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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;
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