INT 10 - VIDEO - SET BORDER (OVERSCAN) COLOR (PCjr,EGA,VGA)
        AX = 1001h
        BH = border color (00h-3Fh)
BUG:    the original IBM VGA BIOS incorrectly updates the parameter save area
          and places the border color at offset 11h of the palette table
          rather than offset 10h
Note:   under UltraVision, the palette locking status (see AX=CD01h)
          determines the outcome
SeeAlso: AX=1008h,AX=CD01h