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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, 2010 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
module t (/*AUTOARG*/
// Inputs
rst_sync_l, rst_both_l, rst_async_l, d, clk
);
/*AUTOINPUT*/
// Beginning of automatic inputs (from unused autoinst inputs)
input clk; // To sub1 of sub1.v, ...
input d; // To sub1 of sub1.v, ...
input rst_async_l; // To sub2 of sub2.v
input rst_both_l; // To sub1 of sub1.v, ...
input rst_sync_l; // To sub1 of sub1.v
// End of automatics
sub1 sub1 (/*AUTOINST*/
// Inputs
.clk (clk),
.rst_both_l (rst_both_l),
.rst_sync_l (rst_sync_l),
.d (d));
sub2 sub2 (/*AUTOINST*/
// Inputs
.clk (clk),
.rst_both_l (rst_both_l),
.rst_async_l (rst_async_l),
.d (d));
endmodule
module sub1 (/*AUTOARG*/
// Inputs
clk, rst_both_l, rst_sync_l, d
);
input clk;
input rst_both_l;
input rst_sync_l;
//input rst_async_l;
input d;
reg q1;
reg q2;
always @(posedge clk) begin
if (~rst_sync_l) begin
/*AUTORESET*/
// Beginning of autoreset for uninitialized flops
q1 <= 1'h0;
// End of automatics
end else begin
q1 <= d;
end
end
always @(posedge clk) begin
q2 <= (rst_both_l) ? d : 1'b0;
if (0 && q1 && q2) ;
end
endmodule
module sub2 (/*AUTOARG*/
// Inputs
clk, rst_both_l, rst_async_l, d
);
input clk;
input rst_both_l;
//input rst_sync_l;
input rst_async_l;
input d;
reg q1;
reg q2;
reg q3;
always @(posedge clk or negedge rst_async_l) begin
if (~rst_async_l) begin
/*AUTORESET*/
// Beginning of autoreset for uninitialized flops
q1 <= 1'h0;
// End of automatics
end else begin
q1 <= d;
end
end
always @(posedge clk or negedge rst_both_l) begin
q2 <= (~rst_both_l) ? 1'b0 : d;
end
// Make there be more async uses than sync uses
always @(posedge clk or negedge rst_both_l) begin
q3 <= (~rst_both_l) ? 1'b0 : d;
if (0 && q1 && q2 && q3) ;
end
endmodule
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