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3. Read CMOS data into BIOS stack area
4. PnP initializations including (PnP BIOS only)
5. Assign IO & Memory for PCI devices (PCI BIOS only)
0C
Initialization of the BIOS Data Area (40 : 0N
0D
1. Program some of the Chipset's value according to Setup.
(Early Setup Value
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
0E
1. Initialize the APIC (Multi-Processor BIOS only)
2. Test video RAM (If Monochrome display device found)
3. Show messages including:
Compress
0F
DMA channel 0 test
10
DMA channel 1 test
11
DMA page registers test
12-13
Reserved
14
Test 8254 Timer 0 Counter 2.
15
Test 8259 interrupt mask bits for channel 1
16
Test 8259 interrupt mask bits for channel 2
17
Reserved
19
Test 8259 functionality
1A-
Reserved
1D
-Assign CSN to PnP ISA card
-Create resource map from ESCD
-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
Program)
system
BIOS
Version only)
40:FF)
checksum(Non-
25
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