+ type byte_file_type is file of hbyte;
+ subtype my_string is string(1 to 720);
+ signal sys_clk : std_logic;
+ signal sys_res_n : std_logic;
+ signal btn_a : std_logic;
+ signal tx_new : std_logic;
+ signal tx_done : std_logic;
+ signal rx_new : std_logic;
+ signal pc_get : std_logic;
+ signal pc_done : std_logic;
+ signal rx_data, tx_data : std_logic_vector(7 downto 0);
+
+ signal pc_zeile : hzeile;
+ signal pc_spalte : hspalte;
+ signal pc_char : hbyte;