From b954eccd7eea0064051de920577da11444b7f45a Mon Sep 17 00:00:00 2001
From: Aaron Giles <aaron@aarongiles.com>
Date: Sat, 4 Sep 2010 20:38:52 +0000
Subject: [PATCH] Last 2 regressions.

---
 src/mame/includes/metro.h    | 4 ++--
 src/mame/includes/mitchell.h | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/mame/includes/metro.h b/src/mame/includes/metro.h
index fbea40970ff..eee69a17f72 100644
--- a/src/mame/includes/metro.h
+++ b/src/mame/includes/metro.h
@@ -81,9 +81,9 @@ public:
 
 	/* devices */
 	required_device<cpu_device> maincpu;
-	required_device<cpu_device> audiocpu;
+	optional_device<cpu_device> audiocpu;
 	optional_device<okim6295_device> oki;
-	required_device<device_t> ymsnd;
+	optional_device<device_t> ymsnd;
 	optional_device<k053936_device> k053936;
 };
 
diff --git a/src/mame/includes/mitchell.h b/src/mame/includes/mitchell.h
index b77efcc8931..3edda2e41d3 100644
--- a/src/mame/includes/mitchell.h
+++ b/src/mame/includes/mitchell.h
@@ -38,7 +38,7 @@ public:
 
 	/* devices */
 	optional_device<cpu_device> audiocpu;
-	required_device<okim6295_device> oki;
+	optional_device<okim6295_device> oki;
 };