I finished the first part and its code below:

architecture Behavioral of alu is

begin process(a,b,s) is

begin

case s is

when "00" => result result result 4. Write the VHDL code for the 1-bit ALU with three functions shown in the Figure: 1-bit ALU Operation Operation 00 and 01 or 10 XOR 1 H r Result 5. Extend the ALU in problem four to 4-bit and writ the VHDL code for it