From a6f22d467f2bc7d83e1dc94da3a7f354c4dc9d7d Mon Sep 17 00:00:00 2001
From: Andrew Waterman
Date: Fri, 2 Nov 2018 14:49:53 -0700
Subject: Fix Queue.io.count when entries=1 (#918)

Resolves #917---
 src/main/scala/chisel3/util/Decoupled.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/scala/chisel3/util/Decoupled.scala b/src/main/scala/chisel3/util/Decoupled.scala
index 88ccd892..d2a6552d 100644
--- a/src/main/scala/chisel3/util/Decoupled.scala
+++ b/src/main/scala/chisel3/util/Decoupled.scala
@@ -253,7 +253,7 @@ class Queue[T <: Data](gen: T,
 
   private val ptr_diff = enq_ptr.value - deq_ptr.value
   if (isPow2(entries)) {
-    io.count := Cat(maybe_full && ptr_match, ptr_diff)
+    io.count := Mux(maybe_full && ptr_match, entries.U, 0.U) | ptr_diff
   } else {
     io.count := Mux(ptr_match,
                     Mux(maybe_full,
-- 
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