| 02 |
Verify real
mode |
| 03 |
Disable NMI |
| 04 |
Get processor
type |
| 06 |
Initialize
system hardware |
| 08 |
Initialize
chipset with POST values |
| 09 |
Set IN-POST
flags |
| 0A |
Initialize
CPU registers |
| 0B |
Enable CPU
registers |
| 0C |
Initialize
cache to POST values |
| 0E |
Initialize
I/O component |
| 0F |
Initialize
local IDE bus |
| 10 |
Initialize
power management |
| 11 |
Load alternate
registers |
| 12 |
Restore CPU
control word during warm boot |
| 13 |
Initialize
PCI bus mastering devices |
| 14 |
Initialize
keyboard controller |
| 16 |
BIOS ROM
checksum |
| 17 |
Initialize
cache before memory size |
| 18 |
Initialize
8254 timer |
| 1A |
Initialize
DMA controller |
| 1C |
Reset PIC |
| 20 |
Test DRAM
refresh |
| 22 |
Test 8742
keyboard controller |
| 24 |
Set ES segment
register to 4GB |
| 26 |
Enable A-20
line |
| 28 |
Autosize
DRAM |
| 29 |
Initialize
POST memory manager |
| 2A |
Clear 512K
base RAM |
| 2C |
RAM address
line failure |
| 2E |
RAM data
failure, low byte |
| 2F |
Enable cache
before BIOS shadow |
| 30 |
RAM data
failure, high byte |
| 32 |
Test CPU,
BUS clock frequency |
| 33 |
Initialize
POST dispatch manager |
| 34 |
Test CMOS
RAM |
| 35 |
Initialize
alternate chipset registers |
| 36 |
Warm start
shut-down |
| 37 |
Reinitialize
chipset (MB only) |
| 38 |
Shadow system
BIOS ROM |
| 39 |
Reinitialize
cache (MB only) |
| 3A |
Autosize
cache |
| 3C |
Configure
advanced chipset registers |
| 3D |
Load alternate
registers new CMOS values |
| 40 |
Set initial
CPU speed |
| 42 |
Initialize
interrupts |
| 44 |
Initialize
BIOS interrupts |
| 45 |
POST device
initialization |
| 46 |
Check ROM
copyright notice |
| 47 |
Initialize
manager for PCI option ROM's |
| 48 |
Check video
config against CMOS |
| 49 |
Initialize
manager for PCI option ROM's |
| 4A |
Initialize
all video adapters |
| 4B |
Display quiet
boot screen |
| 4C |
Shadow video
BIOS |
| 4E |
Display BIOS
copyright notice |
| 50 |
Display CPU
type & speed |
| 51 |
Initialize |
| 52 |
Test keyboard |
| 54 |
Set key click
if enabled |
| 56 |
Enable keyboard |
| 58 |
Test for
unexpected interrupts |
| 59 |
Initialize
POST display service |
| 5A |
Display "Press
F2 to Enter Setup" |
| 5B |
Disable CPU
cache |
| 5C |
Test RAM,
512-640K |
| 60 |
Test extended
memory |
| 62 |
Test extended
memory address lines |
| 64 |
Jump to user
patch 1 |
| 66 |
Configure
advanced cache registers |
| 67 |
Initialize
multi-processor APIC |
| 68 |
Enable external
& processor caches |
| 69 |
Set up SMM
area |
| 6A |
Display external
L2 cache size |
| 6C |
Display shadow
area message |
| 6E |
Display high
address for UMB recovery |
| 70 |
Display error
message |
| 72 |
Check for
configuration errors |
| 74 |
Test real
time clock |
| 76 |
Check for
keyboard errors |
| 7A |
Test for
key lock on |
| 7C |
Set up hardware
interrupt vectors |
| 7E |
Initialize
coprocessor, if present |
| 80 |
Disable onboard
super I/O ports |
| 81 |
Late POST
device initialization |
| 82 |
Detect &
install external RS-232 ports |
| 83 |
Configure
non-MDC IDE controllers |
| 84 |
Detect &
install external parallel ports |
| 85 |
Initialize
PnP ISA devices |
| 86 |
Reinitialize
onboard I/O ports |
| 87 |
Configure
motherboard configurable devices |
| 88 |
Initialize
BIOS data area |
| 89 |
Enable NMI's |
| 8A |
Initialize
extended BIOS data area |
| 8B |
Test &
initialize PS/2 mouse |
| 8C |
Initialize
floppy controller |
| 8F |
Determine
number of ATA drives |
| 90 |
Initialize
hard disk controllers |
| 91 |
Initialize
local BUS HD controllers |
| 92 |
Jump to user
patch 2 |
| 93 |
Build MPTABLE
for multiprocessor boards |
| 94 |
Disable A-20
line |
| 95 |
Install CD-ROM
for boot |
| 96 |
Clear huge
ES segment register |
| 97 |
Fix up multiprocessor
table |
| 98 |
Search for
options ROM's |
| 99 |
Check for
smart drive |
| 9A |
Shadow ROM
option |
| 9C |
Set up power
management |
| 9E |
Enable hardware
interrupts |
| 9F |
Determine
number of ATA & SCSI drives |
| A0 |
Set time
of day |
| A2 |
Check key
lock |
| A4 |
Initialize
typematic rate |
| A8 |
Erase F2
prompt |
| AA |
Scan for
F2 keystroke |
| AC |
Enter SETUP |
| AE |
Clear IN-POST
flag |
| B0 |
Check for
errors |
| B2 |
POST done,
prepare for boot |
| B4 |
One short
beep before boot |
| B5 |
Terminate
quiet boot |
| B6 |
Check password
(optional) |
| B8 |
Clear global
descriptor table |
| B9 |
Clean up
all graphics |
| BA |
Initialize
DMI parameters |
| BB |
Initialize
PnP option ROM's |
| BC |
Clear parity
checkers |
| BD |
Display multi
boot menu |
| BE |
Clear screen
optional |
| BF |
Check virus
and backup reminders |
| C0 |
Try to boot
with Int 19 |
| C1 |
Initialize
POST error manager |
| C2 |
Initialize
error logging |
| C3 |
Initialize
error display function |
| C4 |
Initialize
system error handler |
| E0 |
Initialize
the chipset |
| E1 |
Initialize
the bridge |
| E2 |
Initialize
the processor |
| E3 |
Initialize
system timer |
| E4 |
Initialize
system I/O |
| E5 |
Check force
recovery boot |
| E6 |
Checksum
BIOS ROM |
| E7 |
Got to BIOS |
| E8 |
Set huge
segment |
| E9 |
Initialize
multiprocessor |
| EA |
Initialize
OEM special code |
| EB |
Initialize
PIC & DMA |
| EC |
Initialize
memory type |
| ED |
Initialize
memory type |
| EE |
Shadow boot
block |
| EF |
System memory
test |
| F0 |
Initialize
interrupt vectors |
| F1 |
Initialize
runtime clock |
| F2 |
Initialize
video |
| F3 |
Initialize
beeper |
| F4 |
Initialize
BOOT |
| F5 |
Clear huge
segment |
| F6 |
Boot to mini-DOS |
| F7 |
Boot to full
DOS |
