BIOS Setup Information
PEB-7431VL User’s Manual
4-24
CODE (hex)
DESCRIPTION
Enable keyboard interface.
09h
Reserved
0Ah
Disable PS/2 mouse interface (optional). Auto detect ports for
keyboard & mouse followed by a port & interface swap (optional).
Reset keyboard for Winbond 977 series Super I/O chips.
0Bh Reserved
0Ch Reserved
0Dh Reserved
0Eh
Test F000h segment shadow to see whether it is R/W-able or not. If
test fails, keep beeping the speaker.
0Fh Reserved
10h
Auto detect flash type to load appropriate flash R/W codes into the
run time area in F000 for ESCD & DMI support.
11h Reserved
12h
Use walking 1’s algorithm to check out interface in CMOS circuitry.
Also set real-time clock power status, and then check for override.
13h Reserved
14h
Program chipset default values into chipset. Chipset default values
are MODBINable by OEM customers.
15h Reserved
16h Initial
Early_Init_Onboard_Generator switch.
17h Reserved
18h
Detect CPU information including brand, SMI type (Cyrix or Intel)
and CPU level (586 or 686).
19h Reserved
1Ah Reserved
1Bh
Initial interrupts vector table. If no special specified, all H/W
interrupts are directed to SPURIOUS_INT_HDLR & S/W interrupts
to SPURIOUS_soft_HDLR.
1Ch Reserved
1Dh Initial
EARLY_PM_INIT
switch.
1Eh Reserved
1Fh
Load keyboard matrix (notebook platform)
20h Reserved
21h
HPM initialization (notebook platform)
22h Reserved
23h
Check validity of RTC value:
e.g. a value of 5Ah is an invalid value for RTC minute.
Load CMOS settings into BIOS stack. If CMOS checksum fails, use
default value instead.
Prepare BIOS resource map for PCI & PnP use. If ESCD is valid,
take into consideration of the ESCD’s legacy information.
Onboard clock generator initialization. Disable respective clock
resource to empty PCI & DIMM slots.
