HTTP/1.1 200 OK

Date: Tue, 12 Jun 2001 17:29:17 GMT

Server: Apache/1.3.12 (Unix) ApacheJServ/1.1.2

Set-Cookie: Apache=204.210.50.240.24258992366957173; path=/

Last-Modified: Tue, 21 May 1996 20:08:41 GMT

ETag: "a18e7-10fe-31a222c9"

Accept-Ranges: bytes

Content-Length: 4350

Connection: close

Content-Type: text/plain



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

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

//

// JKFlipFlop.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 a JK-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 JKFlipFlop extends IntegratedCircuit {



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

// The constructor of a JK flip flop

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

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

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

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

        IPin[1] = new InputPin("C", 1, 3, 2, 0, 0, 0, ComponentPin.PIN_EDGETRIGGERED); // name, x, y, w, h, flags

        IPin[2] = new InputPin("K", 1, 4, 2, 0, 0, 0, ComponentPin.PIN_NOACTION); // 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 = "JK-flipflop";

        ClassName = "JKFlipFlop";

        RegisterPins (PinGrid, x, y);

    }



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

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

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

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

        super (CompToCopy, xo, yo);

    }



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

// Method for copying this component.

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

    public ElectronicComponent Copy(int xo, int yo) {

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

        return NewComponent;

    }



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

// This method is simulating the component

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

    public void SimulateLogic() {

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

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

            // Clock transition Low to High

             if (IPin[0].getLevel() == 5 && IPin[2].getLevel() == 5) { // JK

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

                    OPin[0].setLevel(5);

                    OPin[1].setLevel(5);

            } else if (IPin[2].getLevel() == 5) {       // K

                    OPin[0].setLevel(0);

                    OPin[1].setLevel(0);

            } // Outputs remain unchanged if J == K == 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();

    }



    public void Simulate(int id) {

        InformConnectedComponentsOldLevel(id);

    }



}