American Megatrends Atlas PCI-II, User Manual

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Atlas PCI-II Motherboard User’s Guide 76
Programming the Flash ROM,
Continued
S727P.ROM S727P.ROM resides on a floppy disk and contains
the updated main BIOS code. American Megatrends
will provide this file when the AMIBIOS for the
Atlas PCI-II ISA motherboard must be updated.
S727P.ROM must be present in the root directory of
the floppy disk before the onboard Flash EPROM
can be reprogrammed. The file that has the main
BIOS code must be named S727P.ROM.
Sequence of Operation The sequence of operation and expected
behavior of the boot block BIOS code is:
Step Expected behavior
1 Look for floppy
disk. The system beeps one time before the
BIOS attempts to read from floppy drive
A:.
2 Look for
S727P.ROM on the
floppy disk. S727P.ROM must be in the root directory
of the floppy disk in drive A:. There is no
beep if successful.
3 Read the floppy
disk. The floppy disk is read. There is no beep
if this step is successful.
4 Check for BIOS
file size. The BIOS file size is checked. There is no
beep if this step is successful.
5 Check for Flash
EPROM. The BIOS looks for an Intel i28F001BX-T
Flash EPROM. It does not beep if this
step is successful.
6 Erase the Flash
EPROM. Two beeps sound when the BIOS begins
erasing the Flash EPROM.
7 Program the Flash
EPROM. Three beeps sound when the AMIFlash
Code begins reprogramming the Flash
EPROM.
8 Continue
programming the
Flash EPROM. Four beeps sound when reprogramming
has been successfully completed.
9 AMIFlash does a
reset. A CPU reset is generated to reboot the
computer.