30
2 System Board
Devices on the ISA Bus
Updating the System
ROM
The System ROM can be updated with the latest BIOS firmware. This can be
downloaded from HP’s World Wide Web site (refer to “Access HP World Wide
Web” on page 6). The BIOS is in the form
HB1xxxyy.FUL, where xxx is the
version number and
yy is the language number (the Setup utility and BIOS
are now available in 11 different european languages).
Before updating the system ROM, it is necessary to disable the “PSWRD”
switch on the system switches (SW-7), and to type in the System
Administrator’s Password when starting up the computer. The PCI and PnP
information is erased in the process.
Do not switch off the computer until the system BIOS update procedure has
completed. While updating the flash ROM, the power supply switch and the
reset button are disabled to prevent accidental interruption of the flash
programming process.
Little Ben
Little Ben is an HP application specific integrated circuit (ASIC), designed
to be a companion to the Ultra I/O chip, that is connected between the chip-
set and the processor. It contains the following:
• BIOS timer
❒ hardware wired 50 ms long 880 Hz beep module.
❒ automatic blinker that feeds the LEDs module with a 1 Hz oscillator
signal.
• security protection (access, flash and anti-virus protection)
❒ For 128, 256 or 512 KB Flash EEPROMs.
❒ For the Ultra I/O space: the Serial EEPROM, serial ports, parallel port
and mass storage drives (disable write on Flexible Disk Drive, disable
boot on any drive, disable use of any embedded drive)
• ACPI compliant
• glue logic (such as programmable chip selects)
When the user requests a ShutDown from the operating system, the
environment is first cleared. Any request to turn off the PC Workstation,
from the control panel, or from the operating system, can only be granted if
the PC Workstation is not locked by Little Ben’s lock bit (otherwise the
power remains on, a red light is illuminated, and the buzzer is sounded).
To Next Page
Loading...
Need help?
General
