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Intel® Server Board SDS2 BIOS
Revision 1.2
Order Number: A85874-002
67
6.3.3 CMOS Memory Definition
The CMOS map is available in the NVRAM.LST file generated for every BIOS release. The
CMOS map is subject to change without notice.
6.3.4 Clearing CMOS
The BIOS detects the state of the CMOS jumper. If the jumper is set to “CMOS Clear” prior to
power-on or a hard reset, the BIOS changes the CMOS and NVRAM settings to a default state.
This guarantees the system’s ability to boot from floppy.
Password settings are unaffected through CMOS clear. The BIOS clears the ESCD parameter
block and loads a null ESCD image. The boot order information is also cleared when CMOS is
cleared via jumper. The configuration data for the on-board SCSI controllers is not cleared during
a clear CMOS event as each device controls its own default settings
If the Reset Configuration Data option is enabled in Setup, ESCD data and BIOS Boot
specification data is cleared and reinitialized in next boot.
6.4 Flash Update Utility
Note: The Phoenix* PHLASH utility must be run without the presence of a 386 protected mode
control program, such as Microsoft* Windows* NT* / 2000 or EMM386*. Phoenix* PHLASH
uses the processor’s flat addressing mode to update the flash ROM.
6.4.1 Loading the System BIOS
The BIOS update utility (PHLASH) loads a new copy of the BIOS into Flash ROM. The loaded
code and data include the following:
• On-board Video BIOS and SCSI BIOS
• BIOS Setup Utility
• Quiet Boot Logo Area
When running PHLASH in interactive mode, the user may choose to update a particular Flash
area. Updating a flash area takes a file or series of files from a hard or floppy disk, and loads it in
the specified area of Flash ROM.
To manually load a portion of the BIOS, the user must specify which data file(s) to load. The
choices include PLATCBLU.BIN, PLATCXLU.BIN, PLATCXXX.BIN, PLATCXLX.BIN or
PLATCXXU.BIN. The last three letters specify the functions to perform during the flash process:
C = Rewrite BIOS
B = Rewrite Boot block
L = Clear LOGO area
U = Clear user binary
X = place hold