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2.3.1
Shadow RAM
The system reserves 384 KB of random access memory (RAM) for
the shadow RAM function.
addresses. When you set these addresses to
BIOS, video BIOS, and I/O ROM functions run directly from the
shadow RAM for faster operation. When you set them to
the functions run normally from ROM.
The address range E0000h - FFFFFh is for shadowing the system
BIOS.
This item is always set to
configurable. The address range C0000h - C7FFFh is for shadowing
the video BIOS.
This item is fixed to
configurable if the Auto Configuration Mode and the Fast Boot Mode
parameters on page 2 of the Basic System Configuration menu are
enabled. Otherwise, you can disable this item.
The remaining address ranges are for I/O ROM functions.
2.3.2
L1 & L2 Cache (CPU Cache)
This parameter enables or disables the first- and second-level cache
memory integrated in the Pentium Pro CPU. This item is fixed to
Enabled
and is non-configurable if you enabled the Auto
configuration Mode and Fast Boot Mode parameters on page 2 of the
Basic System Configuration menu. Otherwise, you can disable this
item.
2.3.3
Cache Scheme
This parameter allows you to select
for the cache mode.
Write back
memory when there is a write instruction. It updates the memory only
when there is an inconsistency between the cache and the memory.
Write through
updates both the cache and the memory whenever
there is a write instruction.
2-14
This parameter has eight range
Enabled
, the system
and is not user-
Enabled
and is not user-
Enabled
or
Write back
Write through
updates the cache but not the
User's Guide
Disabled
,
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