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diff --git a/src/mame/machine/meters.h b/src/mame/machine/meters.h
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+///////////////////////////////////////////////////////////////////////////
+// //
+// Electro mechanical meters //
+// //
+// 23-07-2004: Re-Animator //
+// //
+// TODO: - meter ticks if the signal changes from high to low AND the //
+// signal was high for at least 'reacttime' cycles //
+// It should tick if the signal goes from low to high AND stays //
+// high for at least xxx milliseconds //
+// //
+///////////////////////////////////////////////////////////////////////////
+
+#ifndef INC_MMTR
+#define INC_MMTR
+
+#define MAXMECHMETERS 8
+
+#define METERREACTTIME 30000 // number of cycles meter has to be active to tick
+
+void Mechmtr_init( int number);
+
+int MechMtr_GetNumberMeters(void);
+
+void MechMtr_Setcount( int id, long count);
+
+long MechMtr_Getcount( int id);
+
+void MechMtr_ReactTime(int id, long cycles);
+
+int Mechmtr_update( int id, long cycles, int state); // returns 1 if meter ticked
+
+#endif