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Some old software which is speed sensitive may not work
properly with the cache enabled. This problem is
uncommon, and this option is provided as a safety net.
External cache
Checking this box disables the external cache, the cache
outside the i486. There should normally be no reason to
disable this cache, it will result in a performance decrease.
Some old software which is speed sensitive may not work
properly with the cache enabled. This problem is
uncommon, and this option is provided as a safety net.
If your XEN-LS II is not equipped with the external cache
this option will be greyed out.
Expansion slots
Checking this box disables all three expansion slots.
This option would not normally be used, however under
certain circumstances it may be useful. For example, if you
install an expansion card and the computer fails to boot
when you power it up. You may be able to use this SETUP
option to disable the expansion slots, and get the computer
to boot.
Motherboard BIOS
The system and VGA BIOS on the motherboard is stored
in ROM which has long access times. Enabling BIOS
shadowing enhances the performance of the system by
copying the contents of the BIOS ROM into RAM.
By copying the BIOS into RAM the system takes
advantage of the shorter access times of RAM. An
additional benefit is that shadowed ROM spaces are
cached gaining a further performance advantage.
Shadow
Checking this box enables BIOS shadowing for the
associated address range.
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