z80.h

这个是延伸mame的在wince平台下的游戏模拟器的代码

#ifndef Z80_H
#define Z80_H

#include "osd_cpu.h"
#include "cpuintrf.h"
#include "DrZ80.h"

/****************************************************************************/
/* The Z80 registers. HALT is set to 1 when the CPU is halted, the refresh  */
/* register is calculated as follows: refresh=(Regs.R&127)|(Regs.R2&128)    */
/****************************************************************************/
typedef struct {
	struct DrZ80 regs;
	int pending_irq;
	int irq_max; /* number of daisy chain devices */
	int request_irq; /* daisy chain next request device */
	int service_irq; /* daisy chain next reti handling device */
	int int_state[Z80_MAXDAISY];
	Z80_DaisyChain irq[Z80_MAXDAISY];
}   Z80_Regs;

/*extern int Z80_ICount; // T-state count */
extern Z80_Regs Z80;
#define Z80_ICount (Z80.regs.cycles)

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

extern unsigned Z80_GetPC (void); /* Get program counter */
extern int Z80_GetPreviousPC (void);
extern void Z80_GetRegs (Z80_Regs *Regs);  /* Get registers */
extern void Z80_SetRegs (Z80_Regs *Regs);  /* Set registers */
extern void Z80_Reset (Z80_DaisyChain *daisy_chain);
extern int Z80_Execute(int cycles); /* Execute cycles T-States - returns number of cycles actually run */
extern int Z80_Interrupt(void);
extern void Z80_Cause_Interrupt(int type);
extern void Z80_Clear_Pending_Interrupts(void);
extern void Interrupt(void); /* required for DrZ80 int hack */

#endif