Vonfuck

Vonfuck is a brainfuck deriviative by User:TheCatFromGithub in 2026. It is just like brainfuck, but the program is stored in the same memory of the data. Instructions are stored mod 8.

Instruction	Value (mod 8)
+	0
-	1
>	2
<	3
.	4
,	5
[	6
]	7

So, for example, the start of the data memory with +[.+] would be:

[0,6,4,0,7]

After the first instruction, this would become:

[1,6,4,0,7]

As you can see, the program can be modified as freely as the data.