User`s manual

Appendix B: BIOS POST Codes
B-5
POST Code Description
A8h Erase <ESC> prompt
AAh Scan for <ESC> key stroke
ACh Enter SETUP
AEh Clear Boot ag
B0h Check for errors
B1h Inform RomPilot about the end of POST (optional)
B2h POST done - prepare to boot operating system
B4h 1 One short beep before boot
B5h Terminate QuietBoot (optional)
B6h Check password (optional)
B7h Initialize ACPI BIOS and PPM Structures
B9h Prepare Boot
BAh Initialize SMBIOS
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 ags
C6h Console redirection init.
C7h Unhook INT 10h if console redirection enabled
C8h Force check (optional)
C9h Extended ROM checksum (optional)
CDh Reclaim console redirection vector
D2h Unknown interrupt
D4h Check Intel Branding string
D8h Alert Standard Format initialization
D9h Late init for IPMI
DEh Log error if micro-code not updated properly