set_property LOC E3 [get_ports clk]
set_property IOSTANDARD LVCMOS33 [get_ports clk]

set_property LOC J13 [get_ports {in[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {in[0]}]

set_property LOC J14 [get_ports {in[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {in[1]}]

set_property LOC K15 [get_ports {out[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {out[0]}]

set_property LOC K16 [get_ports {out[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {out[1]}]