Subversion Repositories de1_olpcl2294_system

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

//

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

`include "timescale.v"

module

  hex_led_encoder(

                    output  [6:0] encoder,

                    input   [3:0] nibble

                  );

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

  // hex encoder

  reg [6:0] hex_led_encoder_r;

  always @(*)

    case( nibble )

      4'b0000:  hex_led_encoder_r = 7'h3f;

      4'b0001:  hex_led_encoder_r = 7'h06;

      4'b0010:  hex_led_encoder_r = 7'h5b;

      4'b0011:  hex_led_encoder_r = 7'h4f;

      4'b0100:  hex_led_encoder_r = 7'h66;

      4'b0101:  hex_led_encoder_r = 7'h6d;

      4'b0110:  hex_led_encoder_r = 7'h7d;

      4'b0111:  hex_led_encoder_r = 7'h07;

      4'b1000:  hex_led_encoder_r = 7'h7f;

      4'b1001:  hex_led_encoder_r = 7'h6f;

      4'b1010:  hex_led_encoder_r = 7'h77;

      4'b1011:  hex_led_encoder_r = 7'h7c;

      4'b1100:  hex_led_encoder_r = 7'h39;

      4'b1101:  hex_led_encoder_r = 7'h5e;

      4'b1110:  hex_led_encoder_r = 7'h79;

      4'b1111:  hex_led_encoder_r = 7'h71;

      default:  hex_led_encoder_r = 7'h7f;

    endcase

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

  // outputs

  assign encoder = ~hex_led_encoder_r;

endmodule