EPM-19 Hardware Reference Manual
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Video Interfaces
An on-board video controller integrated into the Vortex86DX2 SoC provides high performance
video output for the EPM-19.
C
ONFIGURATION
The EPM-19 uses shared memory architecture. This allows the video controller to use variable
amounts of system DRAM — 8 MB, 16 MB (default), 32 MB, or 64 MB — for video RAM.
The amount of RAM used for video is set with a BIOS Setup utility option.
The EPM-19 supports two types of video output: VGA and LVDS flat panel display. A BIOS
Setup utility sub-menu (Boot Display Device) selects which output is enabled through POST.
The operating system will then take over based on the Graphic Utility CRT or LCD selection. If
the Boot Display Device selected provides incorrect timing information for an attached LCD
panel and the Graphics Utility is set to LCD, you may not see video on the output.
Refer to Table 19 on page 40 for a list of BIOS settings for boot display devices and their
corresponding resolutions.
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