VHDL - PhysDesignRules:367
问题 I am getting a warning when i try synthesize,implement, and generate program file from my VHDL Code. When i try to synthesize i get this error WARNING:Xst:647 - Input <BTN_3> is never used. This port will be preserved and left unconnected if it belongs to a top-level block or it belongs to a sub-block and the hierarchy of this sub-block is preserved. When i Implement it i get this WARNING:PhysDesignRules:367 - The signal <BTN_3_IBUF> is incomplete. The signal does not drive any load pins in