#ifndef Z80_H
#define Z80_H

#include "cpuintrf.h"
#include "osd_cpu.h"

enum {
	Z80_PC=1, Z80_SP, Z80_AF, Z80_BC, Z80_DE, Z80_HL,
	Z80_IX, Z80_IY,	Z80_AF2, Z80_BC2, Z80_DE2, Z80_HL2,
	Z80_R, Z80_I, Z80_IM, Z80_IFF1, Z80_IFF2, Z80_HALT,
	Z80_NMI_STATE, Z80_IRQ_STATE, Z80_DC0, Z80_DC1, Z80_DC2, Z80_DC3
};

enum {
	Z80_TABLE_op,
	Z80_TABLE_cb,
	Z80_TABLE_ed,
	Z80_TABLE_xy,
	Z80_TABLE_xycb,
	Z80_TABLE_ex	/* cycles counts for taken jr/jp/call and interrupt latency (rst opcodes) */
};

extern int z80_ICount;              /* T-state count                        */

#define Z80_IGNORE_INT  -1          /* Ignore interrupt                     */
#define Z80_NMI_INT 	-2			/* Execute NMI							*/
#define Z80_IRQ_INT 	-1000		/* Execute IRQ							*/

extern void z80_reset (void *param);
extern void z80_exit (void);
extern void z80_end_timeslice(void);
extern int z80_execute(int cycles);
extern void z80_burn(int cycles);
extern unsigned z80_get_context (void *dst);
extern void z80_set_context (void *src);
extern void *z80_get_cycle_table (int which);
extern void z80_set_cycle_table (int which, void *new_tbl);
extern unsigned z80_get_pc (void);
extern void z80_set_pc (unsigned val);
extern unsigned z80_get_sp (void);
extern void z80_set_sp (unsigned val);
extern unsigned z80_get_reg (int regnum);
extern void z80_set_reg (int regnum, unsigned val);
extern void z80_set_nmi_line(int state);
extern void z80_set_irq_line(int irqline, int state);
extern void z80_set_irq_callback(int (*irq_callback)(int));
extern void z80_state_save(void *file);
extern void z80_state_load(void *file);
extern const char *z80_info(void *context, int regnum);
extern unsigned z80_dasm(char *buffer, unsigned pc);

#ifdef MAME_DEBUG
extern unsigned DasmZ80(char *buffer, unsigned pc);
#endif

unsigned int cpu_readport16(unsigned int port);
void cpu_writeport16(unsigned int port, unsigned int data);
unsigned int cpu_readmem16(unsigned int address);
void cpu_writemem16(unsigned int address, unsigned int data);

#endif