module rom #(
    parameter string           FILE_NAME = "",
    parameter integer unsigned ADDR_W = 8,
    parameter integer unsigned DATA_W = 8
) (
    input  logic              clk_i,
    input  logic              cs_i,
    input  logic [ADDR_W-1:0] address_i,

    output logic [DATA_W-1:0] rdata_o
);

localparam ROM_SIZE = 2**ADDR_W;

logic [DATA_W-1:0] rom [ROM_SIZE-1:0];
logic [DATA_W-1:0] rdata;

always_ff @(posedge clk_i)
    if (cs_i)
        rdata <= rom[address_i];

assign rdata_o = {DATA_W{cs_i}} & rdata;

initial begin
    static integer fd = $fopen(FILE_NAME, "rb");
    static integer rv = $fread(rom, fd);
end

endmodule : rom