P5-22 Low active 3-8 decoder usign bitwise operators

//P5-22 Low active 3-8 decoder usign bitwise operators

//For DE2-70 Boards

module Decoder3x8 (SW, LEDR, LEDG);

input [17:0] SW; // toggle switches

output [17:0] LEDR; // red  LEDS   

  output [7:0] LEDG; // green LEDs

  

//set original program input , output 

wire [2:0]d;

wire [7:0]y;

   

    //mapping to hardware 

    assign LEDR = SW;

    assign d=SW[2:0];

    

//compute the outputs with b

assign y[0] = ~((~d[2]) & (~d[1]) & (~d[0])),

            y[1] = ~((~d[2]) & (~d[1]) & (d[0])),

            y[2] = ~((~d[2]) & (d[1]) & (~d[0])),

            y[3] = ~((~d[2]) & (d[1]) & (d[0])),

            y[4] = ~((d[2]) & (~d[1]) & (~d[0])),

            y[5] = ~((d[2]) & (~d[1]) & (d[0])),

            y[6] = ~((d[2]) & (d[1]) & (~d[0])),

            y[7] = ~((d[2]) & (d[1]) & (d[0]));

//assign output hardware

assign LEDG=y;

endmodule

/*

//Filename : decod3_8.v

//----------------------------------------------

module decod3_8(y, d);

output [7:0] y;

input [2:0] d;

 //compute the outputs with b

 assign y[0] = ~((~d[2]) & (~d[1]) & (~d[0])),

            y[1] = ~((~d[2]) & (~d[1]) & (d[0])),

            y[2] = ~((~d[2]) & (d[1]) & (~d[0])),

            y[3] = ~((~d[2]) & (d[1]) & (d[0])),

            y[4] = ~((d[2]) & (~d[1]) & (~d[0])),

            y[5] = ~((d[2]) & (~d[1]) & (d[0])),

            y[6] = ~((d[2]) & (d[1]) & (~d[0])),

            y[7] = ~((d[2]) & (d[1]) & (d[0]));

endmodule

*/