针对错误信息 "[synth 8-4446] all outputs are unconnected for this instance and logic may be optimized away",我们可以从以下几个方面进行详细分析和解答: 1. 确认错误信息的完整性和准确性 错误信息指出在某个实例中,所有的输出都没有被连接,这可能导致该逻辑被优化掉。确保这是从合成工具(如Xilinx Vivado...
I've put together a test case to demonstrate the message: WARNING: [Synth 8-4446] all outputs are unconnected for this instance and logic may be removed [.../top.sv:21] I discovered that this message only occurs if the interface has an input port (...