STOREPTR  RP, R1
          RP, R1, addr_type
          RP, R1, addr_type, d_size
          RP, R1, addr_type, d_size, p_p_inc_dec-3
          RP, R1, addr_type, d_size, p_p_inc_dec-3, write_through-1
          RP, R1, addr_type, d_size, p_p_inc_dec-3, write_through-1, R2 or p_immediate
          RP, R1, addr_type, d_size, p_p_inc_dec-3, write_through-1, R2 or p_immediate, R3 or shift_immediate


