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`timescale 1 ps / 1 ps

module tb_rtc();

reg clk;

reg rst_n;

wire interrupt;

reg         io_address      = 1'b0;

reg         io_read         = 1'b0;

wire [7:0]  io_readdata;

reg         io_write        = 1'b0;

reg  [7:0]  io_writedata    = 8'd0;

reg  [7:0]  mgmt_address    = 8'd0;

reg         mgmt_write      = 1'b0;

reg  [31:0] mgmt_writedata  = 32'd0;

rtc rtc_inst(

    .clk                (clk),

    .rst_n              (rst_n),

    .interrupt          (interrupt),      //output

    //io slave

    .io_address         (io_address),     //input

    .io_read            (io_read),        //input

    .io_readdata        (io_readdata),    //output [7:0]

    .io_write           (io_write),       //input

    .io_writedata       (io_writedata),   //input [7:0]

    //mgmt slave

    /*

    128.[26:0]: cycles in second

    129.[12:0]: cycles in 122.07031 us

    */

    .mgmt_address       (mgmt_address),       //input [7:0]

    .mgmt_write         (mgmt_write),         //input

    .mgmt_writedata     (mgmt_writedata)      //input [31:0]

);

//------------------------------------------------------------------------------

initial begin

    clk = 1'b0;

    forever #5 clk = ~clk;

end

//------------------------------------------------------------------------------

//------------------------------------------------------------------------------

//------------------------------------------------------------------------------

//------------------------------------------------------------------------------

//------------------------------------------------------------------------------

integer finished = 0;

reg [255:0] dumpfile_name;

initial begin

    if( $value$plusargs("dumpfile=%s", dumpfile_name) == 0 ) begin

        dumpfile_name = "default.vcd";

    end

    $dumpfile(dumpfile_name);

    $dumpvars(0);

    $dumpon();

    $display("START");

    rst_n = 1'b0;

    #10 rst_n = 1'b1;

    while(finished == 0) begin

        if($time > 200000) $finish_and_return(-1);

        #10;

        //$dumpflush();

    end

    #60;

    $dumpoff();

    $finish_and_return(0);

end

//------------------------------------------------------------------------------

endmodule