module decoder(address,En,add);
    
    input En; // Active high enable
    input [7:0]address;
    output reg [255:0]add;
    integer i;
    
    always@(address or En) begin
        //add[256] = 0;
        if (En) begin
            
            for(i=0;i<256;i=i+1) begin
                add[i]=(address==i)?1'b1:1'b0;
            end
            
        end
        else 
            add = 256'b0; 
        
    end

endmodule