STORE     RP, R1 or immediate, dt_flags, d_size
          RP, R1 or immediate, dt_flags, d_size, d_sign-1
          RP, R1 or immediate, dt_flags, d_size, d_sign-1, write_through-1
          RP, R1 or immediate, dt_flags, d_size, d_sign-1, write_through-1, p_immediate

