Int 62 Fn 006F  u - Fgdriver V4.02 - "fg_maprgb" - Map Color Components I  [V]

   AX = 006Fh
   BX = red component
   CX = green component
   DX = blue component

Return: AX = mode-specific palette value corresponding to specified components

Notes: the FGDRIVER functions are rearranged with each major release, but
     their parameters do not change (see #3145 at AX=0000h)
   This function is only meaningful in 16-color graphics modes

See Also: AX=004Eh,AX=00B3h