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53 Chapter 5
DVMT dynamically responds to system requirements, and application
demands, by allocating the proper amount of display, texturing and buffer
memory after the operating system has booted. For example, a 3D appli-
cation when launched may require more vertex buffer memory to
enhance the complexity of objects, or more texture memory to enhance
the richness of the 3D environment. The operating system views the inte-
grated graphics driver as an application, which uses Direct AGP to
request allocation of additional memory for 3D applications, and returns
the memory to the operating system (OS) when no longer required.
The Intel Extreme Graphics Driver determines the size of the pre-allo-
cated memory needed and will make additional Non-Local Video Mem-
ory requests to achieve the amount needed for the display and application
requirement. The video memory size in the Intel® 865G chipset varies
and is determined using several factors. The key factors are system
resources and system activity. The maximum video memory is up to
64MB SDRAM
5.3 Windows XP Driver Setup
1. Insert the driver CD into your system's CD-ROM drive. In a few
seconds, the software installation main menu appears, as shown in the
following figure. Under the "VGA DRIVERS" heading, click on one of
the buttons (labeled "W2K XP", "WIN9X ME", and "WIN NT" respec-
tively) according to the operating system you are using. The following
Note: Before installing this driver, make sure the CSI
utility has been installed in your system. See
Chapter 4 for information on installing the CSI
utility