The article is written in VHDL
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
use std.textio.all;

entity hello_world is
end hello_world;

architecture behavior of hello_world is
begin
	process
    begin
       write (output, String'("Hello world!"));
       wait;
    end process;
end behavior;