Re: Pattern Matching

 0 0 0 0 0    0
 1 0 0 0 1    1
 2 0 0 1 0    1
 3 0 0 1 1    0
 4 0 1 0 0    0
 5 0 1 0 1    0
 6 0 1 1 0    1
 7 0 1 1 1    0
 8 1 0 0 0    1
 9 1 0 0 1    0
10 1 0 1 0    0
11 1 0 1 1    1
12 1 1 0 0    0
13 1 1 0 1    1
14 1 1 1 0    1
15 1 1 1 1    1

 1 0 0 0 1    1
 2 0 0 1 0    1
 6 0 1 1 0    1
 8 1 0 0 0    1
11 1 0 1 1    1
13 1 1 0 1    1
14 1 1 1 0    1
15 1 1 1 1    1


Gruppe 1:
 1 0 0 0 1    1
 2 0 0 1 0    1
 8 1 0 0 0    1
Gruppe 2:
 6 0 1 1 0    1
Gruppe 3:
11 1 0 1 1    1
13 1 1 0 1    1
14 1 1 1 0    1
Gruppe 4:
15 1 1 1 1    1


Gruppe 1:
 1 0 0 0 1    1
 2 0 0 1 0    1
 8 1 0 0 0    1
Gruppe 2:
 6 0 1 1 0    1
Gruppe 3:
11 1 0 1 1    1
13 1 1 0 1    1
14 1 1 1 0    1
Gruppe 4:
15 1 1 1 1    1

1   0 0 0 1
8   1 0 0 0

2:6     0 - 1 0
6:14    - 1 1 0
11:15   1 - 1 1
13:15   1 1 - 1
14:15   1 1 1 -

6:14    - 1 1 0
2:6     0 - 1 0
11:15   1 - 1 1
13:15   1 1 - 1
14:15   1 1 1 -

y <= (x2 and x1 and not x0) or
        (not x3 and x1 and not x0) or
        (x3 and x1 and x0) or
        (x3 and x2 and x0) or
        (x3 and x2 and x1)

entity meinschaltnetz is
port
(
    x3, x2, x1, x0: in bit;
    y: out bit
);
end;

architecture verhalten of meinschaltnetz is
begin
    y <= (x2 and x1 and not x0) or
        (not x3 and x1 and not x0) or
        (x3 and x1 and x0) or
        (x3 and x2 and x0) or
        (x3 and x2 and x1)
end;