From 177ccbb663c66197c7b44e97207ebf90bfcef07a Mon Sep 17 00:00:00 2001
From: Megan Wachs <megan@sifive.com>
Date: Mon, 10 Jul 2017 21:07:50 -0700
Subject: [PATCH] regfield: More explanatory requires so I don't have to RTFC
 and figure out what width actually was (#855)

---
 src/main/scala/regmapper/RegField.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/scala/regmapper/RegField.scala b/src/main/scala/regmapper/RegField.scala
index b7bfa06d..459d1801 100644
--- a/src/main/scala/regmapper/RegField.scala
+++ b/src/main/scala/regmapper/RegField.scala
@@ -75,7 +75,7 @@ object RegWriteFn
 
 case class RegField(width: Int, read: RegReadFn, write: RegWriteFn, name: String, description: String)
 {
-  require (width > 0)
+  require (width > 0, s"RegField width must be > 0, not $width")
   def pipelined = !read.combinational || !write.combinational
 }