程序仿真时没有问题,但综合时却出现如下错误,哪位高手指点一下,thanks
WARNING:Xst:528 - Multi-source in Unit <fifo> on signal <read_ptr1<2>1> not replaced by logic
Signal is stuck at GND
WARNING:Xst:528 - Multi-source in Unit <fifo> on signal <read_ptr1<1>1> not replaced by logic
Signal is stuck at VCC
WARNING:Xst:528 - Multi-source in Unit <fifo> on signal <read_ptr1<0>1> not replaced by logic
Signal is stuck at GND | 
