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//****************************************************************************

// ---- version information ----

//

// EdgeTriggeredTFlipFlop.java   v 1.00 b1

// Written by:                   I. van Rienen / E-mail ivr@bart.nl

// URL:                          http://www/bart.nl/~ivr

// Initial release:

// Released in public domain:

//

// ---- Description ----

// Java class containing methods for an Edge Triggered T flip flop

//

// This program and the Java source is in the public domain.

// Permission to use, copy, modify, and distribute this software

// and its documentation for NON-COMMERCIAL purposes and

// without fee is hereby granted.

//

//    Copyright 1996

//

//    Iwan van Rienen

//    Joan Maetsuyckerstr. 145

//    2593 ZG  The Hague

//    The Netherlands

//

// I am not responsible for any bugs in this program and

// possible damage to hard- or software when using this program.

//****************************************************************************

import java.applet.Applet;

import java.awt.*;

import java.util.Vector;



class EdgeTriggeredTFlipFlop extends IntegratedCircuit {



//----------------------------------------------------------------------------

// The constructor of a new Edge-triggered toggle flipflop.

//----------------------------------------------------------------------------

    public EdgeTriggeredTFlipFlop(Pin PinGrid[][], int x, int y) {

        super (x, y, 10, 6, 3, 1, 4, 4, 2, 2);      // x,y,w,h HitBox x,y,w,h,I,O

        IPin[0] = new InputPin("T", 1, 2, 2, 0, 0, 0, ComponentPin.PIN_NOACTION); // name, x, y, w, h, flags

        IPin[1] = new InputPin("C", 1, 4, 2, 0, 0, 0, ComponentPin.PIN_EDGETRIGGERED); // name, x, y, w, h, flags

        OPin[0] = new OutputPin("Q", 9, 2, -2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, flags

        OPin[1] = new OutputPin("Q", 9, 4, -2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, flags

        ComponentName = "Edge triggered T-flipflop";

        ClassName = "EdgeTriggeredTFlipFlop";

        RegisterPins (PinGrid, x, y);

    }



//----------------------------------------------------------------------------

// The constructor of a new T-flip flop, which is a copy of CompToCopy

//----------------------------------------------------------------------------

    public EdgeTriggeredTFlipFlop (ElectronicComponent CompToCopy, int xo, int yo) {

        super (CompToCopy, xo, yo);

    }



//----------------------------------------------------------------------------

// Method for copying this component.

//----------------------------------------------------------------------------

    public ElectronicComponent Copy(int xo, int yo) {

        EdgeTriggeredTFlipFlop NewComponent = new EdgeTriggeredTFlipFlop(this, xo, yo);

        return NewComponent;

    }



//----------------------------------------------------------------------------

// Here is the code that's simulating the component

//----------------------------------------------------------------------------

    public void SimulateLogic() {

//      System.out.println ("Edge triggered TFlipFlop SimulateLogic()");



         if (IPin[1].getOldLevel() == 0 && IPin[1].getLevel() == 5) {

//          System.out.println ("**** Edge triggered");

            if (IPin[0].getLevel() == 5) {

                // Toggle output

                if (OPin[0].getLevel() == 0) {

                    OPin[0].setLevel (5);

                    OPin[1].setLevel (5);

                } else {

                    OPin[0].setLevel (0);

                    OPin[1].setLevel (0);

                }

            }

        } else {

            // Nothing happened. Outputs remain unchanged.

            // do setLevel() for modifying OldLevel.

            OPin[0].setLevel (OPin[0].getLevel());

            OPin[1].setLevel (OPin[0].getLevel());

        }





        IPin[1].OldLevel = IPin[1].getLevel();

    }



//----------------------------------------------------------------------------

// When this Simulate() method is called, Inform all conneced components

// with the OLD level of the output port. This because it's an edge-

// triggered component.

//----------------------------------------------------------------------------

    public void Simulate(int id) {

        InformConnectedComponentsOldLevel(id);

    }



}