修改 2x1 MUX 成為8組 2x1 MUX 並送至2個7段顯示器上顯示結果 並下載到DE2-70 板子

修改 2x1 MUX 成為8組 2x1 MUX
並送至2個7段顯示器上顯示結果

 並下載到DE2-70 板子 

¡Input x  SW[0-7]

¡Input y  SW[8-15]

¡Input SW17 select X or Y

¡Output LEDG0-7

module mux8_2x1disp (SW,LEDR,LEDG,HEX0,HEX1,HEX2,HEX3,HEX4,HEX5,HEX6,HEX7);

input [17:0] SW;

output [17:0] LEDR;

output [7:0] LEDG;

output [6:0] HEX0,HEX1,HEX2,HEX3,HEX4,HEX5,HEX6,HEX7;

assign HEX2=7'b111_1111;  //off 7-segment Display

assign HEX3=7'b111_1111; 

assign HEX4=7'b111_1111;

assign HEX5=7'b111_1111;

assign HEX6=7'b111_1111;

assign HEX7=7'b111_1111;

wire [7:0]T1;

 mux8_2x1 c0 (SW[16],SW[7:0],SW[15:8],T1);

 assign LEDR[7:0] = T1;

 hex_7seg c1(T1[3:0],HEX0);

hex_7seg c2(T1[7:4],HEX1);

endmodule

//===============================

module mux8_2x1(sel,a,b,z);

parameter WIDTH=8;

input [WIDTH-1:0] a,b;

output [WIDTH-1:0]z;

input sel;

assign z = sel ? a : b;

endmodule

//===============================

module hex_7seg (hex,seg_out);

  input [3:0] hex;

  output reg [6:0] seg_out;

always@ (hex)

begin

  case (hex)

    //                     gfe_dcba 7-segment

    4'b0000 : seg_out  = 7'b100_0000;

    4'b0001 : seg_out  = 7'b111_1001;

    4'b0010 : seg_out  = 7'b010_0100;

    4'b0011 : seg_out  = 7'b011_0000;

    4'b0100 : seg_out  = 7'b001_1001;

    4'b0101 : seg_out  = 7'b001_0010;

    4'b0110 : seg_out  = 7'b000_0010;

    4'b0111 : seg_out  = 7'b111_1000;

    4'b1000 : seg_out  = 7'b000_0000;

    4'b1001 : seg_out  = 7'b001_0000;

    4'b1010 : seg_out  = 7'b000_1000;

    4'b1011 : seg_out  = 7'b000_0011;

    4'b1100 : seg_out  = 7'b100_0110;

    4'b1101 : seg_out  = 7'b010_0001;

    4'b1110 : seg_out  = 7'b000_0110;

    default : seg_out  = 7'b000_1110;

    endcase

  end

 

endmodule

//===============================

/*

4'b0001 : seg = 8'b11111001;   //1 = F9H
       4'b0010 : seg = 8'b10100100;   //2 = A4H
       4'b0011 : seg = 8'b10110000;   //3 = B0H
       4'b0100 : seg = 8'b10011001;   //4 = 99H
       4'b0101 : seg = 8'b10010010;   //5 = 92H
       4'b0110 : seg = 8'b10000010;   //6 = 82H
       4'b0111 : seg = 8'b11111000;   //7 = F8H
       4'b1000 : seg = 8'b10000000;   //8 = 80H
       4'b1001 : seg = 8'b10010000;   //9 = 90H
       4'b1010 : seg = 8'b10001000;   //A = 88H
       4'b1011 : seg = 8'b10000011;   //b = 83H
       4'b1100 : seg = 8'b11000110;   //C = C6H
       4'b1101 : seg = 8'b10100001;   //d = A1H
       4'b1110 : seg = 8'b10000110;   //E = 86H
       4'b1111 : seg = 8'b10001110;   //F = 8EH
       default : seg = 8'b11000000;   //0 = C0H    */