为了方便仿真这样写个ROM

module single_port_rom(/*autoarg*/
   // Outputs
   q,
   // Inputs
   addr, clk
   );


parameter DATA_WIDTH = 8;
parameter ADDR_WIDTH = 8;


input   [ADDR_WIDTH-1:0] addr;
input   clk;
output reg [DATA_WIDTH-1:0] q;


reg [DATA_WIDTH-1:0] rom[2**ADDR_WIDTH-1:0];


initial begins
    $readmemh("/home/IC/Digital_Front_End_Verilog/ip_lib/rtl/DDS/triangular.txt", rom);
  //$readmemb("sin.txt", rom);
end


always @ (posedge clk)begin
   q <= rom[addr];
end


endmodule

single_port_rom 
#(
        .DATA_WIDTH(DATA_WIDTH),
        .ADDR_WIDTH(ADDR_WIDTH)
)
u_sin(/*autoinst*/
      // Outputs
      .q                                (dout[DATA_WIDTH-1:0]),
      // Inputs
      .addr                             (addra[ADDR_WIDTH-1:0]),
      .clk                              (clk));