59
Code(hex) Name
Description
7C
HDD Check for
Write protection
HDD check out
7D Reserved
7E Reserved
7F
POST error check
Check POST error and display them
and ask for user intervention
80 Reserved
81 Reserved
82
Security Check
Ask password security (optional).
83
Write CMOS
Write all CMOS values back to RAM and
clear screen.
84
Pre-boot Enable
Enable parity checker
Enable NMI, Enable cache before boot.
85
Initialize
Initialize any option ROMs present
Option ROMs from C8000h to EFFFFh.
NOTE: When FSCAN option is enabled,
ROMs initialize from C8000h to F7FFFh.
86 Reserved
87 Reserved
88 Reserved
89 Reserved
8A Reserved
8B Reserved
8C Reserved
8D Reserved
8E Reserved
8F Reserved
90 Reserved
91 Reserved
92 Reserved
93 Boot
Medium
detection
Read and store boot partition head and
cylinders values in RAM
94
Final Init
Final init for last micro details
before boot
95
Special KBC patch
Set system speed for boot
Setup NumLock status according to
Setup
96
Boot Attempt
Set low stack
Boot via INT 19h.
FF Boot
Quick POST Codes
Code(hex) Name
Description
65 Init
onboard
device
Early Initialized the super IO
Reset Video controller
Keyboard controller init
Test the Keyboard Initialized the
mouse Onboard audio controller
initialize if exist. Check the
intergraty of the ROM, BIOS and
message Check Flash type and copy
flash write/erase routines to 0F000h
segments Check Cmos Circuitry and
reset CMOS Program the chipset
registers with CMOS values
Init onboard clock generator
