咨询高手:
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
具体信息如下:
#Spartan III
#Clock and Reset signals:
#DRAM ADDRESS BUS:
NET "ARM_ADDR(0)" LOC = "P64" ;
NET "ARM_ADDR(1)" LOC = "P65" ;
NET "ARM_ADDR(2)" LOC = "P67" ;
NET "ARM_ADDR(3)" LOC = "P68" ;
NET "ARM_ADD(0)" LOC = "P71" ;
NET "ARM_ADD(1)" LOC = "P72" ;
NET "ARM_ADD(2)" LOC = "P74" ;
NET "ARM_ADD(3)" LOC = "P78" ;
#DARAM DATA BUS:
NET "ARM_DATA(0)" LOC = "P115" ;
NET "ARM_DATA(1)" LOC = "P116" ;
NET "ARM_DATA(2)" LOC = "P117 " ;
NET "ARM_DATA(3)" LOC = "P119" ;
NET "ARM_DATA(4)" LOC = "P120" ;
NET "ARM_DATA(5)" LOC = "P122" ;
NET "ARM_DATA(6)" LOC = "P123" ;
NET "ARM_DATA(7)" LOC = "P124" ;
NET "ARM_DATA(8)" LOC = "P125" ;
NET "ARM_DATA(9)" LOC = "P126" ;
NET "ARM_DATA(10)" LOC = "P128" ;
NET "ARM_DATA(11)" LOC = "P130" ;
NET "ARM_DATA(12)" LOC = "P131" ;
NET "ARM_DATA(13)" LOC = "P132" ;
NET "ARM_DATA(14)" LOC = "P133" ;
NET "ARM_DATA(15)" LOC = "P135" ;
#PACE: Start of Constraints generated by PACE
#PACE: Start of PACE I/O Pin Assignments
NET "ARM_ADD<0>" LOC = "P71" ;
NET "ARM_ADD<1>" LOC = "P72" ;
NET "ARM_ADD<2>" LOC = "P74" ;
NET "ARM_ADD<3>" LOC = "P78" ;
NET "ARM_ADDR<0>" LOC = "P64" ;
NET "ARM_ADDR<1>" LOC = "P65" ;
NET "ARM_ADDR<2>" LOC = "P67" ;
NET "ARM_ADDR<3>" LOC = "P68" ;
NET "ARM_CS_N" LOC = "P147" ;
NET "ARM_DATA<0>" LOC = "P115" ;
NET "ARM_DATA<10>" LOC = "P128" ;
NET "ARM_DATA<11>" LOC = "P130" ;
NET "ARM_DATA<12>" LOC = "P131" ;
NET "ARM_DATA<13>" LOC = "P132" ;
NET "ARM_DATA<14>" LOC = "P133" ;
NET "ARM_DATA<15>" LOC = "P135" ;
NET "ARM_DATA<1>" LOC = "P116" ;
NET "ARM_DATA<2>" LOC = "P117" ;
NET "ARM_DATA<3>" LOC = "P119" ;
NET "ARM_DATA<4>" LOC = "P120" ;
NET "ARM_DATA<5>" LOC = "P122" ;
NET "ARM_DATA<6>" LOC = "P123" ;
NET "ARM_DATA<7>" LOC = "P124" ;
NET "ARM_DATA<8>" LOC = "P125" ;
NET "ARM_DATA<9>" LOC = "P126" ;
#DRAM CONTROL SIGNAL:
NET "ARM_OE_N" LOC = "P149" ;
NET "ARM_WE_N" LOC = "P148" ;
NET "clock" LOC = "P76" ;
NET "led" LOC = "P162" ; #p24->p162
NET "line_a" LOC = "P137" ;
NET "line_b" LOC = "P140" ;
NET "reset" LOC = "p46" | PULLDOWN ;
NET "ssf" LOC = "P138" ;
NET "ttxd" LOC = "P139" ;
#PACE: Start of PACE Area Constraints
#PACE: Start of PACE Prohibit Constraints
#PACE: End of Constraints generated by PACE
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