7. BIOS Setup
76
SPC-8450-LVA
POST
(hex)
Description
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
29h
1.
Program CPU internal MTRR (P6 & PII) for 0~640K memory address.
2.
Initialize the APIC for Pentium class CPU.
3.
Program early chipset according to CMOS setup. Example: onboard IDE controller.
4.
Measure CPU speed.
5.
Invoke video BIOS.
Summary of Contents for SPC-8450-LVA
Page 7: ...vi SPC 8450 LVA...
Page 31: ...3 Hardware Installations 24 SPC 8450 LVA...
Page 37: ...4 Jumper Setting 30 SPC 8450 LVA...