Int 10 Fn 47  - Video - Hercules Grafix - "getpt" - Find Pixel Value       [V]

   AH = 47h
   DI = x (0-719)
   BP = y (0-347)

Return: AL = 00h pixel clear
   AL = 01h pixel set

Note:  function 43h specifies which page is used

See Also: AH=0Dh,AH=46h