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  Description:  Set Palette, Background, or Border      [CGA] [PCjr] [EGA]
                                                        [MCGA] [VGA]
 
  Selects a palette, background, or border color.
 
  Input                                                         Output
  ══════════════════════════════════════════════════            ═══════
  To set the background color and border color for              Nothing
   graphics modes or the border color for text modes
  AH=0BH
  BH=00H
  BL=color
  To select the palette (320-by-200 4-color graphics
   modes)
  AH=0BH
  BH=01H
  BL=palette (see Notes)
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