咨询高手:<br /> 由于开始 是 手工 编写 约束文件(EDIT CONSTRAINTS) ,,,后来又用ASSIGN PACKAGE PINS 指定了一次,,, 回头打开 UCF文件(TEXT),,发现出现总线 重叠 指定.......不过名字 有 "()" 和 "<>"之分<br /><br /><br />具体信息如下:<br /><br />#Spartan III <br />#Clock and Reset signals:<br />#DRAM ADDRESS BUS:<br />NET "ARM_ADDR(0)" LOC = "P64" ;<br />NET "ARM_ADDR(1)" LOC = "P65" ;<br />NET "ARM_ADDR(2)" LOC = "P67" ;<br />NET "ARM_ADDR(3)" LOC = "P68" ;<br />NET "ARM_ADD(0)" LOC = "P71" ;<br />NET "ARM_ADD(1)" LOC = "P72" ;<br />NET "ARM_ADD(2)" LOC = "P74" ;<br />NET "ARM_ADD(3)" LOC = "P78" ;<br /><br />#DARAM DATA BUS: <br />NET "ARM_DATA(0)" LOC = "P115" ; <br />NET "ARM_DATA(1)" LOC = "P116" ;<br />NET "ARM_DATA(2)" LOC = "P117 " ;<br />NET "ARM_DATA(3)" LOC = "P119" ;<br />NET "ARM_DATA(4)" LOC = "P120" ;<br />NET "ARM_DATA(5)" LOC = "P122" ;<br />NET "ARM_DATA(6)" LOC = "P123" ;<br />NET "ARM_DATA(7)" LOC = "P124" ;<br />NET "ARM_DATA(8)" LOC = "P125" ;<br />NET "ARM_DATA(9)" LOC = "P126" ;<br />NET "ARM_DATA(10)" LOC = "P128" ;<br />NET "ARM_DATA(11)" LOC = "P130" ; <br />NET "ARM_DATA(12)" LOC = "P131" ;<br />NET "ARM_DATA(13)" LOC = "P132" ;<br />NET "ARM_DATA(14)" LOC = "P133" ;<br />NET "ARM_DATA(15)" LOC = "P135" ;<br /><br /> <br />#PACE: Start of Constraints generated by PACE<br /><br />#PACE: Start of PACE I/O Pin Assignments<br />NET "ARM_ADD<0>" LOC = "P71" ;<br />NET "ARM_ADD<1>" LOC = "P72" ;<br />NET "ARM_ADD<2>" LOC = "P74" ;<br />NET "ARM_ADD<3>" LOC = "P78" ;<br />NET "ARM_ADDR<0>" LOC = "P64" ;<br />NET "ARM_ADDR<1>" LOC = "P65" ;<br />NET "ARM_ADDR<2>" LOC = "P67" ;<br />NET "ARM_ADDR<3>" LOC = "P68" ;<br />NET "ARM_CS_N" LOC = "P147" ; <br />NET "ARM_DATA<0>" LOC = "P115" ;<br />NET "ARM_DATA<10>" LOC = "P128" ;<br />NET "ARM_DATA<11>" LOC = "P130" ;<br />NET "ARM_DATA<12>" LOC = "P131" ;<br />NET "ARM_DATA<13>" LOC = "P132" ;<br />NET "ARM_DATA<14>" LOC = "P133" ;<br />NET "ARM_DATA<15>" LOC = "P135" ;<br />NET "ARM_DATA<1>" LOC = "P116" ;<br />NET "ARM_DATA<2>" LOC = "P117" ;<br />NET "ARM_DATA<3>" LOC = "P119" ;<br />NET "ARM_DATA<4>" LOC = "P120" ;<br />NET "ARM_DATA<5>" LOC = "P122" ;<br />NET "ARM_DATA<6>" LOC = "P123" ;<br />NET "ARM_DATA<7>" LOC = "P124" ;<br />NET "ARM_DATA<8>" LOC = "P125" ;<br />NET "ARM_DATA<9>" LOC = "P126" ;<br /><br />#DRAM CONTROL SIGNAL:<br />NET "ARM_OE_N" LOC = "P149" ; <br />NET "ARM_WE_N" LOC = "P148" ; <br />NET "clock" LOC = "P76" ; <br />NET "led" LOC = "P162" ; #p24->p162<br /><br />NET "line_a" LOC = "P137" ; <br />NET "line_b" LOC = "P140" ; <br />NET "reset" LOC = "p46" | PULLDOWN ; <br />NET "ssf" LOC = "P138" ; <br />NET "ttxd" LOC = "P139" ; <br /><br />#PACE: Start of PACE Area Constraints<br /><br />#PACE: Start of PACE Prohibit Constraints<br /><br />#PACE: End of Constraints generated by PACE<br /> |
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