Advantech user manual AIMB-250 User’s Manual103

		User’s Manual
Code (hex)	Name	Description
72	Install FDD	Enter setup check and auto11 configuration check up Initialize
		floppy disk drive controller and any drives. Install FDD and setup
		BIOS data area parameters
73	Install FDD	Initialize hard drive controller and any drives. IDE device
		detection and install Initialize any serial and parallel ports (also
		game port).
74	Detect & Initialize Math	Initialize math coprocessor.
	Coprocessor
75	HDD Check for Write	HDD check out
	protection
76	Reserved
77	Display POST error	Check POST error and display them and ask for user intervention
		Ask password security (optional).
78	CMOS and Option	Write all CMOS values back to RAM and clear screen. Enable
	ROM Init	parity checker Enable NMI, Enable cache before boot. Initialize
		any option ROMs present from C8000h to EFFFFh.
		NOTE: When FSCAN option is enabled, ROMs initialize from
		C8000h to F7FFFh.
79	Reserved
7A	Reserved
7B	Reserved
7C	Reserved
7D	Boot Medium detection	Read and store boot partition head and cylinders values in RAM
7E	Final Init	Final init for last micro details before boot
7F	Special KBC patch	Set system speed for boot. Setup NumLock status according to
		Setup.
80	Boot Attempt	Set low stack Boot via INT 19h.
FF	Boot

AIMB-250 User’s Manual103