51. Opcode Decoder

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Solving Approach

How do you plan to solve it?

Code

module alu_decoder (
    input  [1:0] opcode,
    output reg [3:0] alu_op
);
    always @* begin
        case (opcode)
           2'b00: alu_op=4'b0001;
           2'b01: alu_op=4'b0010;
           2'b10 : alu_op=4'b0100;
           2'b11: alu_op=4'b1000;
           default : alu_op = 4'b0; 
        endcase
    end
endmodule

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