Asus P2L97-DS - Manual (Page 49)

ASUS P2L97-DS User’s Manual 49
IV. BIOS SOFTWARE
Video Memory Cache Mode (UC)
USWC (uncacheable, speculative write combining) is a new cache technology for the
video memory of the processor. It can greatly improve the display speed by caching the
display data. You must leave this on the default setting of UC (uncacheable) if your
display card cannot support this feature, otherwise your display may not show properly.
PCI 2.1 Support (Enabled)
This function allows you to enable or disable PCI 2.1 features. Leave on the default
Enabled setting for PCI 2.1 compliancy.
Memory Hole At 15M–16M (Disabled)
Enabling this feature reserves 15MB to 16MB memory address space to ISA expan-
sion 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 default is Disabled.
DRAM are xx bits wide
If all your memory modules have ECC chips (e.g., 8 chips + 4 ECC chips), they are
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32bits and the following will be displayed instead:
Data Integrity Mode (Non-ECC)
Non-ECC has byte-wise write capability but no provision for protecting data integ-
rity in the DRAM array. EC-Only data errors are de
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