Perl, 33 bytes
==============
Includes +5 for `-F//` (cannot be combined with `-e` and the code has `'` too, so space and `-` are counted too).

Run with the input on STDIN or give one or more filenames as argument

    perl -M5.010 asciidump.pl <<< "Hoi"

`asciidump.pl`

    #!/usr/bin/perl -F//
    $"=v9;say"@F@{[unpack'W*']}"

Output is not aesthetic if the text contains a tab or there is no final newline