Kontron COMe-cSP2 - Manual (Page 39)

COMe-cSP2 / COMe-cSP2 Connector
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4.3.6 Graphics Interface
The COMe-cSP2 uses the graphics accelerator GMA500 with 200MHz GPU clock integrated in the Intel® US15W System
Controller Hub, which delivers shader-based technologies and high-performance 2D, 3D and video capabilities. The
GMA500 graphics engine supports a variety of LCD panels with single clock, color depths of 18/24 bit and resolutions
up to WXGA (1366x768). The maximum supported pixelclock of the US15W SCH is 112 MHz.
Hardware video decode acceleration relieves the decode burden from the processor and reduces the power
consumption of the system. Full hardware acceleration of H.264, MPEG2, VC1 and WMV9 eliminates the need of a
software codec and offloads the CPU.
The graphic adapter uses the onboard RAM as graphic memory. The preallocated memory is defined through BIOS
settings.
Possible settings include:
» 1MB
» 4MB
» 8MB
The total amount of graphics memory in the operating system depends on the size of system memory and the used
driver settings. The graphics media accelerator driver GMA uses DVMT to manage allocating of system memory
according to the needs of running applications. The Intel® Embedded Graphics Driver IEGD allocates the maximum of
graphics memory depending on system memory and driver settings.
Physical Memory
of COMe-cSP2 Preallocated Memory
in BIOS Setup Maximum Graphics Memory
with GMA Driver Maximum Graphics Memory
with IEGD
512MB 1MB 127MB 352MB
512MB 4MB 126MB 352MB
512MB 8MB 125MB 352MB
1024MB 1MB 255MB 352MB
1024MB 4MB 254MB 352MB
1024MB 8MB 253MB 352MB
Note : When using 1MB pre-allocated memory, a Operating Systems without active GMA or IEGD may have problems
displaying a screen (e.g. during WinXP installation).
VGA
The COMe-cSP2 graphics subsystem integrated in the Intel® US15W System Controller Hub does not natively support
VGA output.
Note: Systems that require VGA support need to include a component on the carrier board. It is recommended to
implement a SDVO-to-VGA conversion (e.g. from Chrontel)