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-rw-r--r--src/mame/includes/lockon.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mame/includes/lockon.h b/src/mame/includes/lockon.h
index abdbbe9219c..d21db6256d6 100644
--- a/src/mame/includes/lockon.h
+++ b/src/mame/includes/lockon.h
@@ -36,6 +36,7 @@ public:
, m_scene_ram(*this, "scene_ram")
, m_ground_ram(*this, "ground_ram")
, m_object_ram(*this, "object_ram")
+ , m_ym2203_port_b(0xff)
, m_maincpu(*this, "maincpu")
, m_audiocpu(*this, "audiocpu")
, m_ground(*this, "ground")
@@ -97,6 +98,7 @@ private:
/* misc */
uint8_t m_ctrl_reg;
uint32_t m_main_inten;
+ uint8_t m_ym2203_port_b;
/* devices */
required_device<cpu_device> m_maincpu;