Intel 430TX User Manual

Page 25

3. Read CMOS data into BIOS stack area
4. PnP initializations including (PnP BIOS only)

-Assign CSN to PnP ISA card
-Create resource map from ESCD

5. Assign IO & Memory for PCI devices (PCI BIOS only)

Initialization of the BIOS Data Area (40 : 0N

−

40:FF)

1. Program some of the Chipset’s value according to Setup.
(Early Setup Value Program)
2. Measure CPU speed for display & decide the system
clock speed
3. Video initialization including Monochrome,CGA,EGA / VGA.
If no display device found, the speaker will beep

1. Initialize the APIC (Multi-Processor BIOS only)
2. Test video RAM (If Monochrome display device found)
3. Show messages including:

-Award Logo, Copyright string, BIOS Date code
& Part No.
-OEM specific sign on messages
-Energy Star Logo (Green BIOS ONLY)
-CPU brand, type & speed

-Test system BIOS checksum(Non-
Compress
Version only)

DMA channel 0 test

DMA channel 1 test

DMA page registers test

12-13

Reserved

Test 8254 Timer 0 Counter 2.

Test 8259 interrupt mask bits for channel 1

Test 8259 interrupt mask bits for channel 2

Reserved

Test 8259 functionality

1A-
1D

Reserved