From 7f71df09255c1ba046875e3c0586d14c521e1b88 Mon Sep 17 00:00:00 2001
From: "Wesley W. Terpstra" <wesley@sifive.com>
Date: Tue, 14 Mar 2017 10:28:52 -0700
Subject: [PATCH] apb: better test coverage

---
 src/main/scala/uncore/apb/Test.scala | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/scala/uncore/apb/Test.scala b/src/main/scala/uncore/apb/Test.scala
index e59c5820..c6d6f56e 100644
--- a/src/main/scala/uncore/apb/Test.scala
+++ b/src/main/scala/uncore/apb/Test.scala
@@ -25,9 +25,14 @@ class APBFuzzBridge()(implicit p: Parameters) extends LazyModule
   val gpio  = LazyModule(new RRTest0(0x100))
 
   model.node := fuzz.node
-  xbar.node := TLToAPB()(TLDelayer(0.1)(model.node))
   ram.node  := xbar.node
   gpio.node := xbar.node
+  xbar.node :=
+    TLToAPB()(
+    TLDelayer(0.2)(
+    TLBuffer(TLBufferParams.flow)(
+    TLDelayer(0.2)(
+    model.node))))
 
   lazy val module = new LazyModuleImp(this) with HasUnitTestIO {
     io.finished := fuzz.module.io.finished