z80.h

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#ifndef __PZ80emu__z80__
#define __PZ80emu__z80__
 
#include <stdint.h>
 
#include "bus.h"
 
#define INIT_PC 0x0000
 
#define INTERRUPT_PERIOD 10240
 
typedef union {
    uint16_t W; 
    struct {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
        /* ...in low-endian architecture */
        uint8_t l; 
        uint8_t h; 
#else
        /* ...in high-endian architecture */
        uint8_t h; 
        uint8_t l; 
#endif
    } B;
} word;
 
typedef enum {
    IM0,            
    IM1,            
    IM2         
} interrupt_mode;
 
struct z80 {
    int     counter;    
    word        pc;     
    word        af;     
    word        bc;     
    word        de;     
    word        hl;     
    word        ix;     
    word        iy;     
    word        ir;     
    word        _af;        
    word        _bc;        
    word        _de;        
    word        _hl;        
    word        sp;     
    struct bus  *bus;       
    interrupt_mode  im;         
    bool        iff1;       
    bool        iff2;       
};
 
#define CARRY 0         
#define SUBTRACT 1      
#define PARITY_OVERFLOW 2   
#define F3 3            
#define HALF_CARRY 4        
#define F5 5            
#define ZERO 6          
#define SIGN 7          
__BEGIN_DECLS
struct z80 *new_cpu(void);
void reset_cpu(struct z80 *);
int run(struct z80 *, uint8_t *, long, bool);
__END_DECLS
 
#endif /* defined(__PZ80emu__z80__) */