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// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2008 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
module t (
input wire CLK,
output reg RESET
);
neg neg (.clk(CLK));
little little (.clk(CLK));
glbl glbl ();
// A vector
logic [2:1] vec [4:3];
integer val = 0;
always @ (posedge CLK) begin
if (RESET) val <= 0;
else val <= val + 1;
vec[3] <= val[1:0];
vec[4] <= val[3:2];
end
initial RESET = 1'b1;
always @ (posedge CLK)
RESET <= glbl.GSR;
endmodule
module glbl();
`ifdef PUB_FUNC
reg GSR;
task setGSR;
`ifdef ATTRIBUTES
/* verilator public */
`endif
input value;
GSR = value;
endtask
`else
`ifdef ATTRIBUTES
reg GSR /*verilator public*/;
`else
reg GSR;
`endif
`endif
endmodule
module neg (
input clk
);
reg [0:-7] i8; initial i8 = '0;
reg [-1:-48] i48; initial i48 = '0;
reg [63:-64] i128; initial i128 = '0;
always @ (posedge clk) begin
i8 <= ~i8;
i48 <= ~i48;
i128 <= ~i128;
end
endmodule
module little (
input clk
);
// verilator lint_off ASCRANGE
reg [0:7] i8; initial i8 = '0;
reg [1:49] i48; initial i48 = '0;
reg [63:190] i128; initial i128 = '0;
// verilator lint_on ASCRANGE
always @ (posedge clk) begin
i8 <= ~i8;
i48 <= ~i48;
i128 <= ~i128;
end
endmodule
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