EPOX EP-6VBA User Manual page 62

A pentium ii or pentium iii slot1 processor based agp mainboar mainboard (100/66mhz) d (100/66mhz) supports pc-133 sdram module
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Appendix
0C
Initialization of the BIOS Data Area. (40:ON - 40:FF)
0D
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
3. Video initialization including Monochrome, CGA, EGA/VGA.
0E
1. Test video RAM. (If Monochrome display device found)
2. Show messages including.
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-
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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-1D
Reserved.
1E
If EISA NVM checksum is good, execute EISA initialization.
(EISA BIOS only)
1F-29
Reserved.
30
Detect Base Memory & Extended Memory Size.
31
1. Test Base Memory from 256K to 640K.
2. Test Extended Memory from 1M to the top of memory.
32
1. Display the Award Plug & Play BIOS Extension message.
(PnP BIOS only)
2. Program all onboard super I/O chips (if any) including COM
ports, LPT ports, FDD port ... according to setup value.
33-3B
Reserved.
3C
Set flag to allow users to enter CMOS Setup Utility.
3D
1. Initialize Keyboard.
2. Install PS2 mouse.
A-6
speed.
If no display device found, the speaker will beep.
Award Logo, Copyright string, BIOS Data 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)
EP-6VBA

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