Software • BIOS options
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Automation PC 810 with GM45 CPU board user's manual V1.28
Chapter 4 • Software
1 BIOS options
Information:
The following diagrams, BIOS menu items and their descriptions refer to BIOS version 1.17. It is there-
fore possible that these diagrams and BIOS descriptions will not correspond with the BIOS version
actually installed.
1.1 General information
BIOS is an acronym for "Basic Input/Output System". It is the most basic standardized interface between the
user and the system (hardware). The BIOS system used in this B&R Industrial PC was developed by American
Megatrends Inc.
The BIOS Setup utility can be used to modify basic system configuration settings. These settings are stored in
CMOS and EEPROM memory (as a backup).
CMOS data is buffered by a battery (if present) and continues to remain stored on the B&R Industrial PC even
when the power is turned off (no 24 VDC supply).
1.2 BIOS setup and boot procedure
BIOS is immediately activated when switching on the power supply or pressing the power button on the B&R
Industrial PC. The system checks if the setup data from EEPROM memory 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 to see whether it is valid. An error
message is output if the CMOS data contains errors, and the boot procedure can be continued by pressing <F1>.
To prevent an error message from appearing at each restart, the BIOS Setup utility can be opened by pressing
<Del>. The settings can then be re-saved.
BIOS reads the system configuration information, checks and configures the system with the Power-On Self-Test
(POST).
When these "preliminaries" are finished, BIOS seeks an operating system on the available data storage devices
(hard drive, floppy drive, etc.). BIOS then launches the operating system and hands over to it the control of system
operations.
To enter BIOS Setup, the <Del> key must be pressed after the USB controller has been initialized as soon as the
following message appears on the screen (during POST): "Press DEL to run SETUP".
