add bytePerWord

Author: yaqiz01

src/param/DesignParam.scala

@@ -3,12 +3,13 @@ package param
 
 import SpadeConfig._
 case class DesignParam(
-  wordWidth:Int = option[Int]("word"),
+  wordWidth:Int = option[Int]("word"), // bit
   vecWidth:Int = option[Int]("vec"),
   clockFrequency:Int = 1000000000, //Hz
   burstSize:Int = 512, // bit
   topParam:TopParam = defaultTopParam
 ) extends Parameter {
   def burstSizeWord = burstSize / wordWidth
   def burstSizeByte = burstSize / 8 
+  def bytePerWord = designParam.wordWidth / 8
 }