print hex-code in string

Question

I hope "*ielm*"/eval-print-last-sexp print "\x80", but the result is

ELISP> "\x80"
"\200"  ; Unicode characters should be displayed normally.

My current settings:

(setq print-escape-newlines t
      print-escape-control-characters nil
      ctl-arrow t
      print-escape-multibyte nil
      display-raw-bytes-as-hex t)