From c72b15f2a09c55845425dcf63248adb62e38c1ba Mon Sep 17 00:00:00 2001
From: Megan Wachs <megan@sifive.com>
Date: Fri, 21 Apr 2017 14:49:48 -0700
Subject: [PATCH] Down with any require() statement that makes me RTFC

---
 src/main/scala/rocket/Tile.scala | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/scala/rocket/Tile.scala b/src/main/scala/rocket/Tile.scala
index eef8f5a1..97f8357f 100644
--- a/src/main/scala/rocket/Tile.scala
+++ b/src/main/scala/rocket/Tile.scala
@@ -124,7 +124,8 @@ class RocketTileModule(outer: RocketTile) extends BaseTileModule(outer, () => ne
     with CanHaveLegacyRoccsModule
     with CanHaveScratchpadModule {
 
-  require(outer.p(PAddrBits) >= outer.masterNode.edgesIn(0).bundle.addressBits)
+  require(outer.p(PAddrBits) >= outer.masterNode.edgesIn(0).bundle.addressBits,
+    s"outer.p(PAddrBits) (${outer.p(PAddrBits)}) must be >= outer.masterNode.addressBits (${outer.masterNode.edgesIn(0).bundle.addressBits})")
 
   val core = Module(p(BuildCore)(outer.p))
   decodeCoreInterrupts(core.io.interrupts) // Decode the interrupt vector