Intel 815 manual 12.3.6. BR05-Setup Expansion Background Color

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

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12.3.6.BR05—Setup Expansion Background Color

Memory Offset Address:				40014h
Default:				None
Attributes:				RO; DWord accessible
31		24	23	0
	Reserved. Must be Zero			Setup Expansion Background Color Bits [23:0]
	Bit			Descriptions
31:24		Reserved. Must be Zero.
23:0		Setup Expansion Background Color Bits [23:0]. These bits provide the one, two, or three bytes
		worth of color data that select the background color to be used in the color expansion of monochrome
		pattern or source data for either the SCANLINE_BLT or TEXT_BLT instructions. BR05 is also used as
		the solid pattern for the PIXEL_BLT instruction.

Whether one, two, or three bytes worth of color data is needed depends upon the color depth to which the BLT Engine has been set. For a color depth of 24bpp, 16bpp and 8bpp, bits [23:0], [15:0] and [7:0], respectively, are used.

12.3.7.BR06—Setup Expansion Foreground Color

Memory Offset Address:				40018h
Default:				None
Attributes:				RO; DWord accessible
31		24	23	0
	Reserved. Must be Zero			Setup Expansion Foreground Color Bits [23:0]
	Bit			Descriptions
31:24		Reserved. Must be Zero.
23:0		Setup Expansion Foreground Color Bits [23:0]. These bits provide the one, two, or three bytes
		worth of color data that select the foreground color to be used in the color expansion of monochrome
		pattern or source data for either the SCANLINE_BLT or TEXT_BLT instructions.

Whether one, two, or three bytes worth of color data is needed depends upon the color depth to which the BLT Engine has been set. For a color depth of 24bpp, 16bpp and 8bpp, bits [23:0], [15:0] and [7:0], respectively, are used.

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