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ASUS PR-DLS533 motherboard user guide
4-17
4.4.1 Chip Configuration
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 set this to UC
(uncacheable) if your display card cannot support this feature; otherwise
your system may not boot. Configuration options: [UC] [USWC]
Enhanced Memory Mapping [Enabled]
This item allows you to enable or disable the enhanced memory mapping
feature. When enabled, this feature permits better memory bus utilization
to increase the memory bus bandwidth and decrease the latencies.
Configuration options: [Disabled] [Enabled]
The enhanced memory mapping feature can only be used under these
conditions:
• DIMM rows 2 and 4 are populated
• All the DIMMs installed are identical (the same type and size)
• DIMM sockets DDRA1 and DDRA2 are populated
Onboard PCI IDE [Both]
You can select to enable the primary IDE channel, both the primary and
secondary channels, or disable both channels. Configuration options:
[Both] [Primary] [Disabled]