Int 21 Fn 3505  P - Flashtek X-32vm - Set Selector LIMit                   [E]

   AX = 3505h
   BX = selector
   ECX = desired limit

Return: CF clear if successful
       ECX = actual limit set
   CF set on error (no more selectors available)

Note:  the limit will be rounded down to nearest 4K boundary if the requested
     limit is greater than 1MB

See Also: AX=3503h,INT 31/AX=0008h