2Eh

 

1-3-4-3

. RAM failure on

 

 

data bits of low byte of

 

 

memory bus

2Fh

Enable cache before

 

 

system BIOS shadow

 

 

 

 

30h

 

1-4-1-1

. RAM failure on

 

 

data bits of high byte of

 

 

memory bus

Code

 

Beeps / Description

6Ah

Display external L2 cache

 

 

size

6Bh

Load custom defaults

 

 

(optional)

6Ch

Display shadow-area

 

 

message

6Eh

 

Display possible high

 

 

address for UMB recovery

70h

 

Display error messages

72h

 

Check for configuration

 

 

errors

76h

 

Check for keyboard errors

7Ch

Set up hardware interrupt

 

 

vectors

7Eh

 

Initialize coprocessor if

 

 

present

80h

 

Disable onboard Super I/O

 

 

ports and IRQs

81h

Late POST device

 

 

initialization

82h

 

Detect and install external

 

 

RS232 ports

83h

Configure non-MCD IDE

 

 

controllers

84h

Detect and install external

 

 

parallel ports

85h

 

Initialize PC-compatible

 

 

PnP ISA devices

86h.

 

Re-initialize onboard I/O

 

 

ports.

87h

Configure Motherboard

 

 

Devices

88h

 

Initialize BIOS Data Area

 

 

 

89h

 

Enable Non-Maskable

 

 

Interrupts (NMIs)

8Ah

 

Initialize Extended BIOS

 

 

Data Area

8Bh

Test and initialize PS/2

 

 

mouse

8Ch

 

Initialize floppy controller

 

 

 

8Fh

 

Determine number of ATA

 

 

drives (optional)

90h

 

Initialize hard-disk

 

 

controllers

91h

 

Initialize local-bus hard-disk

 

 

controllers

67h

Initialize Multi Processor

 

APIC

 

 

68h

Enable external and CPU

 

caches

69h

Setup System Management

 

Mode (SMM) area

 

 

Code

Beeps / Description

A2h

Check key lock

 

 

A4h

Initialize Typematic rate

 

 

A8h

Erase F2 prompt

 

 

AAh

Scan for F2 key stroke

 

 

ACh

Enter SETUP

AEh

Clear Boot flag

 

 

B0h

Check for errors

B2h

POST done - prepare to

 

boot operating system

B4h

One short beep before boot

 

 

B5h

Terminate QuietBoot

 

(optional)

B6h

Check password (optional)

 

 

B9h

Prepare Boot

 

 

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

 

handler

C5h

PnPnd dual CMOS

 

(optional)

C6h

Initialize notebook docking

 

(optional)

68

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