101 lines
2.4 KiB
Systemverilog
Executable File
101 lines
2.4 KiB
Systemverilog
Executable File
// DESCRIPTION: Verilator: Verilog Test module
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//
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// This file ONLY is placed under the Creative Commons Public Domain, for
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// any use, without warranty, 2025 by PlanV GmbH.
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// SPDX-License-Identifier: CC0-1.0
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// Enum-based associative array
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typedef enum { RED, GREEN, YELLOW } color_t;
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class AssocArrayEnum;
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rand bit [7:0] colors [color_t];
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constraint c1 { foreach (colors[i]) colors[i] == 4; }
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function new();
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colors[RED] = 8'd5;
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colors[GREEN] = 8'd10;
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colors[YELLOW] = 8'd15;
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endfunction
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function void self_check();
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foreach (colors[i]) begin
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if (colors[i] != 4) $stop;
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end
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endfunction
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endclass
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// Struct (packed) index associative array
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typedef struct packed {
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bit [2:0] high;
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bit [1:0] low;
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} PackedIndexType;
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class AssocArrayPackedStruct;
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rand bit [31:0] data [PackedIndexType];
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constraint c2 { foreach (data[i]) data[i] == 100; }
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function new();
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PackedIndexType idx;
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idx.high = 3'd1;
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idx.low = 2'd1;
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data[idx] = 32'd50;
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endfunction
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function void self_check();
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foreach (data[i]) begin
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if (data[i] != 100) $stop;
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end
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endfunction
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endclass
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// Array (packed) index associative array
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typedef logic [2:0][7:0] IndexArrayType;
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class AssocArrayArrayIndex;
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rand bit [31:0] data [IndexArrayType];
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constraint c3 { foreach (data[i]) data[i] == 0; }
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function new();
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IndexArrayType idx;
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idx = 0;
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data[idx] = 32'd75;
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endfunction
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function void self_check();
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foreach (data[i]) begin
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if (data[i] != 0) $stop;
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end
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endfunction
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endclass
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module t_constraint_assoc_array_others;
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AssocArrayEnum enum_arr;
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AssocArrayPackedStruct packed_arr;
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AssocArrayArrayIndex array_arr;
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int success = 0;
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initial begin
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// Create instances of the classes
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enum_arr = new();
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packed_arr = new();
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array_arr = new();
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// Randomization and self-check
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success = enum_arr.randomize();
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if (success != 1) $stop;
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enum_arr.self_check();
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success = packed_arr.randomize();
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if (success != 1) $stop;
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packed_arr.self_check();
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success = array_arr.randomize();
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if (success != 1) $stop;
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array_arr.self_check();
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$write("*-* All Finished *-*");
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$finish;
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end
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endmodule
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