diff --git a/src/include/86box/nvr.h b/src/include/86box/nvr.h
index ceb1bc459..f1776bf79 100644
--- a/src/include/86box/nvr.h
+++ b/src/include/86box/nvr.h
@@ -121,6 +121,7 @@ extern void	nvr_wp_set(int set, int h, nvr_t *nvr);
 extern void	nvr_via_wp_set(int set, int reg, nvr_t *nvr);
 extern void	nvr_bank_set(int base, uint8_t bank, nvr_t *nvr);
 extern void	nvr_lock_set(int base, int size, int lock, nvr_t *nvr);
+extern void	nvr_irq_set(int irq, nvr_t *nvr);
 
 
 #endif	/*EMU_NVR_H*/
diff --git a/src/nvr_at.c b/src/nvr_at.c
index ff1c6fcb0..171a131cc 100644
--- a/src/nvr_at.c
+++ b/src/nvr_at.c
@@ -922,6 +922,13 @@ nvr_lock_set(int base, int size, int lock, nvr_t *nvr)
 }
 
 
+void
+nvr_irq_set(int irq, nvr_t *nvr)
+{
+    nvr->irq = irq;
+}
+
+
 static void
 nvr_at_reset(void *priv)
 {