
| POST Code | Function | Phase | Component | 
| 
 | 
 | 
 | 
 | 
| 0xB5 | Fade out OEM Logo or post string | LBT | Core | 
| 0xC5 | End hotkey detection (Server BIOS) | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0xBE | If BCP option is enabled, clear the screen before | LBT | Core | 
| 
 | booting. | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
| 0xB6 | If password on boot is enabled, a call is made to | LBT | Core | 
| 
 | Setup to check password. If the user does not enter | 
 | 
 | 
| 
 | a valid password, Setup does not return. | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
| 0xBC | Clear  | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0xB7 | Initialize ACPI BIOS. | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0x9B | Enable CPU management (Geyserville I) | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0xBD | Display Boot First menu if MultiBoot is installed and | LBT | Core | 
| 
 | hotkey pressed. | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
| 0xBF | Check virus and backup reminders. | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0x97 | Create pointer to MP table in Extended BDA. | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0x99 | Check support status for  | LBT | Core | 
| 
 | Reporting Technology  | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
| 0xB1 | Unload ROM Pilot | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0xDD | Perform remote flash if requested | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0xC7 | If UCR redirection is installed, remove display | LBT | Core | 
| 
 | manager and unhook INT10 | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
| 0XDF | Shutdown the PXE UNDI code | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0xB3 | Store enhanced CMOS values in  | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0xE4 | Last Legacy BIOS Task before hand off to UEFI/DXE | LBT | Core | 
| 
 | 
 | 
 | 
 | 
| 0xB9 | Clear all screen graphics before booting. | bootLegacy | Core | 
| 
 | 
 | 
 | 
 | 
| 0xC0 | INT19 entry for legacy boot | bootLegacy | Core | 
| 
 | 
 | 
 | 
 | 
| 0xEF | Invalid AP # | SDXE | Core | 
| 
 | 
 | 
 | 
 | 
| 0xEF | SDXE | Core | |
| 
 | SDXE (getTSCFreq) | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
| 0xEE | AP cannot synch BSP in SDXE (syncWithBSP) | SDXE | Core | 
| 
 | 
 | 
 | 
 | 
| 0xEE | BSP cannot synch w/ AP in SDXE (syncWithAP) | SDXE | Core | 
| 
 | 
 | 
 | 
 | 
| 142 | Chapter 4 | 
