File indexing completed on 2024-05-05 05:46:06 

0001 /***************************************************************************
0002  *   Copyright (C) 2005 by David Saxton                                    *
0003  *   david@bluehaze.org                                                    *
0004  *                                                                         *
0005  *   This program is free software; you can redistribute it and/or modify  *
0006  *   it under the terms of the GNU General Public License as published by  *
0007  *   the Free Software Foundation; either version 2 of the License, or     *
0008  *   (at your option) any later version.                                   *
0009  ***************************************************************************/
0010 
0011 #ifndef FLIPFLOP_H
0012 #define FLIPFLOP_H
0013 
0014 #include "component.h"
0015 #include "logic.h"
0016 
0017 class Simulator;
0018 
0019 class ClockedFlipFlop : public CallbackClass, public Component
0020 {
0021 public:
0022     ClockedFlipFlop(ICNDocument *icnDocument, bool newItem, const char *id);
0023 
0024 protected:
0025     enum EdgeTrigger { Rising, Falling };
0026     void dataChanged() override;
0027     virtual void initSymbolFromTrigger() = 0;
0028     EdgeTrigger m_edgeTrigger;
0029 };
0030 
0031 /**
0032 @short Boolean D-Type Flip-Flop
0033 @author David Saxton
0034 */
0035 class ECDFlipFlop : public ClockedFlipFlop
0036 {
0037 public:
0038     ECDFlipFlop(ICNDocument *icnDocument, bool newItem, const char *id = nullptr);
0039     ~ECDFlipFlop() override;
0040 
0041     static Item *construct(ItemDocument *itemDocument, bool newItem, const char *id);
0042     static LibraryItem *libraryItem();
0043 
0044 protected:
0045     void drawShape(QPainter &p) override;
0046     void initSymbolFromTrigger() override;
0047 public: // internal interfaces
0048     void inputChanged(bool newState);
0049     void inStateChanged(bool newState);
0050     void asyncChanged(bool newState);
0051     void clockChanged(bool newState);
0052 
0053 protected:
0054     LogicIn *m_pD;
0055     LogicIn *m_pClock;
0056     LogicOut *m_pQ;
0057     LogicOut *m_pQBar;
0058     LogicIn *setp;
0059     LogicIn *rstp;
0060     bool m_bPrevClock;
0061 
0062     bool m_prevD;
0063     unsigned long long m_prevDChangeSimTime;
0064     Simulator *m_pSimulator;
0065 };
0066 
0067 /**
0068 @short Boolean JK-Type Flip-Flop
0069 @author Couriousous
0070 */
0071 class ECJKFlipFlop : public ClockedFlipFlop
0072 {
0073 public:
0074     ECJKFlipFlop(ICNDocument *icnDocument, bool newItem, const char *id = nullptr);
0075     ~ECJKFlipFlop() override;
0076 
0077     static Item *construct(ItemDocument *itemDocument, bool newItem, const char *id);
0078     static LibraryItem *libraryItem();
0079 
0080 private:
0081     void drawShape(QPainter &p) override;
0082     void initSymbolFromTrigger() override;
0083     void inStateChanged(bool newState);
0084 public: // internal interfaces
0085     void asyncChanged(bool newState);
0086     void clockChanged(bool newState);
0087 protected:
0088     bool prev_state;
0089     bool m_bPrevClock;
0090     LogicIn *m_pJ;
0091     LogicIn *m_pClock;
0092     LogicIn *m_pK;
0093     LogicIn *setp;
0094     LogicIn *rstp;
0095     LogicOut *m_pQ;
0096     LogicOut *m_pQBar;
0097 };
0098 
0099 /**
0100 @short Boolean Set-Reset Flip-Flop
0101 @author David Saxton
0102 */
0103 class ECSRFlipFlop : public CallbackClass, public Component
0104 {
0105 public:
0106     ECSRFlipFlop(ICNDocument *icnDocument, bool newItem, const char *id = nullptr);
0107     ~ECSRFlipFlop() override;
0108 
0109     static Item *construct(ItemDocument *itemDocument, bool newItem, const char *id);
0110     static LibraryItem *libraryItem();
0111 
0112 public: // internal interfaces
0113     void inStateChanged(bool newState);
0114 protected:
0115     LogicIn *m_pS;
0116     LogicIn *m_pR;
0117     LogicOut *m_pQ;
0118     LogicOut *m_pQBar;
0119     bool old_q1;
0120     bool old_q2;
0121 };
0122 
0123 #endif