Adapted example FullAdder

// See LICENSE.txt for license details.

// January 20th, 2018	-adapted to Learning Journey

package examples

import chisel3._

import Chisel._

class FullAdder extends Module { 

  val io = IO(new Bundle {

    val a    = Input(UInt(1.W))

    val b    = Input(UInt(1.W))

    val cin  = Input(UInt(1.W))

    val sum  = Output(UInt(1.W))

    val cout = Output(UInt(1.W))

  })

  val io = new Bundle { 

    val a    = UInt(INPUT, 1) 

    val b    = UInt(INPUT, 1) 

    val cin  = UInt(INPUT, 1) 

    val sum  = UInt(OUTPUT, 1) 

    val cout = UInt(OUTPUT, 1) 

  } 

  // Generate the sum 

  val a_xor_b = io.a ^ io.b 

  io.sum := a_xor_b ^ io.cin