module sysid_rom#(
  parameter ROM_WIDTH = 32,
  parameter ROM_ADDR_BITS = 6,
  parameter PATH_TO_FILE = "path_to_mem_init_file" )(

  input                             clk,
  input        [ROM_ADDR_BITS-1:0]  rom_addr,
  output  reg  [ROM_WIDTH-1:0]      rom_data);

reg [ROM_WIDTH-1:0] lut_rom [(2**ROM_ADDR_BITS)-1:0];

initial begin
  $readmemh(PATH_TO_FILE, lut_rom, 0, (2**ROM_ADDR_BITS)-1);
end

always @(posedge clk) begin
  rom_data = lut_rom[rom_addr];
end

endmodule