set_property PACKAGE_PIN V17 [get_ports i0]
set_property PACKAGE_PIN V16 [get_ports i1]
set_property PACKAGE_PIN U16 [get_ports o]

set_property IOSTANDARD LVCMOS33 [get_ports i0]
set_property IOSTANDARD LVCMOS33 [get_ports i1]
set_property IOSTANDARD LVCMOS33 [get_ports o]