American Megatrends MAN-758 Programming Flash ROM, Programming the Flash EPROM, Step, Action

3 Programming Flash ROM

All versions of the MegaRUM PCI motherboard use Flash EPROM to store the system BIOS. The advantage of Flash EPROM is the EPROM chip does not have to be replaced to update the BIOS. The end user can actually reprogram the BIOS, using a ROM file supplied by American Megatrends.

Programming the Flash EPROM

Step		Action
1	Turnpoweroff.Makesurethecomputerhasaworkingspeaker.
2	Insert the floppy disk with the S758P.ROM file in drive A:.
3	Pressandholdthe<Ctrl>and<Home>keys downwhileturningthepower on.
	Continue to hold the <Ctrl> and <Home> keys down until the access light on the
	floppy drive comes on. It may take 10 seconds or more before this light turns on.
4	Releasethe<Ctrl>and<Home>keys.AMIBIOSissuesaseriesofbeepcodesthat
	indicate that the system BIOS ROMfile is being updated.
5	WhentheflashROMhassuccessfullybeenprogrammed,thecomputerwillreboot.
6	Whenthecomputerreboots,checktheBIOSReleasetext at the bottom of the first
	bootscreentomakesurethatthecorrectBIOShasbeenused.
7	Theerrormessage
	NVRAM checksum bad, NVRAM cleared
	willappearduringthefirstbootafterasuccessfulBIOSROMupdate.This
	messageindicatesthattheNVRAMareainthesystemBIOShasbeencleared.
	AMIBIOSwillreconstructtheNVRAMareabeforethecomputerboots
	completely, soyou can safely ignore this message.
8	Load	the optional default and save.

Cont’d

Chapter 3 Programming the Flash ROM 79