POST | Function | Phase | Component | |
Code | ||||
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0x7E | The Coprocessor initialization test. Use the floating point | LBT | Core | |
| instructions to determine if a coprocessor exists instead of the |
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| ET bit in CR0. |
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0xC1 | Check Boot Type (Server BIOS) | LBT | Core | |
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0x80 | Disable onboard COM and LPT ports before testing for | LBT | Core | |
| presence of external I/O devices. |
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0xCA | Redirect Int 15h to enable target board to use remote keyboard | LBT | Core | |
| (PICO BIOS). |
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0x88 | Initialize interrupt controller. | LBT | Core | |
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0x81 | Run late device initialization routines. | LBT | Core | |
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0x87 | Initialize motherboard configurable devices. | LBT | Core | |
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0x85 | Display any ESCD read errors and configure all PnP ISA | LBT | Core | |
| devices. |
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0x82 | Test and identify RS232 ports. | LBT | Core | |
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0x84 | Test and identify parallel ports. | LBT | Core | |
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0x86 | Initialize onboard I/O and BDA according to CMOS and | LBT | Core | |
| presence of external devices. |
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0x83 | Configure Fisk Disk Controller. | LBT | Core | |
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0xCE | Initialize digitizer device and display installed message if | LBT | Core | |
| successful. |
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0x89 | Enable | LBT | Core | |
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0x8C | Initialize both of the floppy disks and display an error message | LBT | Core | |
| if failure was detected. Check both drives to establish the |
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| appropriate diskette types in the TrustedCore data area |
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0xCB | Redirect Int 13h to Memory Technologies Devices such as | LBT | Core | |
| ROM, RAM, PCMCIA, and serial disk (PICO BIOS). |
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0xCD | Remap I/O and memory address space for PCMCIA (PICO | LBT | Core | |
| BIOS). |
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0x90 | Initialize | LBT | Core | |
| intact, and fixed disks are defined, call the fixed disk init routine |
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| to initialize the fixed disk system and take over the appropriate |
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| interrupt vectors. |
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0x8B | Setup interrupt vector and present bit in Equipment byte. | LBT | Core | |
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0x95 | 1. Check CMOS for | LBT | Core |
2.Activate the drive by checking for media present
3.Check sector 11h (17) for Boot Record Volume Descriptor
4.Check the boot catalog for validity
5.Pick a boot entry
6.Create a Specification Packet
0x92 | Jump to UserPatch2. | LBT | Core |
0xB6 | If password on boot is enabled, a call is made to Setup to | LBT | Core |
| check password. If the user does not enter a valid password, |
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| Setup does not return. |
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0x98 | Search for option ROMs. Rom scan the area from C800h for a | LBT | Core |
| length of BCP_ROM_Scan_Size (or to E000h by default) on |
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| every 2K boundary, looking for add on cards that need |
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| initialization. |
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0x93 | Build the MPTABLE for | LBT | Core |
142 | Chapter 4 |
