台式机电脑主板检测代码全（Desktop computer motherboard detects code all）.docVIP

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台式机电脑主板检测代码全（Desktop computer motherboard detects code all）.doc

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台式机电脑主板检测代码全（Desktop computer motherboard detects code all）

台式机电脑主板检测代码全（Desktop computer motherboard detects code all） In general, code: FF, 00, C0, D0, CF, F1, or nothing means the CPU hasnt passed ? ? C1, C6, C3, D3, D4, D6, D8, B0, A7, E1 represent memory ? ? 24, 25, 26, 01, 0A, 0B, 2A, 2B and 31 represent the graphics card ? 23, 24, 25, said some integrated graphics motherboard can normal light, some VIA chipset showed 13 said can light up, some in the name-brand computer motherboard shows 0 b is normal, some motherboard shows 4 e said normal light, some INTEL motherboard chipset showed 26 or 16 can normal light. ? ? The combination cycle of C1, C6, C3, 01, and 02 is mostly I / 0 bad or swiping the BIOS ? ? If shown in 05, ED, 41, direct the BIOS 00. Will control INI19 boot load. . 01 processor test 1, processor state verifies, if the test fails, the loop is infinite. Processor register tests are about to begin, and unblocking interrupts are about to be stopped. CPU register tests are ongoing or fail. Determine the type of diagnosis (normal or manufacturing). If the keyboard buffer contains data, it will fail. Disable unmasking interrupt; Start with a delay. CMOS write/read is in or out. Remove 8042 keyboard controller and send out the TESTKBRD command (AAH). ROM? The BIOS checkups are ongoing or fail. 4 reset the 8042 keyboard controller to verify the TESTKBRD. Soft reset/power test for keyboard controller. Programmable interval timer tests are being performed or failed. If repeated manufacturing tests 1 to 5 are repeated, 8042 control status can be obtained. The soft reset/power is determined; The ROM is to be started. The DMA is starting or failing. Make the circuit chip initial preparation, disable video, parity, DMA circuit, and clear DMA circuit, all page registers and CMOS outage bytes. The ROM BIOS check sum has been set up and the keyboard buffer is checked. The DMA initial page register read/write test is ongoing or malfunctioning. 7 processor test 2, verify the CPU registers work. ROM BIOS check sum is normal