implement时出错 implement

klakloklan

ERROR:MapLib:661 - LUT3 symbol "U4/out<0>1" (output signal=sel_over<0>) has
ERROR:MapLib:661 - LUT3 symbol "U4/out<0>1" (output signal=sel_over<0>) has
ERROR:MapLib:661 - LUT3 symbol "U4/out<1>1" (output signal=sel_over<1>) has
ERROR:MapLib:661 - LUT3 symbol "U4/out<1>1" (output signal=sel_over<1>) has
ERROR:MapLib:661 - LUT4 symbol "U5/Mrom__rom00001" (output
ERROR:MapLib:661 - LUT4 symbol "U5/Mrom__rom00001" (output
ERROR:MapLib:661 - LUT4 symbol "U5/Mrom__rom00002" (output
ERROR:MapLib:661 - LUT4 symbol "U5/Mrom__rom00002" (output
ERROR:MapLib:661 - LUT4 symbol "U5/Mrom__rom00003" (output
ERROR:MapLib:661 - LUT4 symbol "U5/Mrom__rom00003" (output
ERROR:MapLib:661 - LUT4 symbol "U5/Mrom__rom00004" (output
ERROR:MapLib:661 - LUT4 symbol "U5/Mrom__rom00004" (output
ERROR:MapLib:661 - LUT3 symbol "U7/Mrom_out1" (output signal=led_11_0_OBUF) has
ERROR:MapLib:661 - LUT3 symbol "U7/Mrom_out1" (output signal=led_11_0_OBUF) has
ERROR:MapLib:661 - LUT4 symbol "U7/Mrom_out2" (output signal=led_11_1_OBUF) has
ERROR:MapLib:661 - LUT4 symbol "U7/Mrom_out2" (output signal=led_11_1_OBUF) has

请问各位大侠,这是什么错误啊?多谢了..

klakloklan

谢谢老大的回答.

但每个单元的连接并没有问题啊,不然的话综合也过不了吧.

在网上查了一下,说是每个单元的输入线最后都要到达输出线,每个单元的输出线都要有输入线对应.

这是说每个单元必须要有输入和输出吗?只有输入没有输出,或只有输出没有输入是不允许的吗?