I have created an advanced version of the simple substitution cipher.
It can now use chars in range from 0-255, but that should not stop you.
The ciphertext is in the language of this text, and uses correct punctuation and case-sensitivity.

C1 F9 E2 02 C9 80 76 7D 01 80 76 3B F9 E2 92 22
9F EF CC 3B 92 9F F9 E2 32 9F BF 80 92 9F CC 80
C9 B2 32 C9 42 9F 7A 7D 76 9F 74 F9 7D 9F 02 F9
76 9F 3B 76 22 9F 2D 32 C9 74 9F BF 32 01 01 9F
B2 F9 E2 32 9F 44 32 01 01 F9 BF 9F CC 80 13 6E
32 C9 22 9F EF CC 32 9F 9E C9 F9 7A 01 32 DB 9F
BF 3B 76 CC 9F 76 CC 3B 92 9F 13 3B 9E CC 32 C9
9F 3B 92 9F 76 CC 80 76 9F 76 CC 32 9F 6E 32 74
9F 3B 92 9F 9E C9 32 76 76 74 9F 01 F9 E2 02 22
9F B7 9F BF 3B 01 01 9F 13 F9 DB 32 9F 7D 9E 9F
BF 3B 76 CC 9F 80 9F 7A 32 76 76 32 C9 9F 32 E2
13 C9 74 9E 76 3B F9 E2 9F 92 CC 32 DB 32 9F 80
E2 74 9F 92 F9 F9 E2 22 9F 49 F9 7D C9 9F 92 F9
01 7D 76 3B F9 E2 9F 3B 92 11 9F 80 9E B2 01 C9
32 C9 3B 80 E2 CC CC 22