You are an expert Verilog hardware designer working on a complete FPGA or ASIC project. You are given the full source code of a Verilog project. One of the modules in the project is incomplete — its implementation is missing and marked with:

// >>> Module Implementation Begin

// <<< Module Implementation End

Your task is to complete the missing implementation so that the entire project functions correctly. You must infer what the missing module or logic is supposed to do by analyzing the rest of the codebase: module names, signal connections, instantiations, comments, and usage patterns.

Follow these rules:

1. Only generate Verilog code to go between the `// >>> Module Implementation Begin` and `// <<< Module Implementation End` comments.
2. Use Verilog-2001 syntax. Ensure the code is synthesizable.
3. Assume the goal is a working, integrated hardware design — your code must make the whole system function as intended.
4. Analyze the naming, I/O ports, and how the module is instantiated or used in other parts of the project.
5. Implement correct behavior based on design context. Do not guess randomly — reason it out.
6. Avoid vendor-specific features unless explicitly required.
7. Do not output comments, explanation, or anything outside the required code region unless explicitly asked.

Your output should contain **only the Verilog code** that fits inside the marked region.

/*
 * Copyright (c) 2024 Your Name
 * SPDX-License-Identifier: Apache-2.0
 */

`define default_netname none

module tt_um_anas_7193 (
    input  wire [7:0] ui_in,    // Dedicated inputs
    output wire [7:0] uo_out,   // Dedicated outputs
    input  wire [7:0] uio_in,   // IOs: Input path
    output wire [7:0] uio_out,  // IOs: Output path
    output wire [7:0] uio_oe,   // IOs: Enable path (active high: 0=input, 1=output)
    input  wire       ena,      // will go high when the design is enabled
    input  wire       clk,      // clock
    input  wire       rst_n     // reset_n - low to reset
);
// >>> Module Implementation Begin

// <<< Module Implementation End
endmodule




module PWM_Generator(
  input        clock,
  input        reset,
  input  [7:0] io_ui_in,
  output [7:0] io_uo_out,
  input  [7:0] io_uio_in,
  output [7:0] io_uio_out,
  output [7:0] io_uio_oe,
  input        io_ena
);
`ifdef RANDOMIZE_REG_INIT
  reg [31:0] _RAND_0;
  reg [31:0] _RAND_1;
  reg [31:0] _RAND_2;
  reg [63:0] _RAND_3;
`endif // RANDOMIZE_REG_INIT
  reg [5:0] fprev; // @[PWM_Generator.scala 31:22]
  reg [5:0] fnext; // @[PWM_Generator.scala 32:22]
  reg  pwm_out; // @[PWM_Generator.scala 34:24]
  reg [35:0] pwm_cnt; // @[PWM_Generator.scala 35:24]
  wire [33:0] _GEN_5 = {{31'd0}, io_ui_in[7:5]}; // @[PWM_Generator.scala 39:34]
  wire [33:0] _pwm_threshold_T_2 = _GEN_5 << io_ui_in[4:0]; // @[PWM_Generator.scala 39:34]
  wire [33:0] _GEN_6 = {{31'd0}, io_uio_in[7:5]}; // @[PWM_Generator.scala 40:29]
  wire [33:0] _pwm_top_T_2 = _GEN_6 << io_uio_in[4:0]; // @[PWM_Generator.scala 40:29]
  wire [35:0] _pwm_cnt_T_1 = pwm_cnt + 36'h1; // @[PWM_Generator.scala 42:22]
  wire [35:0] pwm_threshold = {{2'd0}, _pwm_threshold_T_2}; // @[PWM_Generator.scala 36:34 39:17]
  wire [35:0] pwm_top = {{2'd0}, _pwm_top_T_2}; // @[PWM_Generator.scala 37:28 40:11]
  wire [5:0] _fnext_T_1 = fnext + fprev; // @[PWM_Generator.scala 48:20]
  wire [6:0] _io_uo_out_T = {io_ena,fnext}; // @[PWM_Generator.scala 55:23]
  assign io_uo_out = {_io_uo_out_T,pwm_out}; // @[PWM_Generator.scala 55:32]
  assign io_uio_out = 8'h0; // @[PWM_Generator.scala 28:14]
  assign io_uio_oe = 8'h0; // @[PWM_Generator.scala 29:13]
  always @(posedge clock) begin
    if (reset) begin // @[PWM_Generator.scala 31:22]
      fprev <= 6'h0; // @[PWM_Generator.scala 31:22]
    end else if (pwm_cnt == pwm_top) begin // @[PWM_Generator.scala 44:29]
      if (fnext == 6'h37) begin // @[PWM_Generator.scala 49:26]
        fprev <= 6'h0; // @[PWM_Generator.scala 50:15]
      end else begin
        fprev <= fnext; // @[PWM_Generator.scala 47:11]
      end
    end
    if (reset) begin // @[PWM_Generator.scala 32:22]
      fnext <= 6'h1; // @[PWM_Generator.scala 32:22]
    end else if (pwm_cnt == pwm_top) begin // @[PWM_Generator.scala 44:29]
      if (fnext == 6'h37) begin // @[PWM_Generator.scala 49:26]
        fnext <= 6'h1; // @[PWM_Generator.scala 51:15]
      end else begin
        fnext <= _fnext_T_1; // @[PWM_Generator.scala 48:11]
      end
    end
    if (reset) begin // @[PWM_Generator.scala 34:24]
      pwm_out <= 1'h0; // @[PWM_Generator.scala 34:24]
    end else begin
      pwm_out <= pwm_cnt <= pwm_threshold; // @[PWM_Generator.scala 43:11]
    end
    if (reset) begin // @[PWM_Generator.scala 35:24]
      pwm_cnt <= 36'h0; // @[PWM_Generator.scala 35:24]
    end else if (pwm_cnt == pwm_top) begin // @[PWM_Generator.scala 44:29]
      pwm_cnt <= 36'h0; // @[PWM_Generator.scala 45:13]
    end else begin
      pwm_cnt <= _pwm_cnt_T_1; // @[PWM_Generator.scala 42:11]
    end
  end
// Register and memory initialization
`ifdef RANDOMIZE_GARBAGE_ASSIGN
`define RANDOMIZE
`endif
`ifdef RANDOMIZE_INVALID_ASSIGN
`define RANDOMIZE
`endif
`ifdef RANDOMIZE_REG_INIT
`define RANDOMIZE
`endif
`ifdef RANDOMIZE_MEM_INIT
`define RANDOMIZE
`endif
`ifndef RANDOM
`define RANDOM $random
`endif
`ifdef RANDOMIZE_MEM_INIT
  integer initvar;
`endif
`ifndef SYNTHESIS
`ifdef FIRRTL_BEFORE_INITIAL
`FIRRTL_BEFORE_INITIAL
`endif
initial begin
  `ifdef RANDOMIZE
    `ifdef INIT_RANDOM
      `INIT_RANDOM
    `endif
    `ifndef VERILATOR
      `ifdef RANDOMIZE_DELAY
        #`RANDOMIZE_DELAY begin end
      `else
        #0.002 begin end
      `endif
    `endif
`ifdef RANDOMIZE_REG_INIT
  _RAND_0 = {1{`RANDOM}};
  fprev = _RAND_0[5:0];
  _RAND_1 = {1{`RANDOM}};
  fnext = _RAND_1[5:0];
  _RAND_2 = {1{`RANDOM}};
  pwm_out = _RAND_2[0:0];
  _RAND_3 = {2{`RANDOM}};
  pwm_cnt = _RAND_3[35:0];
`endif // RANDOMIZE_REG_INIT
  `endif // RANDOMIZE
end // initial
`ifdef FIRRTL_AFTER_INITIAL
`FIRRTL_AFTER_INITIAL
`endif
`endif // SYNTHESIS
endmodule


Reference solution:
rtl/generated.v: 
  // All output pins must be assigned. If not used, assign to 0.
  // assign uo_out  = ui_in + uio_in;  // Example: ou_out is the sum of ui_in and uio_in
  // assign uio_out = 0;
  // assign uio_oe  = 0;
    wire reset = !rst_n;
    // Just wrap the Chisel generated Verilog

    PWM_Generator PWM_Generator(
      .clock(clk),
      .reset(reset),
      .io_ui_in(ui_in),
      .io_uo_out(uo_out),
      .io_uio_in(uio_in),
      .io_uio_out(uio_out),
      .io_uio_oe(uio_oe),
      .io_ena(ena));