From 4083fcdeaeaeec543fbda48208dde14405f22f8f Mon Sep 17 00:00:00 2001
From: Palmer Dabbelt
Date: Sun, 6 Mar 2016 00:03:08 -0800
Subject: Print a better message on constant width failures

I'm getting this error and the message is awful.
---
 src/main/scala/Chisel/internal/firrtl/IR.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/scala/Chisel/internal/firrtl/IR.scala b/src/main/scala/Chisel/internal/firrtl/IR.scala
index 60a38a08..d53807c6 100644
--- a/src/main/scala/Chisel/internal/firrtl/IR.scala
+++ b/src/main/scala/Chisel/internal/firrtl/IR.scala
@@ -57,7 +57,7 @@ abstract class LitArg(val num: BigInt, widthArg: Width) extends Arg {
 
   protected def minWidth: Int
   if (forcedWidth) {
-    require(widthArg.get >= minWidth)
+    require(widthArg.get >= minWidth, s"The literal value ${num} was elaborated with a specificed width of ${widthArg.get} bits, but at least ${minWidth} bits are required.")
   }
 }
 
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