|  | create_clock -period 10.000 -name clk [get_ports clk] | 
|  |  | 
|  | set_property PACKAGE_PIN W5  [get_ports clk] | 
|  |  | 
|  | set_property PACKAGE_PIN B18 [get_ports rx] | 
|  | set_property PACKAGE_PIN A18 [get_ports tx] | 
|  |  | 
|  | set_property PACKAGE_PIN V17 [get_ports sw[ 0]] | 
|  | set_property PACKAGE_PIN V16 [get_ports sw[ 1]] | 
|  | set_property PACKAGE_PIN W16 [get_ports sw[ 2]] | 
|  | set_property PACKAGE_PIN W17 [get_ports sw[ 3]] | 
|  | set_property PACKAGE_PIN W15 [get_ports sw[ 4]] | 
|  | set_property PACKAGE_PIN V15 [get_ports sw[ 5]] | 
|  | set_property PACKAGE_PIN W14 [get_ports sw[ 6]] | 
|  | set_property PACKAGE_PIN W13 [get_ports sw[ 7]] | 
|  | set_property PACKAGE_PIN V2  [get_ports sw[ 8]] | 
|  | set_property PACKAGE_PIN T3  [get_ports sw[ 9]] | 
|  | set_property PACKAGE_PIN T2  [get_ports sw[10]] | 
|  | set_property PACKAGE_PIN R3  [get_ports sw[11]] | 
|  | set_property PACKAGE_PIN W2  [get_ports sw[12]] | 
|  | set_property PACKAGE_PIN U1  [get_ports sw[13]] | 
|  | set_property PACKAGE_PIN T1  [get_ports sw[14]] | 
|  | set_property PACKAGE_PIN R2  [get_ports sw[15]] | 
|  |  | 
|  | set_property PACKAGE_PIN U16 [get_ports led[ 0]] | 
|  | set_property PACKAGE_PIN E19 [get_ports led[ 1]] | 
|  | set_property PACKAGE_PIN U19 [get_ports led[ 2]] | 
|  | set_property PACKAGE_PIN V19 [get_ports led[ 3]] | 
|  | set_property PACKAGE_PIN W18 [get_ports led[ 4]] | 
|  | set_property PACKAGE_PIN U15 [get_ports led[ 5]] | 
|  | set_property PACKAGE_PIN U14 [get_ports led[ 6]] | 
|  | set_property PACKAGE_PIN V14 [get_ports led[ 7]] | 
|  | set_property PACKAGE_PIN V13 [get_ports led[ 8]] | 
|  | set_property PACKAGE_PIN V3  [get_ports led[ 9]] | 
|  | set_property PACKAGE_PIN W3  [get_ports led[10]] | 
|  | set_property PACKAGE_PIN U3  [get_ports led[11]] | 
|  | set_property PACKAGE_PIN P3  [get_ports led[12]] | 
|  | set_property PACKAGE_PIN N3  [get_ports led[13]] | 
|  | set_property PACKAGE_PIN P1  [get_ports led[14]] | 
|  | set_property PACKAGE_PIN L1  [get_ports led[15]] | 
|  |  | 
|  | # JA (X1Y1) | 
|  | set_property PACKAGE_PIN J1  [get_ports io[0]] | 
|  | set_property PACKAGE_PIN L2  [get_ports io[1]] | 
|  | set_property PACKAGE_PIN J2  [get_ports io[2]] | 
|  | set_property PACKAGE_PIN G2  [get_ports io[3]] | 
|  |  | 
|  | # JB (X0Y2) | 
|  | set_property PACKAGE_PIN A14 [get_ports io[4]] | 
|  | set_property PACKAGE_PIN A16 [get_ports io[5]] | 
|  | set_property PACKAGE_PIN B15 [get_ports io[6]] | 
|  |  | 
|  | # JC (X0Y0) | 
|  | set_property PACKAGE_PIN K17 [get_ports io[7]] | 
|  | set_property PACKAGE_PIN M18 [get_ports io[8]] | 
|  | set_property PACKAGE_PIN N17 [get_ports io[9]] | 
|  |  | 
|  | foreach port [get_ports] { | 
|  | set_property IOSTANDARD LVCMOS33 $port | 
|  | set_property SLEW FAST $port | 
|  | } |