Nächste Seite: ./vhdl20250304/quine20250218.vhdl Aufwärts: pics Vorherige Seite: quine20250218.png
(C) David Vajda
Tue Feb 18 09:33:06 2025
3 Network - TTL - Disjunktive Normalform
x2 x1 x0 y
0 0 0 0 0
1 0 0 1 1
2 0 1 0 0
3 0 1 1 0
4 1 0 0 1
5 1 0 1 1
6 1 1 0 0
7 1 1 1 1
x2 x1 x0 y
1 0 0 1 1
4 1 0 0 1
5 1 0 1 1
7 1 1 1 1
x2 x1 x0 y
1 0 0 1 1
4 1 0 0 1
5 1 0 1 1
7 1 1 1 1
x2 x1 x0 y
1 0 0 1 1
4 1 0 0 1
5 1 0 1 1
7 1 1 1 1
1:4 - 0 1
4:5 1 0 -
5:7 1 - 1
1 4 5 7
1:5 + +
4:5 + +
5:7 + +
1:4 - 0 1
4:5 1 0 -
5:7 1 - 1
y <= (not x1 and x0) or
(x2 and not x1) or
(x2 and x0);
-- (C) David Vajda
-- Tue Feb 18 09:33:06 2025
-- 3 Network - TTL - Disjunktive Normalform
library ieee;
use ieee.std_logic_1164.all;
entity quine20250218 is
port (
x2, x1, x0: in std_logic;
y: out std_logic
);
end;
architecture behaviour of quine20250218 is
begin
y <= (not x1 and x0) or
(x2 and not x1) or
(x2 and x0);
end;
library ieee;
use ieee.std_logic_1164.all;
entity quine20250218testbench is
port (
y: out std_logic
);
end;
architecture behaviour of quine20250218testbench is
component quine20250218
port (
x2, x1, x0: in std_logic;
y: out std_logic
);
end component;
signal x2, x1, x0: std_logic;
begin
q: quine20250218 PORT MAP (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;
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;
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;
end;
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