Advantech AIMB-250 Series 40. POST Codes, 40.1Normal POST Code, Code hex, Name, Description

AIMB-250 Series

40. POST Codes

Please take reference to Phoenix-Award website for the latest post codes.

http://www.phoenix.com/en/Customer+Services/BIOS/AwardBIOS/Award+Error+Codes.ht m

40.1Normal POST Code

Note: EISA POST codes are typically output to port address 300h. ISA POST codes are output to

port address 80h.

Code (hex)	Name	Description
C0	Turn Off Chipset and	OEM Specific-Cache control cache
	CPU test	Processor Status (1FLAGS) Verification. Tests the following
		processor status flags: Carry, zero, sign, overflow, the BIOS sets
		each flag, verifies They are set, then turns each flag off and
		verifies it is off.
		Read/Write/Verify all CPU registers except SS, SP, and BP with
		data pattern FF and 00. RAM must be periodically refreshed to
		keep the memory from decaying. This function ensures that the
		memory refresh function is working properly.
C1	Memory Presence	First block memory detect OEM Specific-Test to size on-board
		memory. Early chip set initialization Memory presence test OEM
		chip set routines clear low 64K of memory Test first 64K memory.
C2	Early Memory	OEM Specific- Board Initialization
	Initialization
C3	Extend Memory DRAM	OEM Specific- Turn on extended memory Initialization
	select	Cyrix CPU initialization, Cache initialization
C4	Special Display	OEM Specific- Display/Video Switch handling so that switch
	Handling	handling display switch errors never occurs
C5	Early Shadow	OEM specific- Early shadow enable for fast boot
C6	Cache presence test	External cache size detection
CF	CMOS Check	CMOS checkup
B0	Spurious	If interrupt occurs in protected mode.
B1	Unclaimed NMI	If unmasked NMI occurs, display Press F1 to disable NMI, F2
		reboot.
BF	Program Chip Set	To program chipset from defaults values
E1-EF	Setup Pages	E1- Page 1, E2 - Page 2, etc.
1	Force load Default to	Chipset defaults program
	chipset
2	Reserved

96 AIMB-250 Series User’s Manual