HP Kayak XU Technical Reference Manual page 75

Checkpoint
Code
9Fh Determine number of ATA and SCSI drives
A0h Set time of day
A2h Check key lock
A4h Initialize typematic rate
A8h Erase F2 prompt
AAh Scan for F2 key stroke
ACh Enter SETUP
AEh Clear IN POST flag
B0h Check for errors
B2h POST done - prepare to boot operating system
B5H Terminate QuietBoot
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
5 Power-On Self-Test and Error Messages
Order in Which the Tests are Performed
POST Routine Description
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