sir,
I have generated VHDL code for the two input XOR gate. Below is the test bench code of the xor gate. I have also attached the figure of waveform.It is showing Unknown value U for clk and output O.
test bench file-
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use work.components_pnml.all;
use work.definitions_pnml.all;
entity tb_pNML_custom_XORNEW is
end tb_pNML_custom_XORNEW;
architecture Behavioural of tb_pNML_custom_XORNEW is
signal CLK : std_logic;
signal O :std_logic;
signal O_param : param_data := (others => 0.0);
signal X :std_logic;
signal X_param : param_data := (others => 0.0);
signal Y :std_logic;
signal Y_param : param_data := (others => 0.0);
component pNML_custom_XORNEW is
port(
O: out std_logic;
O_param: out param_data := (others => 0.0);
X: in std_logic;
X_param: in param_data := (others => 0.0);
Y: in std_logic;
Y_param: in param_data := (others => 0.0);
CLK: in std_logic);
end component;
begin
DUT : pNML_custom_XORNEW port map(O => O, O_param => O_param,
X => X, X_param => X_param,
Y => Y, Y_param => Y_param,
CLK => CLK);
clock_proc:process
begin
CLK<='1';
wait for t_clock * 1 sec;
CLK<='0';
wait for t_clock * 1 sec;
end process clock_proc;
clk <= not clk after 10 ns;
input_proc: process
begin
--insert your input stimuli here
X<='0';
wait for t_clock * 1 sec;
Y<='1';
wait for t_clock * 1 sec;
end process input_proc;
end Behavioural;
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This reply was modified 8 years, 2 months ago by
. Reason: please use the code tag when posting vhdl code
