HalfAdderElm.java

/*    
    Copyright (C) Paul Falstad and Iain Sharp
    
    This file is part of CircuitJS1.

    CircuitJS1 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 2 of the License, or
    (at your option) any later version.

    CircuitJS1 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 CircuitJS1.  If not, see <http://www.gnu.org/licenses/>.
*/

package com.lushprojects.circuitjs1.client;

//import java.awt.*;
//import java.util.StringTokenizer;

    class HalfAdderElm extends ChipElm {
	boolean hasReset() {return false;}
	public HalfAdderElm(int xx, int yy) { super(xx, yy); }
	public HalfAdderElm(int xa, int ya, int xb, int yb, int f,
			    StringTokenizer st) {
	    super(xa, ya, xb, yb, f, st);
	}
	String getChipName() { return "Half Adder"; }

	void setupPins() {
	    sizeX=2;
	    sizeY=2;
	    pins=new Pin[getPostCount()];

	    pins[0] = new Pin(0, SIDE_E, "S");
	    pins[0].output=true;
	    pins[1] = new Pin(1, SIDE_E, "C");
	    pins[1].output=true;		
	    pins[2] = new Pin(0, SIDE_W, "A");
	    pins[3] = new Pin(1, SIDE_W, "B");

	}
	int getPostCount() {
	    return 4;
	}
	int getVoltageSourceCount() {return 2;}

	void execute() {
	
	pins[0].value=pins[2].value^pins[3].value;
	pins[1].value=pins[2].value&&pins[3].value;
	}
	int getDumpType() { return 195; }

    }