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HalfAdder.java
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HalfAdder.java
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// jchdl: Jianchang Constructed Hardware Description Library
// Copyright (c) 2018 Jianchang Wang <wjcdx@qq.com>
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
package org.jchdl.model.gsl.operator.arithmetic;
import org.jchdl.model.gsl.core.datatype.net.Wire;
import org.jchdl.model.gsl.core.gate.ni.atomic.And;
import org.jchdl.model.gsl.core.gate.ni.atomic.Xor;
import org.jchdl.model.gsl.core.meta.Node;
public class HalfAdder extends Node {
private Wire a;
private Wire b;
private Wire s;
private Wire c;
public HalfAdder(Wire s, Wire c, Wire a, Wire b) {
in(a);
in(b);
out(s);
out(c);
construct();
}
@Override
public void logic() {
a = new Wire(in(0));
b = new Wire(in(1));
s = new Wire(out(0));
c = new Wire(out(1));
Xor.inst(s, a, b);
And.inst(c, a, b);
}
public static HalfAdder inst(Wire sum, Wire cout, Wire a, Wire b) {
return new HalfAdder(sum, cout, a, b);
}
}