verilator/test_regress/t/t_trace_public.v
Wilson Snyder 3b1929259a Support negative bit indexes.
Allow arbitrary characters in symbols (to make '-' work.)
Final merge from negative_lsb branch.
2008-10-06 09:59:22 -04:00

48 lines
801 B
Verilog

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2008 by Wilson Snyder.
module t (
input wire CLK,
output reg RESET
);
neg neg (.clk(CLK));
glbl glbl;
initial RESET = 1'b1;
always @ (posedge CLK)
RESET <= glbl.GSR;
endmodule
module glbl();
`ifdef PUB_FUNC
wire GSR;
task setGSR;
/* verilator public */
input value;
GSR = value;
endtask
`else
wire GSR /*verilator public*/;
`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