clock.ucf

是一些很好的FPGA设计实例

NET "clk" LOC = "p80";
NET "cs<0>" LOC = "p176";
NET "cs<1>" LOC = "p175";
NET "data_led<0>" LOC = "p191";
NET "data_led<1>" LOC = "p189";
NET "data_led<2>" LOC = "p188";
NET "data_led<3>" LOC = "p187";
NET "data_led<4>" LOC = "p181";
NET "data_led<5>" LOC = "p180";
NET "data_led<6>" LOC = "p179";
NET "data_led<7>" LOC = "p178";
NET "hourh" LOC = "p146";
NET "hourl" LOC = "p147";
NET "minh" LOC = "p141";
NET "minl" LOC = "p145";
NET "reset" LOC = "p110";
NET "secondh" LOC = "p139";
NET "secondl" LOC = "p140";
NET "select_dis" LOC = "p111";
NET "shift<0>" LOC = "p202";
NET "shift<1>" LOC = "p201";
NET "shift<2>" LOC = "p199";
NET "shift<3>" LOC = "p200";
NET "preset" LOC = "p112";