VGA32_16BPP, VGA32_TFT - External Memory Data Format

Frozen Content

When using the VGA32_16BPP or VGA32_TFT 32-bit VGA Controller variants, the color quality is fixed at 16 bits per pixel. The VGA Controller does not create the output RGB value for a pixel through use of a color look-up table – rather the color information is stored in the external video memory in the correct format and used directly.

Each address in memory contains a 32-bit word. That word contains the RGB color information for two pixels, with each pixel represented by 16 bits (or 2 bytes). For pixels 0-1 for example, the 32-bit word in memory would be stored as follows:

MSB                                                                                                                                                                                                                LSB
31                          27 26                          21 20                          16 15                          11 10                          5 4                          0
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