Initialization of the Bios Data Area on 40FF

Appendix		KP6-LA
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 speed.
	3.	Video initialization including Monochrome, CGA, EGA/VGA. If
	no display device found, the speaker will beep.
0E	1. Test video RAM. (If Monochrome display device found)
	2. Show messages including.
	- 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)
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

Initialization of the BIOS Data Area. (40:ON - 40:FF)