HP Vectra VL800 Technical Reference Manual page 131

Checkpoint
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B2h POST done - prepare to boot operating system
B5H Terminate QuietBoot (optional)
B6h Check password (optional)
B7h ACPI tables initialized
B8h Clear global descriptor table
B9h Prepare Boot
BAh Initialize DMI parameters
BBh Initialize PnP Option ROMs
BCh Clear parity checkers
BDh Display MultiBoot menu
BEh Clear screen (optional)
BFh Check virus and backup reminders
C0h Try to boot with INT 19
C1h Initialize POST Error Manager (PEM)
C2h Initialize error logging
C3h Initialize error display function
C4h Initialize system error handling
C5h PnPnd dual CMOS (optional)
C6h Initialize notebook docking (optional)
C7h Initialize notebook docking late
C8h Force check (optional)
C9h Extended checksum (optional)
D2h Unknown Interupt
The following are for boot block in Flash ROM
E0h Initialize the chipset
POST Routine Description
7 Tests and Error Messages
Order in Which POST Tests Are Performed
Beep
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