flipflop.h

/***************************************************************************
 *   Copyright (C) 2005 by David Saxton                                    *
 *   david@bluehaze.org                                                    *
 *                                                                         *
 *   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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#ifndef FLIPFLOP_H
#define FLIPFLOP_H

#include "component.h"
#include "logic.h"

class Simulator;

class ECDFlipFlop : public CallbackClass, public Component
{
public:
        ECDFlipFlop( ICNDocument *icnDocument, bool newItem, const char *id = 0 );
        ~ECDFlipFlop();
        virtual bool canFlip() const { return true; }
        
        static Item* construct( ItemDocument *itemDocument, bool newItem, const char *id );
        static LibraryItem *libraryItem();
        
private:
        void inputChanged( bool newState );
        void inStateChanged( bool newState );
        void asyncChanged(bool newState );
        void clockChanged(bool newState );
        
        LogicIn *m_pD;
        LogicIn *m_pClock;
        LogicOut *m_pQ;
        LogicOut *m_pQBar;
        LogicIn *setp;
        LogicIn *rstp;
        bool m_bPrevClock;
        
        bool m_prevD[2];
        unsigned m_whichPrevD:1;
        unsigned long long m_prevDSimTime;
        Simulator * m_pSimulator;
};


class ECJKFlipFlop : public CallbackClass, public Component
{
public:
        ECJKFlipFlop( ICNDocument *icnDocument, bool newItem, const char *id = 0 );
        ~ECJKFlipFlop();
        virtual bool canFlip() const { return true; }
        
        static Item* construct( ItemDocument *itemDocument, bool newItem, const char *id );
        static LibraryItem *libraryItem();
        
private:
        void inStateChanged( bool newState );
        void asyncChanged(bool newState );
        void clockChanged(bool newState );
        bool prev_state;
        LogicIn *m_pJ;
        LogicIn *m_pClock;
        LogicIn *m_pK;
        LogicIn *setp;
        LogicIn *rstp;
        LogicOut *m_pQ;
        LogicOut *m_pQBar;
};


class ECSRFlipFlop : public CallbackClass, public Component
{
public:
        ECSRFlipFlop( ICNDocument *icnDocument, bool newItem, const char *id = 0 );
        ~ECSRFlipFlop();
        virtual bool canFlip() const { return true; }
        
        static Item* construct( ItemDocument *itemDocument, bool newItem, const char *id );
        static LibraryItem *libraryItem();
        
protected:
        void inStateChanged( bool newState );
        LogicIn * m_pS;
        LogicIn * m_pR;
        LogicOut * m_pQ;
        LogicOut * m_pQBar;
        bool old_q1;
        bool old_q2;
};

#endif

---