56 lines
1.6 KiB
Systemverilog
56 lines
1.6 KiB
Systemverilog
// DESCRIPTION: Verilator: Interface array with multiple consumer modules using FUNCREF LPARAMs
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//
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// This program is free software; you can redistribute it and/or modify it
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// under the terms of either the GNU Lesser General Public License Version 3
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// or the Perl Artistic License Version 2.0.
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// SPDX-FileCopyrightText: 2026 Wilson Snyder
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// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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// verilog_format: off
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`define stop $stop
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`define checkd(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d: got=%0d exp=%0d (%s !== %s)\n", `__FILE__,`__LINE__, (gotv), (expv), `"gotv`", `"expv`"); `stop; end while(0);
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// verilog_format: on
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package pkg;
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function automatic int decode_width(int value);
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return (value > 0) ? value * 2 : 0;
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endfunction
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endpackage
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interface ifc #(
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parameter int WIDTH = 8
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);
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localparam int DEPTH = $clog2(WIDTH);
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localparam int DECODED = pkg::decode_width(DEPTH);
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endinterface
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module producer (
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ifc i
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);
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localparam int BUF_SIZE = pkg::decode_width(i.DEPTH);
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localparam int OUT_W = i.DECODED + 1;
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endmodule
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module consumer (
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ifc i
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);
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localparam int HALF = i.DECODED / 2;
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localparam int TAG_W = pkg::decode_width(i.DEPTH) + i.DECODED;
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endmodule
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module t;
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ifc #(.WIDTH(64)) bus[2] ();
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producer p (.i(bus[0]));
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consumer c (.i(bus[1]));
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initial begin
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// WIDTH=64, DEPTH=$clog2(64)=6, DECODED=decode_width(6)=12
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`checkd(p.BUF_SIZE, 12); // decode_width(6) = 12
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`checkd(p.OUT_W, 13); // 12 + 1 = 13
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`checkd(c.HALF, 6); // 12 / 2 = 6
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`checkd(c.TAG_W, 24); // decode_width(6) + 12 = 12 + 12 = 24
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$write("*-* All Finished *-*\n");
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$finish;
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end
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endmodule
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