Hallo,
ich versuche ueber 2x 4 Schalter 2 Zahlen zu multiplizieren und mittels
LEDs das Ergbnis anzeigen zu lassen... jedoch bekomme ich jedesmal den
fehler:
Type of z is incompatible with type of *.
Weiss einer von euch wieso?
Vielen Dank im voraus.
Hier der Code:
1 | library IEEE;
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2 | use IEEE.STD_LOGIC_1164.ALL;
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3 | use IEEE.NUMERIC_STD.ALL;
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4 |
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5 |
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6 | entity multi is
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7 | Port (
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8 | sw: in STD_LOGIC_VECTOR(3 downto 0); --Switches (SW7 - SW4)
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9 | sw2: in STD_LOGIC_VECTOR(3 downto 0); --Switches (SW4 - SW1)
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10 | LED : out STD_LOGIC_VECTOR(7 downto 0);
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11 | );
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12 | end multi;
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13 |
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14 |
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15 | architecture Behavioral of multi is
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16 |
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17 | signal x: unsigned(3 downto 0);
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18 | signal y: unsigned(3 downto 0);
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19 | signal z: signed(7 downto 0);
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20 |
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21 |
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22 | begin
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23 |
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24 | x <= unsigned(sw);
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25 | y <= unsigned(sw2);
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26 |
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27 | z <= y * x;
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28 |
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29 | LED <= std_logic_vector(z);
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30 |
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31 | end Behavioral;
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