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parallella-hw/archive/fpga/old/hdl/elink-gold/toggle2pulse.v
Andreas Olofsson 046706db8a Reorg
2016-02-03 00:43:14 -05:00

51 lines
1.1 KiB
Verilog

/*
Copyright (C) 2013 Adapteva, Inc.
Contributed by Andreas Olofsson <support@adapteva.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 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 (see the file COPYING). If not, see
<http://www.gnu.org/licenses/>.
*/
module toggle2pulse(/*AUTOARG*/
// Outputs
out,
// Inputs
clk, in, reset
);
//clocks
input clk;
input in;
output out;
//reset
input reset;
reg out_reg;
always @ (posedge clk or posedge reset)
if(reset)
out_reg <= 1'b0;
else
out_reg <= in;
assign out = in ^ out_reg;
endmodule