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/***************************************************************************
c64cia.h - C64 CIAs
-------------------
begin : Fri Apr 4 2001
copyright : (C) 2001 by Simon White
email : s_a_white@email.com
***************************************************************************/
/***************************************************************************
* *
* 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 _c64cia_h_
#define _c64cia_h_
// The CIA emulations are very generic and here we need to effectively
// wire them into the computer (like adding a chip to a PCB).
#include "c64env.h"
#include "../mos6526/mos6526.h"
/* CIA 1 specifics:
Generates IRQs
*/
class c64cia1: public MOS6526
{
private:
c64env &m_env;
protected:
void interrupt (bool state)
{
m_env.interruptIRQ (state);
}
public:
c64cia1 (c64env *env)
:MOS6526(&(env->context ())),
m_env(*env) {}
const char *error (void) {return "";}
};
/* CIA 2 specifics:
Generates NMIs
*/
class c64cia2: public MOS6526
{
private:
c64env &m_env;
protected:
void interrupt (bool state)
{
if (state)
m_env.interruptNMI ();
}
public:
c64cia2 (c64env *env)
:MOS6526(&(env->context ())),
m_env(*env) {}
const char *error (void) {return "";}
};
#endif // _c64cia_h_
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