Tseng Qtec VGA 1024, Руководство по установке

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BL=color value to be used:
* When setting the background color, BL selects any of the
16 colors with a value of 0-15 with bits 0-3.
* When selecting the palette, BL operates as follows:
bit 0=0 selects palette 0 (green/red/brown).
bit 0=1 selects palette 1 (cyan/magenta/white).
Output:
N o n e .
Note: In text modes, the set background function sets the
border color only. In graphics modes, the set
background function sets both the border and background
colors.
Note: This function is implemented via emulation, since the
EGA does not have the same color registers as the
color/graphics adapter.
Note: Actual operation is to set palette register 0 for
background, palette register llh for overscan, and
palette registers 1-3 for palette colors 1-3. Palette
registers are set in any graphics mode, although this
was valid only in 320x200 graphics mode on the color/
graphics adapter.
AH=0C Draw graphics pixel.
Input:
AL=color (actually attribute that goes to the palette RAM
to draw pixel in.
BH=page to draw pixel in.
CX=screen column to write pixel at.
DX=screen row to write pixel at.
Output:
N o n e .
Note: If bit 7 of AL is 1, then the pixel is XOR'd with the
contents of video memory (except in 256 color modes).
AH=0D Read graphics pixel color (actually attribute that goes to
the palette RAM).
Input:
BH=page to read pixel from.
CX=screen column to read pixel from.
DX=screen row to read pixel from.
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