Proface PS4800 - 19 Panel PC" - Manual (Page 108)

Configuration of the BIOS
108
BIOS Options
General Information
BIOS stands for “Basic Input Output System”. It is the most basic communication
between the user and the hardware. The BIOS used in the Industrial Personal
Computer is produced by Pro-face.
The BIOS Setup Utility lets you modify basic system configuration settings. These
settings are stored in CMOS and in an EEPROM (as a backup).
The CMOS data is buffered by a battery (if present), and remains in the Industrial
Personal Computer even when the power is turned off (24 Vdc power supply is
disconnected).
BIOS Setup and Boot Procedure
BIOS is immediately activated when switching on the power supply of the Industrial
Personal Computer or pressing the power button. The system checks if the setup
data from the EEPROM is OK. If the data is OK, then it is transferred to CMOS. If
the data is not OK, then the CMOS data is checked for validity. A message appears
if the CMOS data contains anomalies, but you can continue the boot procedure by
pressing the [F1] key. To prevent the message from appearing at each restart, open
the BIOS setup by pressing the [DEL] key and re-save the settings.
BIOS reads the system configuration information in CMOS RAM, checks the
system, and configures it using the Power On Self Test (POST).
When these preliminaries are complete, the BIOS seeks the operating system from
the data storage devices available (hard drive, floppy drive, and so on). BIOS
launches the operating system and hands over to the operating system control of
system operations.
To enter BIOS Setup, press the [DEL] key after the USB controller has been
initialized, and as soon as the following message appears on the monitor (during
POST): “Press DEL to run Setup”.
BIOS Setup Keys
The following keys are enabled during the POST:
Key Function
DEL Enters the BIOS setup menu
F12 Using the [F12] key, you can boot from the network.