26
1E
If EISA NVM checksum is good, execute EISA initialization
(EISA BIOS only)
1F-29
Reserved
30
Detect Base Memory & Extended Memory Size
31
1. Test Base Memory from 256K to 640K
2. Test Extended Memory from 1M to the top of memory
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 to turn on the L2 cache in this
stage. But usually, the cache is turn on later in POST 61h
3F-40
Reserved
BF
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 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)