Peak 555A User’s Guide
BIOS Setup 4-
51
POST(hex)
Description
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
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
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)
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)
functionality according to Setup settin
