--- uae/src/include/gui.h	2018/04/24 16:45:10	1.1.1.5
+++ uae/src/include/gui.h	2018/04/24 16:55:11	1.1.1.6
@@ -18,3 +18,16 @@ extern void gui_changesettings (void);
 extern unsigned int gui_ledstate;
 
 extern int no_gui;
+
+struct gui_info
+{
+    uae_u8 drive_motor[4];          /* motor on off */
+    uae_u8 drive_track[4];          /* rw-head track */
+    uae_u8 drive_writing[4];        /* drive is writing */
+    uae_u8 powerled;                /* state of power led */
+};
+
+extern struct gui_info gui_data;
+
+/* Functions to be called when prefs are changed by non-gui code.  */
+extern void gui_update_gfx (void);