67
Code
Beeps / Description
Code
Beeps / Description
memory bus
2Fh
Enable cache before
system BIOS shadow
68h
Enable external and CPU
caches
30h
1-4-1-1. RAM failure on
data bits of high byte of
memory bus
69h
Setup System Management
Mode (SMM) area
6Ah
Display external L2 cache
size
A2h
Check key lock
6Bh
Load custom defaults
(optional)
A4h
Initialize Typematic rate
6Ch Display
shadow-area
message
A8h Erase
F2
prompt
6Eh
Display possible high
address for UMB recovery
AAh
Scan for F2 key stroke
70h
Display error messages
ACh
Enter SETUP
72h
Check for configuration
errors
AEh Clear
Boot
flag
76h
Check for keyboard errors
B0h
Check for errors
7Ch
Set up hardware interrupt
vectors
B2h
POST done - prepare to
boot operating system
7Eh
Initialize coprocessor if
present
B4h
One short beep before boot
80h
Disable onboard Super I/O
ports and IRQs
B5h Terminate
QuietBoot
(optional)
81h
Late POST device
initialization
B6h Check
password
(optional)
82h
Detect and install external
RS232 ports
B9h Prepare
Boot
83h
Configure non-MCD IDE
controllers
BAh
Initialize DMI parameters
84h
Detect and install external
parallel ports
BBh
Initialize PnP Option ROMs
85h
Initialize PC-compatible
PnP ISA devices
BCh
Clear parity checkers
86h.
Re-initialize onboard I/O
ports.
BDh Display
MultiBoot
menu
87h Configure
Motherboard
Devices
BEh
Clear screen (optional)
88h
Initialize BIOS Data Area
BFh
Check virus and backup
reminders
89h Enable
Non-Maskable
Interrupts (NMIs)
C0h
Try to boot with INT 19
8Ah
Initialize Extended BIOS
Data Area
C1h
Initialize POST Error
Manager (PEM)
8Bh
Test and initialize PS/2
mouse
C2h
Initialize error logging
8Ch
Initialize floppy controller
C3h
Initialize error display
function
8Fh
Determine number of ATA
drives (optional)
C4h
Initialize system error
handler
90h Initialize
hard-disk
controllers
C5h
PnPnd dual CMOS
(optional)
91h
Initialize local-bus hard-disk
controllers
C6h
Initialize notebook docking
(optional)
92h
Jump to UserPatch2
C7h
Initialize notebook docking
late
93h
Build MPTABLE for multi-
processor boards
C8h
Force check (optional)