44 lines
1.4 KiB
Systemverilog
44 lines
1.4 KiB
Systemverilog
// 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 Wilson Snyder.
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// SPDX-License-Identifier: CC0-1.0
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`define stop $stop
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`define checko(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d: got='h%x exp='h%x\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
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module t;
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string s;
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initial begin
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s = $sformatf("\099 \119 \121"); // Q Q Q
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// $display("%o %o %o %o %o", s[0], s[1], s[2], s[3], s[4]);
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// Results vary by simulator. Some possibilities:
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// 0 0 0 0 0
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// 40 71 71 40 11
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// 71 71 40 11 071
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s = $sformatf("\088 \108 \110"); // H H H
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// $display("%o %o %o %o %o", s[0], s[1], s[2], s[3], s[4]);
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// Results vary by simulator. Some possibilities:
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// 0 0 0 0 0
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// 40 70 70 40 10
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// 70 70 40 10 70
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s = $sformatf("\102\3\12."); // B\023\312.
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// $display("%o %o %o %o %o", s[0], s[1], s[2], s[3], s[4]);
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`checko(s[0], 8'o102);
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`checko(s[1], 8'o003);
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`checko(s[2], 8'o012);
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`checko(s[3], 8'o056);
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s = $sformatf("\102.\3.\12\103"); // B.\023.C
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// $display("%o %o %o %o %o", s[0], s[1], s[2], s[3], s[4]);
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`checko(s[0], 8'o102);
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`checko(s[2], 8'o003);
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`checko(s[4], 8'o012);
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`checko(s[5], 8'o103);
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$display("*-* All Finished *-*");
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$finish;
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end
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endmodule
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