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/* some defines for extracting instruction bit fields from bytes */

#define REG(a)	  (((a)>>3)&7)

#define SCALE(a)  (((a)>>6)&3)

#define BASE(a)   ((a)&7)

typedef union{

    unsigned short ofs;

  }w;

/* prototypes */

unsigned char getbyte(void);

int sib();

void uputchar(char );

void outhex(char , int , int , int , int );

void do_sib(int );

void floating_point(int );