HP Vectra VA 6/xxx HP Vectra VA 6/xxx and XA 6/xxx pc - technical reference ma - Page 32

Serial EEPROM, Updating the System ROM

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2 System Board Devices on the ISA Bus Serial EEPROM This is the non-volatile memory which holds the default values for the CMOS memory (in the event of battery failure, or the user pressing in Setup). When installing a new system board, the Serial EEPROM will have a blank serial number field. This will be detected automatically by the BIOS, which will then prompt the user to enter the serial number which is printed on the identification label on the back of the PC. Audio Controller The audio controller is provided, on the HP Vectra VA 6/xxx MT PC and HP Vectra XA 6/xxx PC, on a board in an ISA accessory slot, and is described in the next chapter. System ROM The PC uses 256 KB of 200ns, Flash EEPROM implemented within a single 256 K ! 8-bit ROM chip. Flash EEPROM is ROM that can be returned to its unprogrammed state by the application of appropriate electrical signals to its pins, and hence can then be reprogrammed with the latest upgrade firmware. The System ROM contains the system BIOS (including the boot code, the ISA and PCI initialization, RPO, DMI, the Setup program and the Power-On Self-Test routines, plus their error messages). These are summarized in Chapters 4 and 5. Updating the System ROM The System ROM can be updated with the latest BIOS firmware. This can be ordered from HP or downloaded from one of HP's online services. (For more information on HP's online services, refer to the Hewlett-Packard Support and Information Services chapter in the User's Guide that was supplied with the computer.) The System ROM is updated by running the PHLASH utility, PHLASH.EXE, which is supplied with the BIOS upgrade file, GZ07xx.FUL, and the system definition file, platform.bin. You must specify the model number of the PC since the utility which is supplied for a different model cannot be used with this one. It must be run from diskette. 24

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24
2
System Board
Devices on the ISA Bus
Serial EEPROM
This is the non-volatile memory which holds the default values for the CMOS
memory (in the event of battery failure, or the user pressing
in
Setup
).
When installing a new system board, the Serial EEPROM will have a blank
serial number field. This will be detected automatically by the BIOS, which
will then prompt the user to enter the serial number which is printed on the
identification label on the back of the PC.
Audio Controller
The audio controller is provided, on the
HP Vectra VA 6/xxx MT PC
and
HP Vectra XA 6/xxx PC
, on a board in an ISA accessory slot, and is
described in the next chapter.
System ROM
The PC uses 256 KB of 200ns, Flash EEPROM implemented within a single
256 K
8-bit ROM chip. Flash EEPROM is ROM that can be returned to its
unprogrammed state by the application of appropriate electrical signals to
its pins, and hence can then be reprogrammed with the latest upgrade
firmware.
The System ROM contains the system BIOS (including the boot code, the
ISA and PCI initialization, RPO, DMI, the
Setup
program and the Power-On
Self-Test routines, plus their error messages). These are summarized in
Chapters 4 and 5.
Updating the System ROM
The System ROM can be updated with the latest BIOS firmware. This can be
ordered from HP or downloaded from one of HP’s online services. (For more
information on HP’s online services, refer to the Hewlett-Packard Support
and Information Services chapter in the User’s Guide that was supplied with
the computer.)
The System ROM is updated by running the PHLASH utility,
PHLASH.EXE
,
which is supplied with the BIOS upgrade file,
GZ07xx.FUL
, and the system
definition file,
platform.bin
. You must specify the
model number
of the
PC since the utility which is supplied for a different model cannot be used
with this one. It must be run from diskette.