Testing LFSR solution

src/main/scala/solutions/LFSR16.scala

 // See LICENSE.txt for license details.
+// January 21st, 2018	- adapting for Learning Journey
 package solutions
 
-import chisel3._
-import chisel3.util.Cat
+import Chisel._
+import Chisel.util.Cat
 
 // Problem:
 //
@@ -11,12 +12,11 @@ import chisel3.util.Cat
 // State change is allowed only when 'inc' is asserted
 //
 class LFSR16 extends Module {
-  val io = IO(new Bundle {
-    val inc = Input(Bool())
-    val out = Output(UInt(16.W))
-  })
-
-  val res = RegInit(1.U(16.W))
+  val io = new Bundle {
+    val inc = Bool(INPUT)
+    val out = UInt(OUTPUT, 16)
+  }
+  val res = Reg(init = UInt(1, 16))
   when (io.inc) { 
     val nxt_res = Cat(res(0)^res(2)^res(3)^res(5), res(15,1)) 
     res := nxt_res