testbench读取文件

integer fid;
initial
begin
    wait(rstn==1);
    fid = $fopen("D:/input.txt","r");
    while (!$feof(fid)) begin
        @(posedge clk) begin
            $fscanf(fid, "%d", rx_sig_I);
        end
    end
    $display("stop @eof");
    $fclose(fid);
    forever @(posedge clk) begin
        rx_sig_I<=0;
    end
    // $finish;
end