User's Manual

53
POST (hex) Description
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 1. 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.
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 into C000:0.
24h Reserved
25h Reserved
26h Reserved
27h Initialize INT 09 buffer
28h Reserved