American Megatrends MAN-758 manual Bootblock Code Checkpoint Codes, Description

Bootblock Code Checkpoint Codes

Code	Description
E0h	VerifytheBootBlockBIOSchecksum.Disabletheinternalcache,DMA,
	and interrupt controllers. Initialize the system timer. Startmemoryrefresh.
E1h	Initialize the chipset registers. Set the BIOS size to 128K. Make the 512
	KBbasememoryavailable.
E2h	Test the base 64KBofsystemmemory.SendtheBATcommandtothe
	keyboardcontroller.Makesurethat<Ctrl><Home>waspressed.Verifythe
	mainsystemBIOSchecksum.
E3h	ThemainsystemBIOSisgood.TransfercontroltothemainsystemBIOS.
E4h	Startthememorytest.
E5h	The memory test is over. Initialize the interrupt vector table.
E6h	Initialize the DMA and interrupt controllers.
E7h	DeterminetheCPUinternalclockfrequency.
E8h	Initialize the I/O chipset, if any.
E9h	ProgramtheCPUclock-dependentchipsetparameters.
EAh	Enable the timer and the floppy diskette interrupt. Enable the internal
	cache. Copy the boot block BIOS and pass control to the boot block BIOS
	in the 0000h segment.
EDh	Initialize the floppy drive.
EEh	Look for a diskette in drive A:. Read the first sector of the diskette.
EFh	Floppy read error.
F0h	Search for S758P.ROM in the root directory of the floppy diskette in drive
	A:.
F1h	The S758P.ROM file is not in the root directory.
F2h	ReadtheFATtable.AnalyzetheFATtofindtheclusters occupiedbythe
	S758P.ROM.
F3h	Start reading the S758P.ROM file, cluster by cluster.
F4h	TheS758P.ROMfileisnotthecorrectsize.
F5h	Disable the internal cache. Raise the Vpp. Enable Flash write and reset the
	Flash ROM.
FBh	Detect the flash type.
FCh	Start erasing flash blocks.
FDh	ProgramtheFlashROMintheE0000-EFFFFhregion.
FEh	StartprogrammingFlashatF0000-FFFFFregion.
FFh	Flashprogrammingissuccessful.Thecomputerreboots.

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