Ampro LittleBoard800 Reference Manual page 73

Chapter 4
♦
Watchdog Timeout (sec) – [select whole number between 1 and 255 seconds,
in 1-second increments] or [Disabled]
If this field is enabled by selecting a time interval (1 to 255 seconds), will direct the watchdog
timer to reset the system if it fails to boot the OS properly. Refer to the watchdog timer
section in Chapter 3 for more information.
♦
Serial Console – [Hot Cable] or [Enabled]
∗ The Hot Cable option only allows console redirection when a Hot Cable is actually
connected to COM 1 or 2. Use the modified serial cable described in Chapter 3,
under Hot (Serial) Cable.
∗ The [Enabled] option instructs the BIOS to operate in the console redirection mode at
all times with the serial port selected in the Serial Console > Port field listed below.
Use a standard null-modem serial cable.
∗ However, connecting a Hot Cable to the other port (port not selected) overrides the
setting of this field [Enabled] and the Serial Console > Port field.
•
Port – [3F8h], [2F8h], [3E8h], or [2E8h]
This field selects the COM (Serial) port address used for console redirection when
[Enabled] has been selected in Serial Console. Use a standard null-modem serial cable.
However, connecting a Hot Cable to the other port (port not selected) overrides this field
setting and activates the connected port. Connecting a Hot Cable to one of the serial ports
only allows console redirection when a Hot Cable is actually connected to Serial 1 or 2.
Use the modified serial cable described in Chapter 3, under Hot (Serial) Cable.
♦
SMM Support – [Disabled] or [Enabled]
This field was created to disable all SMI (System Management Interrupt) activity. This
feature should only be used in special cases and then only when SMI activity would degrade
realtime response.
∗ If this field is set to [Enabled], the default setting, all SMI functions are enabled allowing
the Watchdog Timer, ACPI functions and the USB boot features to operate normally.
∗ If this field is set to [Disabled], all SMI activity is halted and the Watchdog Timer, ACPI
functions, and USB boot features will not operate.
CAUTION
Do not Disable the SMM Support feature, unless you are thoroughly
convinced you need it. This feature is only used for special cases when
all SMI activity needs to be halted, which will disable many features of
your system, including the Watchdog Timer, ACPI functions, and USB
boot features.
♦
USB Boot Support – [Disabled] or [Enabled]
This field allows you to select any USB device as a boot device. Refer also to Drive
Assignment settings, Boot Order settings, and USB (device enable) under On-Board
Controllers for the USB Drive settings and the number of USB ports enabled, respectively.
∗ If this field is set to [Disabled], none of the USB devices connected to the LittleBoard 800
can be used as a boot device.
∗ If this field is set to [Enabled], any of the bootable USB devices connected to the
LittleBoard 800 can be used as a boot device.
NOTE
Ampro does not recommend connecting a USB boot device to the
LittleBoard 800 through an external hub. Instead, connect the USB
boot device directly to the LittleBoard 800.
LittleBoard 800 Reference Manual
BIOS Setup
67