+(* lettura da X+[word curpc] *)
+definition mode_IX2ADD_load ≝
+λm:mcu_type.λt:memory_impl.λs:any_status m t.λcur_pc:word16.
+ opt_map ?? (memory_filter_read m t s cur_pc)
+ (λbh.opt_map ?? (memory_filter_read m t s (filtered_inc_w16 m t s cur_pc))
+ (λbl.opt_map ?? (get_IX m t s)
+ (λaddr.Some ? (tripleT ??? s (plus_w16nc addr 〈bh:bl〉) (filtered_plus_w16 m t s cur_pc 2))))).
+