POST Routine Description
Verify Real Mode
Disable 
Get CPU type
Initialize system hardware
Initialize chipset with Initial POST values
Set IN POST flag
Initialize CPU registers
Enable CPU cache
Initialize caches to initial POST values
Initialize I/O component
Initialize the local bus IDE
Initialize Power Management
Load alternate registers with initial POST values
Restore CPU control word during warm boost
Initialize PCI Bus Mastering devices
Initialize keyboard controller
BIOS ROM Checksum
Initialize cache before memory autosize
8254 timer initialization
8237 DMA controller initialization
Reset Programmable Interrupt Controller
Test DRAM refresh
Test 8742 Keyboard Controller
Set ES segment register to 4 GB
Enable A20 line
Autosize DRAM
Initialize POST Memory Manager
Clear 512 KB base RAM
RAM failure on address line 
Enable cache before system BIOS shadow
Test CPU 
Initialize Phoenix Dispatch Manager
Warm start shut down
Shadow system BIOS ROM
Autosize cache
Advanced configuration of chipset registers
Load alternate registers with CMOS values
Initialize interrupt vectors
POST device initialization
Check ROM copyright notice
Check Video configuration against CMOS
Initialize PCI bus and devices
Initialize all video adapters in system
QuietBoot start (optional)
Shadow video BIOS ROM
Display BIOS copyright notice
Display CPU type and speed
Initialize EISA board
Test keyboard
Set key click if enabled
Test for unexpected interrupts
Initialize POST display service
Display prompt "Press F2 to enter SetUP"
Disable CPU cache
Test RAM between 512 and 640 KB
Test extended memory
Test extended memory address lines
Jump to UserPatchI
Configure advanced cache registers
Initialize Multi Processor APIC
Enable external and CPU cache
Setup System Management Mode (SMM) area
Display external L2 cache size
Load custom defaults (optional)
Display 
Display possible high address for UMB recovery
Display error messages
Check for configuration errors
Check for keyboard errors
Set up hardware interrupt vectors
Initialize coprocessor if present
Disable onboard Super I/O ports and IRQs
Late POST device initialization
Detect and install external RS232 ports
Configure 
Detect and install external parallel ports
Initialize 
Reinitialize onboard I/O ports
Configure Motherboard Configurable Devices (optional)
Initialize BIOS Data Area
Enable 
Initialize Extended BIOS Data Area
Test and initialize PS/2 mouse
Initialize floppy controller
Determine number of ATA drives (optional)
Initialize hard disk controllers
Initialize 
Jump to UserPatch2
Build MPTABLE for 
Install CD ROM for boot
Clear huge ES segment register
Fixup Multi Processor table
Check for SMART drive (optional)
Shadow option ROMs
Set up Power Management
Initialize security engine (optional)
Enable hardware interrupts
Determine number of ATA and SCSI drives
Set time of day
Check key lock
Initialize Typematic rate
Erase F2 prompt
Scan for F2 key stroke
Enter Setup
Clear Boot flag
Check for errors
POST done - prepare to boot operating system
One shot beep before boot
Terminate QuietBoot (optional)
Check password (optional)
Prepare Boot
Initialize DMI Parameters
Initialize PnP Option ROMs
Clear parity checkers
Display MultiBoot menu
Clear screen (optional)
check virus and back up reminders
Try to boot with INT 19
Initialize POST Error Manager (PEM)
Initialize error logging
Initialize error display function
Initialize system error handler
PnPnd dual CMOS (optional)
Initialize notebook docking (optional)
Initialize notebook docking late
Force check (optional)
Extended checksum (optional) 
Unknown interrupts1278, 1277 specifications
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