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(Solved): Use Verilog HDL code Coding Exercise 1: Design a 4-bit Adder/Subtractor like the figure seen below. ...



Use Verilog HDL codeCoding Exercise 1: Design a 4-bit Adder/Subtractor like the figure seen below. You are to design the adders using user-define

Coding Exercise 1: Design a 4-bit Adder/Subtractor like the figure seen below. You are to design the adders using user-defined primitives while the rest of the components are using the structural modeling. The \( S \) input switches between the adder and subtractor; if \( S=1 \), then the circuit is a subtractor else it will function as an adder. Figure \( 6.13 \) shows a diagram of the 4-bit Adder/Subtractor circuit.:


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Code: module four_bit_adder_subtractor(a,b,M,S,C); input [3:0]a,b; input M; output reg [3:0]S; output reg C; wire C1,C2,C3,C4; wire [3:0]
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