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-rw-r--r--src/mame/includes/marineb.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mame/includes/marineb.h b/src/mame/includes/marineb.h
index 60324a8ec75..e9319c9bb1d 100644
--- a/src/mame/includes/marineb.h
+++ b/src/mame/includes/marineb.h
@@ -1,5 +1,10 @@
// license:BSD-3-Clause
// copyright-holders:Zsolt Vasvari
+
+#define MASTER_CLOCK (XTAL_12MHz)
+#define CPU_CLOCK (MASTER_CLOCK/4)
+#define SOUND_CLOCK (MASTER_CLOCK/8)
+
class marineb_state : public driver_device
{
public: