Question

Write a test bench and simulate your circuit with the following input values (set n=5 ). Print the simulation results and comment on the results of each test value: [20 marks] All Values below are in decimal → Set A=−8, B=12, Then C1,C0=(0,0),(0,1),(1,0), and (1,1) → Set A=12,B=5, Then Cl,C0=(0,0),(0,1),(1,0), and (1,1)

Answer 1

To write a test bench and simulate a circuit, you'll need a hardware description language (HDL) such as VHDL or Verilog. This example provides a VHDL test bench template and explains how to set input values, simulate the circuit, and print the results. It also mentions the need to repeat the process for different test values.

Step-by-step explanation:

To write a test bench and simulate a circuit, you'll need a hardware description language (HDL) such as VHDL or Verilog. Here's an example test bench using VHDL:

entity my_circuit_tb is
end my_circuit_tb;

architecture behavioral of my_circuit_tb is
component my_circuit
port (
A, B : in integer;
Cl, C0 : out integer
);
end component;
signal A, B, Cl, C0 : integer;
begin
dut : my_circuit
port map (
A => A,
B => B,
Cl => Cl,
C0 => C0
);

A <= -8;
B <= 12;

-- Repeat for each test value
Cl <= 0;
C0 <= 0;
wait for 10 ns;
-- Print simulation result and comment
report "Test 1: Cl = " & integer'image(Cl) & ", C0 = " & integer'image(C0) & ": Comment here";

-- Repeat for other test values

-- End simulation
wait;
end behavioral;