loopback.ucf

Xilinx的培训教程的源码 virtex

NET "clk" TNM_NET = "clk";
TIMESPEC "TS_clk" = PERIOD "clk" 10 ns HIGH 50 %;
OFFSET = IN 6 ns BEFORE "clk"  ;
OFFSET = OUT 7.5 ns AFTER "clk"  ;
NET clk LOC=AJ15;
Net rst LOC=AG5;

net switches<0> LOC = AC11;
net switches<1> LOC = AD11;
net switches<2> LOC = AF8;
net switches<3> LOC = AF9;

Net leds<0> LOC=AC4;
Net leds<1> LOC=AC3;
Net leds<2> LOC=AA6;
Net leds<3> LOC=AA5;

Net rs232_rx LOC=AJ8;
Net rs232_tx LOC=AE7;