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-   -   sensitivity list confusion (http://www.velocityreviews.com/forums/t371843-sensitivity-list-confusion.html)

traxx84 09-25-2006 02:16 PM

sensitivity list confusion
 
Hi all....i am student learning the VHDL coding this semester.....recently i found that the process statement with its sensitivity list does not work the way it is said in the text book.....although i never insert a particular signal into the sensitivity list....the output is changes whenever the particular signal changes value...... for example

-- h
library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.std_logic_arith.all;

entity h is
port (
d : out STD_LOGIC;
c : in STD_LOGIC;
a : in STD_LOGIC;
b : in STD_LOGIC
);
end h;

architecture h_arch of h is
begin
process(a)
begin

d<=a and b and c;


end h_arch;


the d value changes each time the value of either b or c changes although i mantain the value of a...

Can anybody help me in this problem???

Thanx!!!!!!!:-):-?

eesuperstar 11-14-2012 02:56 PM

solved?
 
I know this is super old but was this ever solved?


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