"H:\Product\LK\FPGA\LK-Xilinx-TB\VerilogHDL\Thermisotor_DS18B20\top.v" Line 38: Port CLK180 is not connected to this instance Input <reset> 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. HDL ADVISOR - The RAM <Mram__n0613> will be implemented on LUTs either because you have described an asynchronous read or because of currently unsupported block RAM features. If you have described an asynchronous read, making it synchronous would allow you to take advantage of available block RAM resources, for optimized device usage and improved timings. Please refer to your documentation for coding guidelines. FF/Latch <data_tx_7> has a constant value of 0 in block <USB>. This FF/Latch will be trimmed during the optimization process. FF/Latch <Printf/data_buffer_index_7> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <Printf/data_buffer_index_5> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <Printf/data_buffer_index_6> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <Printf/tx_clk_count_12> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <Printf/tx_clk_count_13> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <Printf/tx_clk_count_14> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <Printf/tx_clk_count_15> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/read_cnt_3> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/read_cnt_4> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/read_cnt_5> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/read_cnt_6> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/read_cnt_7> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_19> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_20> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_21> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_22> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_23> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_24> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_25> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_26> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_27> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_28> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_29> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_30> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/reset_cnt_31> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/write_cnt_3> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/write_cnt_4> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/write_cnt_5> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/write_cnt_6> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process. FF/Latch <DS18B20/write_cnt_7> has a constant value of 0 in block <top>. This FF/Latch will be trimmed during the optimization process.