sample.ucf
NET "sysclk_pin" TNM_NET="sysclk_pin";
TIMESPEC TS_clk0=PERIOD:"sysclk_pin":40;
NET "mclk_pin<8>" LOC = "P125";
NET "mclk_pin<9>" LOC = "P186";
NET "probe_pin<0>" LOC = "P218";
NET "probe_pin<1>" LOC = "P187";
NET "reset_pin" LOC = "P124";
NET "sysclk_pin" LOC = "P184";