54 EmCORE-i612VLS/C400 User's Manual
25h 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
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
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