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4 BIOS Overview
Order in Which the POST Tests are Performed
B6h Check password (optional)
B8h Clear global descriptor table
B9h Clean up all graphics
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
The following are for boot block in Flash ROM
E0h Initialize the chipset
E1h Initialize the bridge
E2h Initialize the CPU
E3h Initialize system timer
E4h Initialize system I/O
E5h Check force recovery boot
E6h Checksum BIOS ROM
E7h GotoBIOS
E8h Set Huge Segment
E9h Initialize Multi Processor
Checkpoint
Code
POST Routine Description