-#define IRMP_SUPPORT_SIRCS_PROTOCOL 1 // flag: support SIRCS uses ~100 bytes\r
-#define IRMP_SUPPORT_NEC_PROTOCOL 1 // flag: support NEC + APPLE uses ~250 bytes\r
-#define IRMP_SUPPORT_SAMSUNG_PROTOCOL 1 // flag: support Samsung + Samsung32 uses ~250 bytes\r
-#define IRMP_SUPPORT_MATSUSHITA_PROTOCOL 1 // flag: support Matsushita uses ~50 bytes\r
-#define IRMP_SUPPORT_KASEIKYO_PROTOCOL 1 // flag: support Kaseikyo uses ~50 bytes\r
-#define IRMP_SUPPORT_RECS80_PROTOCOL 1 // flag: support RECS80 uses ~50 bytes\r
-#define IRMP_SUPPORT_RC5_PROTOCOL 1 // flag: support RC5 uses ~250 bytes\r
-#define IRMP_SUPPORT_DENON_PROTOCOL 1 // flag: support DENON uses ~250 bytes\r
-#define IRMP_SUPPORT_RC6_PROTOCOL 1 // flag: support RC6 uses ~200 bytes\r
-#define IRMP_SUPPORT_RECS80EXT_PROTOCOL 1 // flag: support RECS80EXT uses ~50 bytes\r
-#define IRMP_SUPPORT_NUBERT_PROTOCOL 1 // flag: support NUBERT uses ~50 bytes\r
-#define IRMP_SUPPORT_BANG_OLUFSEN_PROTOCOL 1 // flag: support Bang & Olufsen uses ~200 bytes\r
+#define IRMP_SUPPORT_SIRCS_PROTOCOL 1 // flag: support SIRCS uses ~100 bytes\r
+#define IRMP_SUPPORT_NEC_PROTOCOL 1 // flag: support NEC + APPLE uses ~250 bytes\r
+#define IRMP_SUPPORT_SAMSUNG_PROTOCOL 1 // flag: support Samsung + Samsung32 uses ~250 bytes\r
+#define IRMP_SUPPORT_MATSUSHITA_PROTOCOL 1 // flag: support Matsushita uses ~50 bytes\r
+#define IRMP_SUPPORT_KASEIKYO_PROTOCOL 1 // flag: support Kaseikyo uses ~50 bytes\r
+#define IRMP_SUPPORT_RECS80_PROTOCOL 1 // flag: support RECS80 uses ~50 bytes\r
+#define IRMP_SUPPORT_RC5_PROTOCOL 1 // flag: support RC5 uses ~250 bytes\r
+#define IRMP_SUPPORT_DENON_PROTOCOL 1 // flag: support DENON uses ~250 bytes\r
+#define IRMP_SUPPORT_RC6_PROTOCOL 1 // flag: support RC6 uses ~200 bytes\r
+#define IRMP_SUPPORT_RECS80EXT_PROTOCOL 1 // flag: support RECS80EXT uses ~50 bytes\r
+#define IRMP_SUPPORT_NUBERT_PROTOCOL 1 // flag: support NUBERT uses ~50 bytes\r
+#define IRMP_SUPPORT_BANG_OLUFSEN_PROTOCOL 1 // flag: support Bang & Olufsen uses ~200 bytes\r
+#define IRMP_SUPPORT_GRUNDIG_PROTOCOL 1 // flag: support Grundig uses ~150 bytes\r
+#define IRMP_SUPPORT_NOKIA_PROTOCOL 1 // flag: support Nokia uses ~150 bytes\r
+\r
+/*---------------------------------------------------------------------------------------------------------------------------------------------------\r
+ * THE FOLLOWING DECODERS WORK ONLY FOR F_INTERRUPTS > 14500!\r
+ *---------------------------------------------------------------------------------------------------------------------------------------------------\r
+ */\r
+#if F_INTERRUPTS >= 14500\r
+#define IRMP_SUPPORT_SIEMENS_PROTOCOL 1 // flag: support Siemens Gigaset uses ~150 bytes\r
+#define IRMP_SUPPORT_FDC_PROTOCOL 1 // flag: support FDC keyboard uses ~150 bytes\r
+#else\r
+#define IRMP_SUPPORT_SIEMENS_PROTOCOL 0 // DO NOT CHANGE! F_INTERRUPTS too low!\r
+#define IRMP_SUPPORT_FDC_PROTOCOL 0 // DO NOT CHANGE! F_INTERRUPTS too low!\r
+#endif\r