ATX MB-i965Q, User Manual

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BIOS
The Bootblock recovery code gets control when the BIOS determnes that
a BIOS recovery needs to occur because the user has forced the update
or the BIOS checksum s corrupt. The followng table descrbes the type of
checkponts that may occur durng the Bootblock recovery porton of the
BIOS
(Note)
:
Checkpoint Description
E0
Initialize the floppy controller in the super I/O. Some interrupt
vectors are ntalzed. DMA controller s ntalzed. 829
nterrupt controller s ntalzed. L2 cache s enabled.
E9 Set up floppy controller and data. Attempt to red from floppy.
EA
Enable ATAPI hardware. Attempt to read from ARMD and
ATAPI CDROM.
EB Dsable ATAPI hardware. Jump back to checkpont E9.
EF Read error occurred on meda. Jump back to checkpont EB.
F0 Search for pre-defined recovery file name in root directory.
F Recovery file not found.
F2
Start reading FAT table and analyze FAT to find the clusters
occupied by the recovery file.
F3 Start reading the recovery file cluster by cluster.
F Dsable L cache.
FA
Check the validity of the recovery file configuration to the
current configuration of the flash part.
FB
Make flash write enabled through chipset and OEM specific
method. Detect proper flash part. Verify that the found flash
part size equals the recovery file size.
F4 The recovery file size does not equal the found flash part size.
Bootblock Recovery Code Checkpoints