![](/images/new-backgrounds/1200566/200566311x1.webp)
POST | Function | Phase | Component | |
Code | ||||
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0xB7 | Initialize ACPI BIOS. | LBT | Core | |
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0x9B | Enable CPU management (Geyserville I) | LBT | Core | |
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0xBD | Display Boot First menu if MultiBoot is installed and hotkey | LBT | Core | |
| pressed. |
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0xBF | Check virus and backup reminders. | LBT | Core | |
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0x97 | Create pointer to MP table in Extended BDA. | LBT | Core | |
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0x99 | Check support status for | LBT | Core | |
| Technology |
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0xB1 | Unload ROM Pilot | LBT | Core | |
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0xDD | Perform remote flash if requested | LBT | Core | |
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0xC7 | If UCR redirection is installed, remove display manager and | LBT | Core | |
| unhook INT10 |
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0XDF | Shutdown the PXE UNDI code | LBT | Core | |
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0xB3 | Store enhanced CMOS values in | LBT | Core | |
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0xE4 | Last Legacy BIOS Task before hand off to UEFI/DXE | LBT | Core | |
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0xB9 | Clear all screen graphics before booting. | bootLegacy | Core | |
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0xC0 | INT19 entry for legacy boot | bootLegacy | Core | |
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0xEF | Invalid AP # | SDXE | Core | |
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0xEF | SDXE | Core | ||
| (getTSCFreq) |
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0xEE | AP cannot synch BSP in SDXE (syncWithBSP) | SDXE | Core | |
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0xEE | BSP cannot synch w/ AP in SDXE (syncWithAP) | SDXE | Core | |
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146 | Chapter 4 |