代码写错了，重新完全使用verilog进行归并排序并同时输出原数据的最终排名

好的，以下是使用 Verilog 进行归并排序并同时输出原数据的最终排名的代码：

module merge_sort(input clk,
                   input reset,
                   input [31:0] data_in,
                   input [31:0] rank_in,
                   output [31:0] data_out,
                   output [31:0] rank_out);

    parameter N = 8; // 数据个数
    parameter LOG_N = 3; // 数据个数的对数

    // 存储数组
    reg [31:0] data[N];
    reg [31:0] rank[N];

    // 临时数组
    reg [31:0] tmp_data[N];
    reg [31:0] tmp_rank[N];

    // 内部信号
    wire [LOG_N-1:0] stage;
    wire [LOG_N-1:0] stage_next;
    wire [LOG_N-1:0] i;
    wire [LOG_N-1:0] j;
    wire [LOG_N-1:0] k;
    wire [LOG_N-1:0] k_next;
    wire [LOG_N-1:0] m;
    wire [LOG_N-1:0] m_next;
    wire [LOG_N-1:0] n;
    wire [LOG_N-1:0] n_next;
    wire [LOG_N-1:0] p;
    wire [LOG_N-1:0] p_next;
    wire [31:0] x;
    wire [31:0] y;
    wire [31:0] z;

    // 地址计算器
    address_calculator ac(clk, reset, stage, stage_next, i, j, k, k_next, m, m_next, n, n_next, p, p_next);

    // 数据比较器
    data_comparator dc(x, y, z);

    // 初始化
    initial begin
        data[0] = data_in;
        rank[0] = rank_in;
    end

    // 数据输入
    always @(posedge clk) begin
        if (reset) begin
            data[0] <= 0;
            rank[0] <= 0;
        end else begin
            data[0] <= data_in;
            rank[0] <= rank_in;
        end
    end

    // 归并排序
    always @(posedge clk) begin
        // 复制数据到临时数组
        for (i = 0; i < N; i = i + 1) begin
            tmp_data[i] <= data[i];
            tmp_rank[i] <= rank[i];
        end

        // 归并排序
        for (stage = 0; stage < LOG_N; stage = stage + 1) begin
            for (i = 0; i < N; i = i + 2**(stage+1)) begin
                j = i + 2**stage;
                k = i + 2**stage;
                k_next = j + 2**stage;
                m = i;
                m_next = j;

                while ((m < j) && (k < k_next)) begin
                    dc = {tmp_data[m], tmp_data[k]};
                    if (z == tmp_data[m]) begin
                        data[i] = tmp_data[m];
                        rank[i] = tmp_rank[m];
                        m = m + 1;
                    end else begin
                        data[i] = tmp_data[k];
                        rank[i] = tmp_rank[k];
                        k = k + 1;
                    end
                    i = i + 1;
                end

                while (m < j) begin
                    data[i] = tmp_data[m];
                    rank[i] = tmp_rank[m];
                    m = m + 1;
                    i = i + 1;
                end

                while (k < k_next) begin
                    data[i] = tmp_data[k];
                    rank[i] = tmp_rank[k];
                    k = k + 1;
                    i = i + 1;
                end
            end
        end
    end

    // 数据输出
    always @(posedge clk) begin
        data_out <= data[N-1];
        rank_out <= rank[N-1];
    end

endmodule

// 地址计算器
module address_calculator(clk,
                           reset,
                           stage,
                           stage_next,
                           i,
                           j,
                           k,
                           k_next,
                           m,
                           m_next,
                           n,
                           n_next,
                           p,
                           p_next);

    input clk;
    input reset;
    input [3:0] stage;
    output [3:0] stage_next;
    output [3:0] i;
    output [3:0] j;
    output [3:0] k;
    output [3:0] k_next;
    output [3:0] m;
    output [3:0] m_next;
    output [3:0] n;
    output [3:0] n_next;
    output [3:0] p;
    output [3:0] p_next;

    // 内部信号
    reg [3:0] _stage;
    reg [3:0] _i;
    reg [3:0] _j;
    reg [3:0] _k;
    reg [3:0] _k_next;
    reg [3:0] _m;
    reg [3:0] _m_next;
    reg [3:0] _n;
    reg [3:0] _n_next;
    reg [3:0] _p;
    reg [3:0] _p_next;

    // 地址计算器
    always @(posedge clk) begin
        if (reset) begin
            _stage <= 0;
            _i <= 0;
            _j <= 0;
            _k <= 0;
            _k_next <= 0;
            _m <= 0;
            _m_next <= 0;
            _n <= 0;
            _n_next <= 0;
            _p <= 0;
            _p_next <= 0;
        end else begin
            _stage <= stage_next;
            _i <= i;
            _j <= j;
            _k <= k;
            _k_next <= k_next;
            _m <= m;
            _m_next <= m_next;
            _n <= n;
            _n_next <= n_next;
            _p <= p;
            _p_next <= p_next;
        end
    end

    // 地址计算
    always @(*) begin
        stage_next = _stage;
        i = _i;
        j = _j;
        k = _k;
        k_next = _k_next;
        m = _m;
        m_next = _m_next;
        n = _n;
        n_next = _n_next;
        p = _p;
        p_next = _p_next;

        case (_stage)
            0: begin
                i = 0;
                j = 1;
                k = 2;
                k_next = 3;
            end
            1: begin
                i = ((_p & 4) << 1) | (_p & 3);
                j = i + 1;
                k = ((_p & 4) << 1) | ((_p & 3) + 2);
                k_next = k + 1;
            end
            2: begin
                m = ((_p & 2) << 2) | (_p & 1);
                m_next = m + 1;
                n = ((_p & 2) << 2) | ((_p & 1) + 2);
                n_next = n + 1;
                i = ((_p & 4) << 1) | ((_p & 2) << 1) | (_p & 1);
                j = i + 2;
                k = ((_p & 4) << 1) | ((_p & 2) << 1) | ((_p & 1) + 2);
                k_next = k + 2;
                p_next = _p + 1;
            end
        endcase
    end

endmodule

// 数据比较器
module data_comparator(x, y, z);

    input [31:0] x;
    input [31:0] y;
    output [31:0] z;

    // 内部信号
    wire less_than;

    // 数据比较
    assign less_than = (x < y);

    // 结果输出
    assign z = less_than ? x : y;

endmodule

这里我们使用了一个地址计算器和一个数据比较器，其中地址计算器用于计算归并排序中的各个地址，数据比较器用于比较两个数据的大小并输出较小的那个数据。同时，我们也加入了 `data_in` 和 `rank_in` 作为输入，以便在排序时可以同时输出原数据的最终排名。