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Load Defaults
This option allows you to load the default values for each of the parameters
on the Setup menu. When this option is selected or if <F9> is pressed, a
confirmation is requested. Select [Ok] to load default values. You can now
select Exit Saving Changes or make other changes before saving the values
to the non-volatile RAM.
Test Points Codes
At the beginning of each POST routine, the BIOS outputs the test point error
code to I/O port address 80h. Use this code during trouble shooting to
establish where the system failed and what routine has been performed.
Bootblock Initialization Code Checkpoints
POST Code
Description
(Hex)
D0
Early Boot Strap Processor initialization like microcode update,
frequency and other CPU critical initialization. Early chipset
initialization is done.
D1
Early super I/O init is done including RTC and keyboard controller.
NMI is disabled. Perform keyboard controller BAT test. Save
power-on CPUID value in scratch CMOS. Go to flat mode with 4
GB limit and GA 20 enabled.
D2
Verify the boot block checksum. System will hang here if check-
sum is bad.
D3
Disable CACHE before memory detection. Execute full memory
sizing module. Start memory refresh and do additional chipset
initialization. Re-enable CACHE.
D4
Test base 512 KB memory. Adjust cache first 8 MB and set stack.
D5
Bootblock code is copied from ROM to lower system and control is
given to it. BIOS now executes out of RAM. Copies BIOS from
ROM to RAM for faster access. Perform main BIOS checksum
and updates recovery status accordingly.
D6
If BIOS recovery is necessary, control flows to the recovery
module.
D7
Restore CPUID value back into register. The Bootblock-Runtime
interface module is moved to system memory and control is given
to it.
D8
The Runtime module is uncompressed into memory. CPUID
information is stored in memory.
D425-CPU-Desktop
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