User`s manual

50 CMX34GS cpuModule BDM-610000082 Rev A
The RTD Enhanced BIOS
The RTD Enhanced BIOS is software that interfaces hardware-specific features of the cpuModule to an operating
system (OS). Physically, the BIOS software is stored in a Flash EPROM on the cpuModule. Functions of the BIOS
are divided into two parts.
The first part of the BIOS is known as POST (power-on self-test) software, and it is active from the time power is
applied until an OS boots (begins execution). POST software performs a series of hardware tests, sets up the
machine as defined in Setup, and begins the boot of the OS.
The second part of the BIOS is known as the CORE BIOS. It is the normal interface between cpuModule hardware
and the OS which is in control. It is active from the time the OS boots until the cpuModule is turned off. The
CORE BIOS provides the system with a series of software interrupts to control various hardware devices.
Configuring the RTD Enhanced BIOS
The cpuModule Setup program allows you to customize the cpuModule's configuration. Selections made in
Setup are stored on the board and are read by the BIOS at power-on.
Entering the BIOS Setup
You can run Setup by rebooting the cpuModule and repeatedly pressing the Delete key. When you are finished
with Setup, save your changes and exit. The system will automatically reboot
Field Selection
To move between fields in Setup, use the keys listed below.
Table 29 Setup Keys
Key Function

,

,

,
 Move between fields
+, –, PgUp, PgDn
Selects next/previous values in fields
Enter Go to the submenu for the field
Esc To previous menu then to exit menu