23
2 System Board
Devices on the ISA Bus
System ROM
The computer uses 256 KB of 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 firmware.
The System ROM contains: 64 KB of system BIOS (including the boot code,
the ISA and PCI initialization, DMI, the
Setup
program and the Power-On
Self-Test routines, plus their error messages); 32 KB of video BIOS; 32 KB of
Plug-and-Play code; and 32 KB of power management code. The functions
of these are summarized in Chapters 4 and 5.
Updating the System ROM
The System ROM can be updated with the latest BIOS. This can be ordered
from HP or downloaded from one of HP’s online services. (For more
information on HP’s electronic 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,
GX07xx.FUL
, and the system
definition file,
platform.bin
. You must specify the model
of the computer
since the utility which is supplied for a different model cannot be used with
this one.
Before flashing, it is necessary to type in the System Administrator’s
Password when starting up the computer. The
Phlash
utility must be run
from a diskette. The PCI and PnP information is erased in the process.
The procedure for performing the update is given in the
User’s Guide
that is
supplied with the computer.
Do not switch off the computer until the system BIOS update procedure has
completed, successfully or not, otherwise irrecoverable damage to the ROM
may be caused. The control panel switches are automatically disabled to
prevent accidental interruption of the flash programming process.
Содержание Vectra VE5 3
Страница 1: ...Technical Reference Manual Hardware and BIOS HP Vectra VE series 3 PC ...
Страница 8: ...Contents viii ...
Страница 16: ...8 1 System Overview Documentation ...