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TO ADD TWO NUMBERS USING VHDL WITH AN EXAMPLE



The structure of an FPGA design written in an HDL such as VHDL or Verilog will depend on the specific requirements of the digital circuit being implemented, but there are some common elements that are typically included.

Here is an example of the basic structure of a VHDL design:


library ieee;
use ieee.std_logic_1164.all;

entity my_circuit is
    port(
        input1 : in std_logic;
        input2 : in std_logic;
        output : out std_logic
    );
end my_circuit;

architecture behavioral of my_circuit is
begin
    -- Combinational logic goes here
    output <= input1 and input2;
end behavioral;
Here is an example of the basic structure of a Verilog design:

module my_circuit (input1, input2, output);
    input input1;
    input input2;
    output output;

    // Combinational logic goes here
    assign output = input1 & input2;
endmodule


Both of these examples define a digital circuit with two inputs (input1 and input2) and one output (output). The specific behavior of the circuit is defined by the combinational logic, which in these examples is a simple AND operation.

The structure of an FPGA design will typically include additional components such as registers, sequential logic, and interconnections, depending on the requirements of the digital circuit being implemented.
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