| Mobile PC Note: Requirements are defined in A3.4.4.7
Display adapters often implement more than one display interface (for example, VGA and DVI, VGA and National Television System Committee (NTSC), Dual VGA, DVI and NTSC, and so on). Each interface that is implemented must comply with the appropriate industry specifications for that interface.
B4.1.2.5.1 Analog VGA.
Among other resolutions and refresh rates, the graphics adapter must support the 85 hertz (Hz) ergonomic timings for all required resolutions supported by the monitor up to 1024 × 768. These timings must conform to the Computer Display Monitor Timing Specifications, Version 1, Rev. 0.8, or the VESA Generalized Timing Formula (GTF), Version 1.1. Any higher timings and resolutions must conform to established industry standards. Additionally, in order to provide optimal support for video playback of NTSC broadcasts, the display adapter must support the NTSC (59.94 Hz) refresh rate to assure smooth frame delivery in TV-based video content applications. Phase Alternation Line (PAL) is important in many regions, but there are no specific requirements.
B4.1.2.5.2 DELETED B4.1.2.5.3 DELETED B4.1.4.5.1 Enumeration of supported color depths.
The driver must comply with the following guidelines for enumeration:
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For 16 bpp, the 5:5:5 mode, the 5:6:5 mode, or both must be supported.
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If only the 5:5:5 mode is supported, the driver must also enumerate this as 16-bpp mode. This is required because some applications only look for 16-bpp support and will run in 8-bit mode if they fail to find a 16-bit mode.
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If both 5:5:5 and 5:6:5 modes are supported, both modes must be enumerated.
For each color depth supported, color ordering must be implemented as shown in the following list. Color ordering is shown in the following list from the most significant bit (MSB) to the least significant bit (LSB).
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