6 BIOS Setup
SIS-8601-LVA
77
POST
(hex)
Description
26h
1. If Early_Init_Onboard_Generator is not defined
Onboard clock generator initialization. Disable respective
Clock resource to empty PCI & DIMM slots.
2. init onboard PWM .
3. Init onboard H/W monitor devices
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.
2Ah Reserved
2Bh Invoke Video BIOS .
2Ch Reserved
2Dh
1. Initialize double-byte language font (Optional)
2. Put information on screen display, including Award title, CPU type, CPU speed , full
screen logo
2Eh Reserved
2Fh Reserved
30h Reserved
31h Reserved
32h Reserved
33h
Reset keyboard if Early_Reset_KB is defined e.g. Winbond 977
series Super I/O chips. See also POST 63h
34h Reserved
35h Test DMA Channel 0 .
36h Reserved
37h Test DMA Channel 1 .
38h Reserved
39h Test DMA page registers .
3Ah Reserved
3Bh Reserved
3Ch Test 8254
3Dh Reserved
3Eh Test 8259 interrupt mask bits for channel 1.
3Fh Reserved
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