Asus Motherboard PR-DLSR533 - Manual (Page 71)

ASUS PR-DLSR533 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. Configuration options: [Disabled] [Enabled]
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]