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| Appendix H |
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| 1F | Load keyboard matrix (notebook platform) |
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| 21 | HPM initialization (notebook platform) |
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| 23 | 1. | Check validity of RTC value: e.g. a value of 5Ah is an invalid value for RTC minute. |
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| 2. | Load CMOS settings into BIOS stack. If CMOS checksum fails, use default value |
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| instead. |
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| 24 | Prepare BIOS resource map for PCI & PnP use. If ESCD is valid, take into consideration |
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| of the ESCD’s legacy information. |
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| Early PCI Initialization: |
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| 25 |
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| 1. | If Early_Init_Onboard_Generator is not defined Onboard clock generator initialization. |
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| 26 |
| Disable respective clock resource to empty PCI & DIMM slots. |
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| 2. | Init onboard PWM |
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| 3. | Init onboard H/W monitor devices |
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| 27 | Initialize INT 09 buffer |
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| 1. | Program CPU internal MTRR (P6 & PII) for |
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| 29 | 2. | Initialize the APIC for Pentium class CPU. |
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| 3. | Program early chipset according to CMOS setup. Example: onboard IDE controller. |
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| 4. | Measure CPU speed. |
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| 2B | Invoke Video BIOS |
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| 2D | 1. | Initialize |
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| 2. | Put information on screen display, including Award title, CPU type, CPU speed, full |
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| screen logo. |
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| 33 | Reset keyboard if Early_Reset_KB is defined e.g. Winbond 977 series Super I/O chips. |
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| See also POST 63. |
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| 35 | Test DMA Channel 0 |
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| 37 | Test DMA Channel 1. |
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| 39 | Test DMA page registers. |
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| 3C | Test 8254 |
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| 3E | Test 8259 interrupt mask bits for channel 1 |
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| 40 | Test 8259 interrupt mask bits for channel 2 |
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| 43 | Test 8259 functionality |
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| 47 | Initialize EISA slot |
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| 49 | 1. | Calculate total memory by testing the last double word of each 64K page |
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| 2. | Program writes allocation for AMD K5 CPU |
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| 1. | Program MTRR of M1 CPU |
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| 4E | 2. | Initialize L2 cache for P6 class CPU & program CPU with proper cacheable range |
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| 3. | Initialize the APIC for P6 class CPU |
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| 4. | On MP platform, adjust the cacheable range to smaller one in case the cacheable ranges |
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| between each CPU are not identical |
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| 50 | Initialize USB |
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| 52 | Test all memory (clear all extended memory to 0) |
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| 53 | Clear password according to H/W jumper (Optional) |
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AW8 Series