diff --git a/mc8051fun.h b/mc8051fun.h
index ec9012a..a47823a 100644
--- a/mc8051fun.h
+++ b/mc8051fun.h
@@ -18,4 +18,9 @@ int8_t rotary_encoder_stat(uint8_t b);
 extern uint8_t sevenseg_dec[10];
 extern uint8_t sevenseg_dec_inv[10];
 
+
+#define timer_init_val(freq) ((65536)-FOSC/12L/freq)
+
+uint16_t int_to_bcd(uint16_t i);
+
 #endif