Ampro Little Board 700, Reference Manual

Page: 72 / 90

Chapter 4 BIOS Setup
66 Reference Manual LittleBoard 700
•
DRAM
♦
DRAM Clock Frequency – [
SPD
] or [PC100]
This field specifies the DRAM clock frequency.
•
If this field is set to SPD (Serial Presence Detect), then the DRAM clock is set using the
information read from the SPD(s) on the DRAM module(s).
•
If this field is set to PC100, the clock will override the DRAM SPD information and force
the DRAM clock to 100MHz.
NOTE The DRAM clock frequency can never be set higher than
the CPU’s Front Side Bus (FSB) clock frequency,
regardless of the SPD or PC100 setting.
♦
DRAM CAS Latency – [
SPD
], [CAS 3], or [CAS 2]
This field specifies the DRAM CAS (Column Address Strobe) Latency
•
If this field is set to SPD, then the DRAM CAS latency is set using the information read
from the SPD(s) on the DRAM module(s).
•
If this field is set to CAS 2 or CAS 3, the setting will override the DRAM SPD
information and force the DRAM CAS latency to the specified value.
•
Power Management
♦
ACPI – [Disabled] or [
Enabled
]
If this field is set to [Enabled], the Advanced Configuration and Power Interface API is turned on.
♦ APM – [
Disabled
] or [Enabled]
If this field is set to [Enabled], the Advanced Power Management API is turned on.
•
Advanced features
♦ Post Memory Manager – [
Disabled
] or [Enabled]
If this field is set to [Enabled], the Post Memory Manger API is turned on. The Post Memory
Manger can be used by BIOS option ROMs to allocate memory in a well defined way.
♦
CPU Serial Number – [Disabled] or [
Enabled
]
If this field is set to [Enabled], the internal serial number in the Intel CPU is accessible by the
Operating System and/or Applications that can make use of this information.
♦
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.