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Details Cont.
Feature
Memory Hole at 15M-16M
Delay Prior to Thermal
AGP Aperture Size
Init Display First
On-Chip VGA
Onboard LAN Control
Onboard AC97 Control
D i g i P o S R e t a i l B l a d e
Options
Description
You can reserve this area of system memory for an ISA
adapter ROM. When this area is reserved, it cannot be
Disabled
cached. The user information of peripherals that need to
Enabled
use this area of system memory usually discusses their
memory requirements.
This BIOS feature is only valid for systems that are fitted
with Intel Pentium 4 processors with 512KB L2 cache.
These processors come with a Thermal Monitor which
actually consists of an on-die thermal sensor and a
Thermal Control Circuit (TCC).
When the Thermal Monitor is in automatic mode and the
thermal sensor detects that the processor has reached its
maximum safe operating temperature, it will activate the
TCC. The TCC will then modulate the clock cycles by
inserting null cycles, typically at a rate of 50-70% of the
4 Min
total number of clock cycles. This results in the processor
8 Min
"resting" 50-70% of the time.
16 Min
As the die temperature drops, the TCC will gradually
32 Min
reduce the number of null cycles until no more is required
to keep the die temperature below the safe point. Then
the thermal sensor turns the TCC off. This mechanism
allows the processor to dynamically adjust its duty cycles
to ensure its die temperature remains within safe limits.
You should not select a delay value that is unnecessarily
long. Without the Thermal Monitor, your processor may
heat up to a critical temperature (approximately 135°C),
at which point the thermal sensor shuts down your
processor by removing the core voltage within 0.5
seconds.
128M
The AGP Aperture is a portion of the PCI memory
64M
address range dedicated for graphics memory address
32M
space. Cycles that hit the aperture range are sent to the
16M
AGP without translation.
8M
See
4M
This tells the BIOS where to look first for the display
AGP
adaptor. This should be set by default to AGP unless you
PCI Slot
fit a secondary PCI card or completely disable the
onboard video adapter.
Enabled
Enables or Disables the onboard Graphics
Disabled
Enabled
Enables or Disables the onboard network card
Disabled
Enabled
Enables or Disables the onboard audio
Disabled
P a g e 7 1 o f 1 0 0
C o p y r i g h t © 2 0 0 5 D i g i P o S S y s t e m s G r o u p
™
M a n u a l
http://www.agpforum.org/
for AGP information.
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