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// DESCRIPTION: Verilator: Verilog Test module
//
// Copyright 2010 by Wilson Snyder. This program is free software; you can
// redistribute it and/or modify it under the terms of either the GNU
// Lesser General Public License Version 3 or the Perl Artistic License
// Version 2.0.
// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
`ifdef USE_VPI_NOT_DPI
//We call it via $c so we can verify DPI isn't required - see bug572
`else
import "DPI-C" context function integer mon_check();
`endif
`ifdef VERILATOR_COMMENTS
`define PUBLIC_FLAT_RD /*verilator public_flat_rd*/
`define PUBLIC_FLAT_RW /*verilator public_flat_rw @(posedge clk)*/
`else
`define PUBLIC_FLAT_RD
`define PUBLIC_FLAT_RW
`endif
module t (/*AUTOARG*/
// Inputs
input clk `PUBLIC_FLAT_RD,
// test ports
input [15:0] testin `PUBLIC_FLAT_RD,
output [23:0] testout `PUBLIC_FLAT_RW
);
`ifdef VERILATOR
`systemc_header
extern "C" int mon_check();
`verilog
`endif
reg onebit `PUBLIC_FLAT_RW;
reg [2:1] twoone `PUBLIC_FLAT_RW;
reg onetwo [1:2] `PUBLIC_FLAT_RW;
reg [2:1] fourthreetwoone[4:3] `PUBLIC_FLAT_RW;
integer status;
`ifdef IVERILOG
// stop icarus optimizing signals away
wire redundant = onebit | onetwo[1] | twoone | fourthreetwoone[3];
`endif
wire subin `PUBLIC_FLAT_RD;
wire subout `PUBLIC_FLAT_RD;
sub sub(.*);
// Test loop
initial begin
`ifdef VERILATOR
status = $c32("mon_check()");
`endif
`ifdef IVERILOG
status = $mon_check();
`endif
`ifndef USE_VPI_NOT_DPI
status = mon_check();
`endif
if (status!=0) begin
$write("%%Error: t_vpi_var.cpp:%0d: C Test failed\n", status);
$stop;
end
$write("*-* All Finished *-*\n");
$finish;
end
endmodule : t
module sub (
input subin `PUBLIC_FLAT_RD,
output subout `PUBLIC_FLAT_RD
);
endmodule : sub
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