47 lines
1.5 KiB
Coq
47 lines
1.5 KiB
Coq
|
/*
|
||
|
|
* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
|
||
|
|
*
|
||
|
|
* This source code is free software; you can redistribute it
|
||
|
|
* and/or modify it in source code form under the terms of the GNU
|
||
|
|
* General Public License as published by the Free Software
|
||
|
|
* Foundation; either version 2 of the License, or (at your option)
|
||
|
|
* any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Bit select of a net (a wire) using the index of a for loop.
|
||
|
|
*/
|
||
|
|
|
||
|
|
module main;
|
||
|
|
|
||
|
|
// Make a vector of bits, an array of functors in practice, and
|
||
|
|
// create a net that hooks to that array backwards.
|
||
|
|
reg [5:1] vect = 5'b10100;
|
||
|
|
wire [5:1] tmp = { vect[1], vect[2], vect[3], vect[4], vect[5] };
|
||
|
|
|
||
|
|
reg [2:0] idx;
|
||
|
|
initial begin
|
||
|
|
#1 $display("vect=%b, tmp=%b", vect, tmp);
|
||
|
|
|
||
|
|
for (idx = 1 ; idx <= 5 ; idx = idx + 1) begin
|
||
|
|
$display("idx=%d: vect=%b, tmp=%b", idx, vect[idx], tmp[idx]);
|
||
|
|
if (tmp[idx] !== vect[6-idx]) begin
|
||
|
|
$display("FAILED");
|
||
|
|
$finish;
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
$display("PASSED");
|
||
|
|
end
|
||
|
|
|
||
|
|
endmodule // main
|