Home > VHDL > Logic Circuits > 4 2 Priority Encoders
Priority Encoders using If-Then-Else Statement :
If-then-else statement is mainly used to for sequential statements based on a value. The condition of the if-then-else statement is checked in order against that value until a true condition is found. Figure belo shows the Priority Encoder using If-Then-Else Statement.
library IEEE;
use IEEE.std_logic_1164.all;
entity my_if is
port (c, d, e, f : in std_logic;
s : in std_logic_vector(1 downto 0);
pout : out std_logic);
end my_if;
architecture my_arc of my_if is
begin
myif_pro: process (s, c, d, e, f) begin
if s = "00" then
pout <= c;
elsif s = "01" then
pout <= d;
elsif s = "10" then
pout <= e;
else pout <= f;
end if ;
end process myif_pro;
end my_arc;