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PCA-6189 User’s Manual 58
Chapter 5 VGA Setup
5.1 Introduction
The PCA-6189 has VGA onboard, you need to install the VGA driver to
enable the function.
The Intel 855GME Chipset provides a highly integrated graphics acceler-
ator delivering high performance 2D, 3D, and video capabilities. With its
interfaces to UMA using a DVMT configuration, an analog display, a
LVDS port, and two digital display ports (e.g. flat panel), the GMCH can
provide a complete graphics
solution.
The Intel 855GME also provides 2D hardware acceleration for block
transfers of data (BLTs). The BLT engine provides the ability to copy a
source block of data to a destination and perform raster operations
(e.g.,ROP1, ROP2, and ROP3) on the data using a pattern, and/or another
destination. Performing these
common tasks in hardware reduces CPU load, and thus improves perfor-
mance.
High bandwidth access to data is provided through the system memory
interface. The GMCH uses
Tiling architecture to increase system memory efficiency and thus maxi-
mize effective rendering bandwidth. The Intel 855GME Chipset
improves 3D performance and quality with 3D Zone rendering technol-
ogy. The Intel 855GME GMCH also supports Video Mixer rendering,
and Bi-Cubic filtering.
5.2 Dynamic Video Memory Technology (DVMT)
The Intel 855GME supports DVMT in a non-graphics system memory
configuration. DVMT is a mechanism that manages system memory and
the internal graphics device for optimal graphics performance. DVMT
enabled software drivers, working with the memory arbiter and the oper-
ating system, utilize the system memory to support 2D graphics and 3D
applications. DVMT dynamically responds to application requirements
by allocating the proper amount of display and texturing memory.