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70. Universal Barrel Shifter

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Solving Approach

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Code

/*Write your code here*/
module univ_barrel8 (
    input  [7:0] x,
    input  [2:0] sh,    
    input  [2:0] mode,  
    output reg [7:0] y
);
    // mode encodings
    
    always @* begin
        case (mode)
            1 : y = (x << sh);
            2 : y = (x >> sh);                               
            3 : y = $signed(x) >>> sh;                       
            4 : y = ((x << sh) | (x >> (8 - sh)));  
            5 : y = ((x >> sh) | (x << (8 - sh)));   
            default: y = x;                                      
        endcase
    end
endmodule

 

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