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ECM-945GSE
3.5.3.6 System Memory Frequency
It allows controlling the system memory frequency. The memory frequency will either be
equal to or less than the processor system bus frequency.
The choices: Auto, 400MHz, 533MHz.
3.5.3.7 System BIOS Cacheable
This feature is only valid when the system BIOS is shadowed. It enables or disables the
caching of the system BIOS ROM at F0000h-FFFFFh via the L2 cache. This greatly
speeds up accesses to the system BIOS. However, this does not translate into better
system performance because the OS does not need to access the system BIOS much.
The choices: Disabled, Enabled.
3.5.3.8 Video BIOS Cacheable
This feature is only valid when the video BIOS is shadowed. It enables or disables the
caching of the video BIOS ROM at C0000h-C7FFFh via the L2 cache. This greatly speeds
up accesses to the video BIOS. However, this does not translate into better system
performance because the OS bypasses the BIOS using the graphics driver to access the
video card's hardware directly.
The Choice: Enabled, Disabled.
3.5.3.9 Memory Hole At 15M-16M
Enabling this feature reserves 15MB to 16MB memory address space to ISA expansion
cards that specifically require this setting. This makes the memory from 15MB and up
unavailable to the system. Expansion cards can only access memory up to 16MB.
The choice: Enable, Disable.
3.5.3.10 PCI Express Root
For the PCI Express root ports, the assignment of a function number to a root port is not
fixed. This item allows you to re-assign the function numbers on a port by port basis. You
can disable/hide any root port and have still have functions 0 thru N-1 where N is the total
number of enabled root ports.
60 ECM-945GSE User's Manual
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