4-6 CHAPTER 4
POST(hex)
DESCRIPTION
32
33-3B
3C
3D
3E
3F-40
BF
41
42
43
44
45
46-4D
4E
4F
50
51
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.
Reserved.
Set flag to allow users to enter CMOS Setup Utility.
1.Initialize Keyboard.
2.Install PS2 mouse.
Try to turn on Level 2 cache.
Note : Some chipset may need to turn on the L2 cache in this stage. But
usually, the cache is turn on later in POST 61h.
Reserved.
1.Program the rest of the Chipset's value according to Setup. (Later Setup Value
Program)
2.If auto-configuration is enabled, programmed the chipset with pre-defined
Values.
Initialize floppy disk drive controller.
Initialize Hard drive controller.
If it is a PnP BIOS, initialize serial & parallel ports.
Reserved.
Initialize math coprocessor.
Reserved.
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.
1.If password is needed, ask for password.
2.Clear the Energy Star Logo. (Green BIOS only)
Write all CMOS values currently in the BIOS stack area back into the CMOS.
Reserved.
