extern void save_for_pass_two(UBYTE *);
extern void calc_instruction_length(UBYTE * * , INSTRUCTION * );
extern void extract_opcode(UBYTE * *, UWORD *);

extern UBYTE check_for_opcode(UBYTE *, UWORD *);
extern UBYTE check_for_pseudo_op(UBYTE * * , INSTRUCTION *, SYMTAB * );
extern UBYTE check_for_symbol(UBYTE * *, UBYTE *);
extern UBYTE get_next_symbol(UBYTE * *);
extern UBYTE check_for_comment(UBYTE *);
extern UBYTE get_reg_num(UBYTE * *, UWORD);
extern UBYTE openfiles(UBYTE *, UBYTE *);

extern UWORD assemble(void);
extern UWORD passone(void);
extern UWORD passtwo(void);
extern UWORD search_symtab(UBYTE * );
extern UWORD write_object_file(void);