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8bitworkshop/test/cli/verilog/t_langext_2.v

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1.1 KiB
Verilog

// DESCRIPTION: Verilator: Verilog Test module
//
// A test of the +1364-1995ext+ and +systemverilogext+ flags.
//
// This source code contains constructs that are valid in SystemVerilog 2009
// but not in Verilog 1995. So it should fail if we set the language to be
// Verilog 1995, but not SystemVerilog 2009.
//
// Compile only test, so no need for "All Finished" output.
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2012 by Jeremy Bennett.
// SPDX-License-Identifier: CC0-1.0
module t (/*AUTOARG*/
// Inputs
clk
);
input clk;
reg [1:0] res;
// Instantiate the test
test test_i (/*AUTOINST*/
// Outputs
.res (res),
// Inputs
.clk (clk),
.in (1'b1));
endmodule
module test (// Outputs
res,
// Inputs
clk,
in
);
output [1:0] res;
input clk;
input in;
// This is a SystemVerilog 2009 only test
generate
genvar i;
for (i=0; i<2; i=i+1) begin
always @(posedge clk) begin
unique0 case (i)
0: res[0:0] <= in;
1: res[1:1] <= in;
endcase
end
end
endgenerate
endmodule