Acer Veriton 5600GT/5600V, Veriton 3600GT/3600V manual Checkpoint Description

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Checkpoint		Description
23h	1.	Check validity of RTC value:
		e.g. a value of 5Ah is an invalid value for RTC minute.
	2.	Load CMOS settings into BIOS stack. If CMOS checksum fails, use default value
		instead.
	3.	Prepare BIOS resource map for PCI & PnP use. If ESCD is valid, take into
		consideration of the ESCD’s legacy information.
	4.	Onboard clock generator initialization. Disable respective clock resource to empty PCI
		& DIMM slots.
	5.	Early PCI initialization
		-Enumerate PCI bus number
		-Assign memory & I/O resource
		-Search for a valid VGA device and VGA BIOS, and put it into C000:0
24h	Reserved
25h	Reserved
26h	Reserved
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.
	5.	Invoke video BIOS.
2Ah	Reserved
2Bh	Reserved
2Ch	Reserved
2Dh	1.	Initialize multi-language
	2.	Put information on screen display, including Award title, CPU type, CPU speed...
2Eh	Reserved
2Fh	Reserved
30h	Reserved
31h	Reserved
32h	Reserved
33h	Reset keyboard except Winbond 977 series Super I/O chips.
34h	Reserved
35h	Reserved
36h	Reserved
37h	Reserved
38h	Reserved
39h	Reserved
3Ah	Reserved
3Bh	Reserved
3Ch	Test 8254.
3Dh	Reserved
3Eh	Test 8259 interrupt mask bits for channel 1
3Fh	Reserved
40h	Test 8259 interrupt mask bits for channel 2
41h	Reserved
42h	Reserved

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