Hi everyone,

This is my second post about Vhdl programming on Quartus II and Modelsim. I was searching how to converting a hex number to the bcd (binary coded decimal). Finally i found from web and learned.

As you see will see from the program, we define 8 bit long vector. And program converts a given hex number to bcd. I made two examples and showed at Modelsim.

library ieee;
use ieee.std_logic_1164.ALL;
use ieee.std_logic_arith.ALL;

entity gokhan IS
port(
D : OUT STD_LOGIC_VECTOR(7 DOWNTO 0));
end gokhan;

architecture behavior OF gokhan is

begin
D <= x"8A";

end behavior;
--ozturkgokhan.com

Expected value of FC hex

Simulation result of output FC hex

Expected value of 8A hex

Simulation result of output 8A Hex

Have a nice day,
Gökhan Öztürk