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/*
Copyright (C) 1998,1999,2000 T. Scott Dattalo
This file is part of gpsim.
gpsim 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, or (at your option)
any later version.
gpsim 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 gpsim; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef __LOGIC_H__
#define __LOGIC_H__
/* IN_MODULE should be defined for modules */
#define IN_MODULE
#include "../src/stimuli.h"
#include "../src/ioports.h"
#include "../src/symbol.h"
#include "../src/modules.h"
#ifdef HAVE_GUI
#include <gtk/gtk.h>
#endif
class LogicGate;
class ANDGate;
class AND2Gate;
/*********************************************************
*
* Create a class derived from the IO_input class that
* will allow us to intercept when the I/O input is being
* driven. (This isn't done for PIC I/O pins because the
* logic for handling I/O pin changes resides in the IOPORT
* class.)
*/
class Logic_Input : public IOPIN
{
private:
LogicGate *LGParent;
unsigned int m_iobit;
public:
virtual void setDrivenState( bool new_state);
Logic_Input (LogicGate *parent, unsigned int b, const char *opt_name=0)
: IOPIN(opt_name), LGParent(parent), m_iobit(b)
{
}
};
class Logic_Output : public IO_bi_directional
{
private:
LogicGate *LGParent;
unsigned int m_iobit;
public:
Logic_Output (LogicGate *parent, unsigned int b,const char *opt_name=0)
: IO_bi_directional(opt_name), LGParent(parent), m_iobit(b)
{
}
};
/*************************************************************
*
* LogicGate class.
*
* Here's the definition for the LogicGate class and all of its
* children
*
* Module
* |
* --------
* |
* |-LogicGate
* |
* |- ANDGate
* | |
* | |- AND2Gate
* |- ORGate
* |
* |- OR2Gate
*/
class LogicGate : public Module
{
public:
int number_of_pins;
unsigned int input_bit_mask;
unsigned int input_state;
IOPIN **pInputPins;
Logic_Output *pOutputPin;
#ifdef HAVE_GUI
GdkPixmap *pixmap;
#endif
LogicGate(void);
~LogicGate(void);
// Inheritances from the Package class
virtual void create_iopin_map(void);
virtual void update_state(void)=0;
void update_input_pin(unsigned int pin, bool bValue);
virtual int get_num_of_pins(void) {return number_of_pins;};
void set_number_of_pins(int npins){number_of_pins=npins;};
#ifdef HAVE_GUI
GtkWidget *create_pixmap(char **pixmap_data);
#endif
};
// 2 input and gate
class ANDGate: public LogicGate
{
public:
virtual void update_state(void);
};
class AND2Gate: public ANDGate
{
public:
static Module *construct(const char *new_name);
const virtual char *type(void) { return ("and2"); };
// virtual void update_state(void);
AND2Gate(void);
~AND2Gate(void);
};
class ORGate: public LogicGate
{
public:
virtual void update_state(void);
};
// 2 input or gate
class OR2Gate: public ORGate
{
public:
//virtual void update_state(void);
static Module *construct(const char *new_name);
const virtual char *type(void) { return ("or2"); };
OR2Gate(void);
~OR2Gate(void);
};
class XORGate: public LogicGate
{
public:
virtual void update_state(void);
};
// 2 input or gate
class XOR2Gate: public XORGate
{
public:
//virtual void update_state(void);
static Module *construct(const char *new_name);
const virtual char *type(void) { return ("xor2"); };
XOR2Gate(void);
~XOR2Gate(void);
};
class NOTGate: public LogicGate
{
public:
//virtual void update_state(void);
static Module *construct(const char *new_name);
const virtual char *type(void) { return ("not"); };
virtual void update_state(void);
NOTGate(void);
~NOTGate(void);
};
#endif // __LOGIC_H__
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