Chapter 3 Programming the Flash ROM
73
Programming the Flash ROM,
Continued
Sequence of Operation
The sequence of operation and expected behavior of the bootblock 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
S770P.ROM on the
floppy disk.
S770P.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.
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