diff --git a/src/main/scala/backBoard/ebus/CDROut.scala b/src/main/scala/backBoard/ebus/CDROut.scala
index bf87a7f..ec4d57c 100644
--- a/src/main/scala/backBoard/ebus/CDROut.scala
+++ b/src/main/scala/backBoard/ebus/CDROut.scala
@@ -28,8 +28,8 @@ class CDROut extends Module{
   def STATE_FCS = 3.U
 
 
-  val ETH_PRE = "h55".U
-  val ETH_SFD = "hD5".U
+  val ETH_PRE = "h55".U(8.W)
+  val ETH_SFD = "hD5".U(8.W)
 
   val stateNext = Wire(UInt(2.W))
   val stateCurr = RegNext( stateNext, 0.U )
diff --git a/src/main/scala/backBoard/ebus/b4b5.scala b/src/main/scala/backBoard/ebus/b4b5.scala
index 6ede6a2..561dd68 100644
--- a/src/main/scala/backBoard/ebus/b4b5.scala
+++ b/src/main/scala/backBoard/ebus/b4b5.scala
@@ -52,14 +52,14 @@ object b4b5Decoder{
 
 object Dualb4b5Encoder{
   def apply( enq: UInt ): UInt = {
-    require( enq.getWidth == 8 )
+    require( enq.getWidth == 8, "Require Failed @ Dualb4b5Encoder!" )
     Cat( b4b5Encoder(enq(7,4)),  b4b5Encoder(enq(3,0)) )
   }
 }
 
 object Dualb4b5Decoder{
   def apply( enq: UInt ): UInt = {
-    require( enq.getWidth == 10 )
+    require( enq.getWidth == 10, "Require Failed @ Dualb4b5Decoder!" )
     Cat( b4b5Decoder(enq(9,5)),  b4b5Decoder(enq(5,0)) )
   }
 }