diff --git a/sysmoOCTSIM/ncn8025.h b/sysmoOCTSIM/ncn8025.h
index 79e8b60..89b7f86 100644
--- a/sysmoOCTSIM/ncn8025.h
+++ b/sysmoOCTSIM/ncn8025.h
@@ -19,11 +19,13 @@
 	bool cmdvcc;	/* high: active */
 	bool simpres;	/* high: active */
 	bool led;	/* high: active */
+	bool interrupt;	/* high: active */
 	enum ncn8025_sim_clkdiv clkdiv;	/* raw 2bit value */
 	enum ncn8025_sim_voltage vsel;	/* raw 2bit value */
 };
 
 int ncn8025_set(uint8_t slot, const struct ncn8025_settings *set);
 int ncn8025_get(uint8_t slot, struct ncn8025_settings *set);
+bool ncn8025_interrupt_active(uint8_t slot);
 int ncn8025_init(unsigned int slot);
 void ncn8025_dump(const struct ncn8025_settings *set);