyboard. Check the keyboard interface circuit in the motherboard or try to replace the keyboard. 08 has issued a BAT command to the keyboard, and will enter the BAT command soon. Check the motherboard control circuit and Jian 'ou disk itself to verify the keyboard basic guarantee test, and then verify the keyboard command bytes. Check the keyboard socket of the motherboard, try to change the keyboard 0A to send out the keyboard command byte code, and the command byte data will be written soon. When keyboard 0B writes the command byte of keyboard controller, it will send out the locking and unlocking commands of pins 23 and 24. Check that the keyboard controller pins 23 and 24 of the keyboard controller circuit 0C have been shielded and unlocked; NOP command has been issued. Keyboard 0D has processed the NOP command; Then test the CMOS stop register. Check the read-write test of the related circuit 0E CMOS status register in the motherboard for controlling CMOS; Reward computing CMOS checksum. Check the calculated CMOS checksum of the motherboard CMOS chip and its supporting circuit and the motherboard battery 0F and write the diagnostic byte; CMOS begins to prepare. Check that the motherboard battery and CMOS chip 10 CMOS have made initial preparations, and the CMOS status register is about to make initial preparations for the date and time. Check that the CMOS control circuit 1 1 CMOS in the motherboard has made initial preparations, and the DMA and interrupt controller are about to be disabled. Check the chips related to DMA and interrupt controller on the motherboard and their external circuits 12 Disable DMAkong controller 1 and interrupt controller 1 and 2; That is, a video display and a segment b are initially prepared. Check the video interface circuit in the motherboard or graphics card, and only find this to see if it helps.
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