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#define DEBUG

#define H8500_MSIZE (8*64*1024)

#define CSIZE 1000

union rtype

    {

      unsigned long l;

      unsigned short s[2];

      unsigned char *c;

    };

/* Local register names */

typedef enum

{

  R0, R1, R2, R3, R4, R5, R6, R7,

  R_SR,                         /* 8 */

  R_PC,                         /* 9 */

  R_BR,                         /* 10 */

  R_BP,                         /* 11 */

  R_CP,                         /* 14 */

  R_DP,                         /* 13 */

  R_EP,                         /* 12 */

  R_TP,                         /* 15 */

  R_HARD_0,                     /* 16 */

  R_HARD8_0,                    /* 17 */

  R_LAST,

} reg_type;

typedef struct

{

  fastref type;

  union

    {

      int code;

      unsigned char *bptr;

      unsigned short *wptr;

      unsigned long *lptr;

      unsigned char **segptr;

      union rtype *rptr;

    }

  reg;

  int literal;

  union

    {

      unsigned char **segreg;

      unsigned short *wptr;

      union rtype *rptr;

    }

  r2;

}

ea_type;

typedef struct

{

  ea_type srca;

  ea_type srcb;

  ea_type dst;

  fastref opcode;

  fastref flags;

  int next_pc;

  int oldpc;

  int cycles;

#ifdef DEBUG

  h8500_opcode_info *op;

#endif

}

decoded_inst;

typedef struct

{

  int exception;

  union rtype   regs[20];

  unsigned char *memory;

  unsigned short *cache_idx;

  int cache_top;

  int maximum;

  int csize;

  decoded_inst *cache;

  int cycles;

  int insts;

  int ticks;

  int compiles;

}

cpu_state_type;