Int 2F Fn D002  C - Mdebug Display Driver - Save Graphic Data              [G]

   AX = D002h

Return: CF set on error
   CF clear if successful
       display memory saved and display switched to one of the text modes
         02h, 03h or 07h.

Note:  MDEBUG calls this function only once every popup session before
     displaying its windows.

See Also: AX=D000h,AX=D003h