Why are the Frame Buffer II IP core dout_data, master_wr_writedata and master_rd_readata signals shown as unknown during simulation? - Why are the Frame Buffer II IP core dout_data, master_wr_writedata and master_rd_readata signals shown as unknown during simulation? Description Due to a problem in the Quartus® Prime software version 15.1, you may observe the Frame Buffer II IP core dout_data , master_wr_writedata and master_rd_readata signals showing as unknown during simulation. Hardware operation is not affected. Resolution This problem is fixed beginning with the Quartus Prime software version 16.0. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 16.0 15.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue'] - 2021-08-25

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