1-1-2-1 (04h): Get CPU type
1-1-2-3 (06h): Initialize system hardware
1-1-3-1 (08h): Initialize chipset registers with initial POST values
1-1-3-2 (09h): Set in POST flag
1-1-3-3 (0Ah): Initialize CPU registers
1-1-4-1 (0Ch): Initialize cache to initial POST values
1-1-4-3 (0Eh): Initialize I/O
1-2-1-1 (10h): Initialize Power Management
1-2-1-2 (11h): Load alternate registers with initial POST values
1-2-1-3 (12h): Jump to UserPatch0
1-2-2-1 (14h): Initialize keyboard controller
1-2-2-3 (16h): BIOS ROM checksum
1-2-3-1 (18h): 8254 timer initialization
1-2-3-3 (1Ah): 8237 DMA controller initialization
1-2-4-1 (1Ch): Reset Programmable Interrupt Controller
1-3-1-1 (20h): Test DRAM refresh
1-3-1-3 (22h): Test 8742 Keyboard Controller
1-3-2-1 (24h): Set ES segment register to 4 GB
1-3-3-1 (28h): Autosize DRAM
1-3-3-3 (2Ah): Clear 512K base RAM
1-3-4-1 (2Ch): Test 512 base address lines
1-3-4-3 (2Eh): Test 512K base memory
1-4-1-3 (32h): Test CPU bus-clock frequency
1-4-2-1 (34h): CMOS RAM read/write failure
1-4-2-4 (37h): Reinitialize the chipset
1-4-3-1 (38h): Shadow system BIOS ROM
1-4-3-2 (39h): Reinitialize the cache
1-4-3-3 (3Ah): Autosize cache
1-4-4-1 (3Ch): Configure advanced chipset registers
1-4-4-2 (3Dh): Load alternate registers with CMOS values
2-1-1-1 (40h): Set Initial CPU speed
2-1-1-3 (42h): Initialize interrupt vectors
2-1-2-1 (44h): Initialize BIOS interrupts
2-1-2-3 (46h): Check ROM copyright notice
2-1-2-4 (47h): Initialize manager for PCI Options ROMs
2-1-3-1 (48h): Check video configuration against CMOS
2-1-3-2 (49h): Initialize PCI bus and devices
2-1-3-3 (4Ah): Initialize all video adapters in system
2-1-4-1 (4Ch): Shadow video BIOS ROM
2-1-4-3 (4Eh): Display copyright notice
2-2-1-1 (50h): Display CPU type and speed
2-2-1-3 (52h): Test keyboard
2-2-2-1 (54h): Set key click if enabled
2-2-2-3 (56h): Enable keyboard
2-2-3-1 (58h): Test for unexpected interrupts
2-2-3-3 (5Ah): Display prompt "Press F2 to enter SETUP"
2-2-4-1 (5Ch): Test RAM between 512 and 640k
2-3-1-1 (60h): Test expanded memory
2-3-1-3 (62h): Test extended memory address lines
2-3-2-1 (64h): Jump to UserPatch1
2-3-2-3 (66h): Configure advanced cache registers
2-3-3-1 (68h): Enable external and CPU caches
2-3-3-2 (69h): Initialize SMI handler
2-3-3-3 (6Ah): Display external cache size
2-3-4-1 (6Ch): Display shadow message
2-3-4-3 (6Eh): Display non-disposable segments
2-4-1-1 (70h): Display error messages
2-4-1-3 (72h): Check for configuration errors
2-4-2-1 (74h): Test real-time clock
2-4-2-3 (76h): Check for keyboard errors
2-4-4-1 (7Ch): Set up hardware interrupts vectors
2-4-4-3 (7Eh): Test coprocessor if present
3-1-1-1 (80h): Disable onboard I/O ports
3-1-1-3 (82h): Detect and install external RS232 ports
3-1-2-1 (84h): Detect and install external parallel ports
3-1-2-3 (86h): Re-initialize onboard I/O ports
3-1-3-1 (88h): Initialize BIOS data area
3-1-3-3 (8Ah): Initialize extended BIOS data area
3-1-4-1 (8Ch): Initialize floppy controller
3-2-1-1 (90h): Initialize hard-disk controller
3-2-1-2 (91h): Initialize local-bus hard-disk controller
3-2-1-3 (92h): Jump to UserPatch2
3-2-2-1 (94h): Disable A20 address line
3-2-2-3 (96h): Clear huge ES segment register
3-2-3-1 (98h): Search for option ROMs
3-2-3-3 (9Ah): Shadow option ROMs
3-2-4-1 (9Ch): Set up Power Management
3-2-4-3 (9Eh): Enable hardware interrupts
3-3-1-1 (A0h): Set time of day
3-3-1-3 (A2h): Check key lock
3-3-3-1 (A8h): Erase F2 prompt
3-3-3-3 (AAh): Scan for F2 key stroke
3-3-4-1 (ACh): Enter SETUP
3-3-4-3 (AEh): Clear in-POST flag
3-4-1-1 (B0h): Check for errors
3-4-1-3 (B2h): POST done--prepare to boot operating system
3-4-2-1 (B4h): One beep
3-4-2-3 (B6h): Check password (optional)
3-4-3-1 (B8h): Clear global descriptor table
3-4-4-1 (BCh): Clear parity checkers
3-4-4-3 (BEh): Clear screen (optional)
3-4-4-4 (BFh): Check virus and backup reminders
4-1-1-1 (C0h): Try to boot with INT 19
4-2-1-1 (D0h): Interrupt handler error
4-2-1-3 (D2h): Unknown interrupt error
4-2-2-1 (D4h): Pending interrupt error
4-2-2-3 (D6h): Initialize option ROM error
4-2-3-1 (D8h): Shutdown error
4-2-3-3 (DAh): Extended Block Move
4-2-4-1 (DCh): Shutdown error
4-2-4-3 (DEh): Keyboard Controller Failure
4-3-1-3 (E2h): Initialize the chipset
4-3-1-4 (E3h): Initialize refresh counter
4-3-2-1 (E4h): Check for Forced Flash
4-3-2-2 (E5h): Check HW status of ROM
4-3-2-3 (E6h): BIOS ROM is OK
4-3-2-4 (E7h): Do a complete RAM test
4-3-3-1 (E8h): Do OEM initialization
4-3-3-2 (E9h): Initialize interrupt controller
4-3-3-3 (EAh): Read in bootstrap code
4-3-3-4 (EBh): Initialize all vectors
4-3-4-1 (ECh): Boot the Flash program
4-3-4-2 (EDh): Initialize the boot device
4-3-4-3 (EEh): Boot code was read OK