User’s Guide
BIOS Setup
4-35
POST(hex)
Description
32
1. Display the Award Plug & Play BIOS Extension message
(PnP BIOS only)
2. Program all onboard super I/O chips (if any) including COM
ports, LPT ports, FDD port... according to setup value
33-3B
Reserved
3C
Set flag to allow users to enter CMOS Setup Utility
3D
1. Initialize Keyboard
2. Install PS2 mouse
3E
Try to turn on Level 2 cache
Note: Some chipset may need the L2 cache to be turned on
in this stage. But usually, the cache is turned on later
in POST 61h
3F-40
Reserved
BF
1. Program the rest of the Chipset value according to Setup.
(Later Setup Value Program)
2. If auto-configuration is enabled, programmed the chipset
with predefined values in the MODBINable Auto-Table
41
Initialize floppy disk drive controller
42
Initialize Hard drive controller
43
If it is a PnP BIOS, initialize serial & parallel ports
44
Reserved
45
Initialize math coprocessor.
46-4D
Reserved
4E
If there is any error detected (such as video, kb...), show
all the error messages on the screen & wait for user to
press <F1> key
4F
1. If password is needed, ask for password
2. Clear the Energy Star Logo (Green BIOS only)
50
Write all CMOS values currently in the BIOS stack area
back into the CMOS
51
Reserved
52
1. Initialize all ISA ROMs
2. Later PCI initializations (PCI BIOS only)
-assign IRQ to PCI devices
-initialize all PCI ROMs
3. PnP Initializations (PnP BIOS only)
-assign IO, Memory, IRQ & DMA to PnP ISA devices
-initialize all PnP ISA ROMs
4. Program shadows RAM according to Setup settings
5. Program parity according to Setup setting
6. Power Management Initialization
-Enable/Disable global PM
-APM interface initialization
53
1. If it is NOT a PnP BIOS, initialize serial & parallel ports
2. Initialize time value in BIOS data area by translate the
RTC time value into a timer tick value
60
Setup Virus Protection (Boot Sector Protection) f
unctionality according to Setup setting
