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A.1
Tableau des codes de débogage
Code
Description
CPU INIT
CPU Initiation
DET CPU
Test CMOS R/W functionality.
Early chipset initialization:
-Disable shadow RAM
CHIPINIT
-Disable L2 cache (socket 7 or below)
-Program basic chipset registers
Detect memory
DET DRAM
-Auto-detection of DRAM size, type and ECC.
-Auto-detection of L2 cache (socket 7 or below)
DC FCODE
Expand compressed BIOS code to DRAM
EFSHADOW
Call chipset hook to copy BIOS back to E000 & F000 shadow RAM.
DC XCODE
Expand the Xgroup codes locating in physical address 000:0
INIT IO
Initial Superio_Early_Init
. Blank out screen
CLR SCRN
2. Clear CMOS error flag
. Clear 8042 interface
INIT8042
2. Initialize 8042 self-test
. Test special keyboard controller for Winbond 977 series Super I/O chips.
ENABLEKB
2. Enable keyboard interface.
. Disable PS/2 mouse interface (optional).
2. Auto detect ports for keyboard & mouse followed by a port & interface
DIS MS
swap (optional).
3. Reset keyboard for Winbond 977 series Super I/O chips.
Test F000h segment shadow to see whether it is R/W-able or not. If test
R/W FSEG
fails, keep beeping the speaker.
Auto detect flash type to load appropriate flash R/W codes into the run time
DET FLASH
area in F000 for ESCD & DMI support.
Use walking 1's algorithm to check out interface in CMOS circuitry. Also set
TESTCMOS
real-time clock power status, and then check for override.
Program chipset default values into chipset. Chipset default values are
PRG CHIP
MODBINable by OEM customers.
INIT CLK
Initial Early_Init_Onboard_Generator switch.
Detect CPU information including brand, SMI type (Cyrix or Intel) and CPU
CHECKCPU
level (586 or 686).
Initial interrupts vector table. If no special specified, all H/W
INTRINIT
interrupts are directed to SPURIOUS_INT_HDLR & S/W interrupts to
SPURIOUS_soft_HDLR.
REC MPS
Initial EARLY_PM_INIT switch.
Reserved
Load keyboard matrix (notebook platform)
Reserved
HPM initialization (notebook platform)
. Check validity of RTC value:
e.g. a value of 5Ah is an invalid value for RTC minute.
2. Load CMOS settings into BIOS stack. If CMOS checksum fails, use
default value instead.
3. Prepare BIOS resource map for PCI & PnP use. If ESCD is valid, take
into consideration of the ESCD's legacy information.
SET FDD
4. Onboard clock generator initialization. Disable respective clock resource
to empty PCI & DIMM slots.
5. Early PCI initialization:
-Enumerate PCI bus number
-Assign memory & I/O resource
-Search for a valid VGA device & VGA BIOS, and put it nto C000:0.
INITINT9
Initialize INT 09 buffer
ASUS Crosshair
switch.
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