MSI 612BF Manual - Página 39

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Também para MSI 612BF: Manual do utilizador (48 páginas)

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POST (hex)

fails, keep beeping the speaker.

0Fh

Reserved

Auto detect flash type to load appropriate flash R/W codes into the run time

10h

area in F000 for ESCD & DMI support.

11h

Reserved

Use walking 1's algorithm to check out interface in CMOS circuitry.

12h

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

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.

Description