library ieee;
use ieee.std_logic_1164.all;
entity quine20241116 is
port (
x3, x2, x1, x0: in std_logic;
y: out std_logic
);
end;
architecture behaviour of quine20241116 is
begin
y <= not (
(x3 or not x2) and
(x3 or x1 or not x0) and
(x3 or not x1 or x0) and
(not x3 or x2 or not x1 or not x0)
);
end;
library ieee;
use ieee.std_logic_1164.all;
entity quine20241116testbench is
port (
y: out std_logic
);
end;
architecture behaviour of quine20241116testbench is
component quine20241116
port (
x3, x2, x1, x0: in std_logic;
y: out std_logic
);
end component;
signal x3, x2, x1, x0: std_logic;
begin
q: quine20241116 PORT MAP (x3=>x3, x2=>x2, x1=>x1, x0=>x0, y=>y);
x0 <= '0' after 0 ns, '1' after 10 ns, '0' after 20 ns, '1' after 30 ns, '0' after 40 ns, '1' after 50 ns, '0' after 60 ns, '1' after 70 ns, '0' after 80 ns, '1' after 90 ns, '0' after 100 ns, '1' after 110 ns, '0' after 120 ns, '1' after 130 ns, '0' after 140 ns, '1' after 150 ns;
x1 <= '0' after 0 ns, '0' after 10 ns, '1' after 20 ns, '1' after 30 ns, '0' after 40 ns, '0' after 50 ns, '1' after 60 ns, '1' after 70 ns, '0' after 80 ns, '0' after 90 ns, '1' after 100 ns, '1' after 110 ns, '0' after 120 ns, '0' after 130 ns, '1' after 140 ns, '1' after 150 ns;
x2 <= '0' after 0 ns, '0' after 10 ns, '0' after 20 ns, '0' after 30 ns, '1' after 40 ns, '1' after 50 ns, '1' after 60 ns, '1' after 70 ns, '0' after 80 ns, '0' after 90 ns, '0' after 100 ns, '0' after 110 ns, '1' after 120 ns, '1' after 130 ns, '1' after 140 ns, '1' after 150 ns;
x3 <= '0' after 0 ns, '0' after 10 ns, '0' after 20 ns, '0' after 30 ns, '0' after 40 ns, '0' after 50 ns, '0' after 60 ns, '0' after 70 ns, '1' after 80 ns, '1' after 90 ns, '1' after 100 ns, '1' after 110 ns, '1' after 120 ns, '1' after 130 ns, '1' after 140 ns, '1' after 150 ns;
end;
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