59 lines
1.1 KiB
Text
59 lines
1.1 KiB
Text
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`timescale 1ns / 1ps
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/**
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* counter: a generic clearable up-counter
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*/
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module counter
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#(parameter WIDTH=64, NAME="world")
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(
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input clk,
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input ce,
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input arst_n,
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output reg [WIDTH-1:0] q
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);
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string name = "counter";
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localparam val0 = 12'ha1f;
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localparam val1 = 12'h1fa;
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localparam val2 = 12'hfa1;
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// some child
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clock_buffer #(WIDTH) buffer_inst (
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.clk(clk),
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.ce(ce),
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.reset(arst_n)
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);
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// Simple gated up-counter with async clear
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always @(posedge clk or negedge arst_n) begin
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if (arst_n == 1'b0) begin
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q <= {WIDTH {1'b0}};
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end
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else begin
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q <= q;
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if (ce == 1'b1) begin
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q <= q + 1;
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end
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end
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end
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function int add_one(int x);
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return x + 1;
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endfunction : add_one
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`ifdef SIMULATION
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initial $display("Hello %s", NAME);
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`endif
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endmodule : counter
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class my_data extends uvm_data;
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int x, y;
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function add_one();
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x++;
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y++;
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endfunction : add_one
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endclass : my_data
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