【正文】 cimal error code, the last two bits indicates the ordinal number of the code.－E n dThe last code( ordinal number limit: 047) forward consulting is displayed。 if press and hold the function switch for about second twice, it will exit the code consulting and enter the second function of main menu, at the same time displayed 2 , then display the reference speed of PCI/ISA bus in decimal in half a second.E n d－The first code (ordinal number limit : 047) backward consulting is displayed。 the last twobit code (00) indicates the ordinal number of the code. If press and hold the function switch for about second twice, it will exit the code consulting and enter the second function of main menu, at the same time displayed2 , then display the reference speed of PCI/ISA bus in decimal in half a second.III. Flow chart BeginPower off and remove all the cards that plug in expansion slot. Insert the card into ISA or PCI slot. (Notice: When you plug it in the ISA slot the ponent side should face to the power, if it plugged in the wrong direction, the card and motherboard is not broken, but both the card and the main board stop running. According to the “Description of LED displaying ”, you can find the cause of the trouble and correct it NOPower on。 ●There are typefaces like “China Copyright 513427”on PI004pi0050。 Known characteristic of spurious cards: ●”中國專有號：” ●”專有技術(shù)：” ●”專利號：”(It is the patent of biology organic pound) ●Be careful .The spurious cards always use badly or unsuitable materials, it hasn’t been tested by the professional equipment ,and has no simulation technique.● At the same time ,there may be a few low card appears to used as PI0050 card.Ⅴ、OBLIGATORY CONTENT 1. The error code table is in the order of the code value that from small to big. The sequence that the code displays is decided by BIOS of the motherboard。The other is made of the tens digit and units digit .According to the two twobit codes, Not only you can know the posting for puter can not pass the units that the thousands digit and the hundreds digit point out, but also you can know that the post for puter can pass the units at last that the tens digit and the units digit point out。4. For the different BIOS (such as AMI、Award、Phoenix ), a Code has different meanings. So make sure that which kind of BIOS you are testing. Or view the user’s guide, or See it on the BIOS IC on the motherboard。6. The time that reset message output needed is not always inphase, so sometimes the code is displayed when the card in the ISA, but it is stopped at the origination code when in the PCI.。Ⅵ、Description of LED displaysLED Type Description CLK Bus clockLights when the power is applied to the empty board (even without CPU ) , or else there is no message.BIOSBase input/output readLED that turn on and off when the board is powered on, as CPU is reading to BIOS.IRDYManager is readyLED that turn on and off when there is a message.OSCOscillationLights when the board is powered on, or else the crystal oscillation circuit is broken, and has no OSC message. FRAMEFrame periodsLights all the time. Turn on and off only when there is a circular frame message. RSTResetLights only for halfsecond when you slide the power switch or the reset switch. If it is lit all the time, check the following: make sure that the reset pin is plugged properly, or the reset circuit is broken.12VPowerLights once the board is powered on, if it is not lit, that means the short circuit occurs on motherboard, or voltage can’t up to 12V.12VPowerThe same as“12V”5VPowerThe same as “12V”5VPowerThe same as “12V” (5V is output only in ISA slot.Ⅶ、Error code table CODEAwardAMI CODEAwardAMI00Code copying to specific areas is done. Passing control to INT 19h boot loader next.01Processor Test 1, Processor status (1FLAGS) verification. Test the following processor status flags: carry, zero, sign, overflow.CPU is testing the register inside or failed, please change the CPU and check it.The BIOS sets each flag, verifies they are set, then turns each flag off and verifies it is off.02Test All CPU Registers Except SS, SP, and BP with Data FF and 00Verify Real Mode03Disable NMI, PIE, AIE, UEI, SQWV.The NMI is disabled. Next, checking for a soft reset or a power on conditionDisable Not masked Interrupt (NMI)Disable video, parity checking, DMA.Reset math coprocessor.Clear all page registers, CMOS shutdown byte.Initialize timer 0, 1, and2, including set EISA timer to a known state.Initialize DMA controllers 0 and 1.Initialize interrupt controllers 0 and 1.Initialize EISA extended registers.04RAM must be periodically refreshed to keep the memory from decaying. This refresh function is working properly.Get CPU type05Keyboard Controller InitializationThe BIOS stack has been built. Next, disabling cache memory.DMA initialization in progress or failure CODEAwardAMI06Reserved Unpressing the POST code next.Initialize system hardware07Verifies CMOS is Working Correctly, Detects Bad BatteryNext, initializing the CPU and the CPU data areaDisable shadow and execute code from the ROM.08Early chip set initializationThe CMOS checksum calculation is Initialize chipset with initial POST valuesMemory presence testOEM chip set routinesClear low 64K memoryTest first 64K memory09Cyrix CPU initializationSet IN POST flagCache initialization0AInitialize first 120 interrupt vectors with SPURIOUSINTHDLR and initialize INT 00h1Fh according to INTTBL.The CMOS checksum calculation is done. Initializing the C