--- a/src/xs_config.h	Mon Feb 09 11:14:18 2009 +0200
+++ b/src/xs_config.h	Mon Feb 09 13:23:32 2009 +0200
@@ -68,13 +68,28 @@
 
 
 typedef struct {
+    gchar           *name;
     gint            type;
     xs_int_point_t  points[XS_SIDPLAY2_NFPOINTS];
     gint            npoints;
-    gchar           *name;
+    
+    /* Distortion patch tunables */
+    gfloat          rate, point, voice_nonlinearity, cf_treshold;
+    
+    /* Filter Type 3 tunables */
+    gfloat          baseresistance, offset, steepness,
+                    minimumfetresistance;
+    
+    /* Filter Type 4 tunables */
+    gfloat          k, b;
 } xs_sid2_filter_t;
 
 
+typedef struct {
+    gfloat fs, fm, ft;
+} xs_sid1_filter_t;
+
+
 extern struct xs_cfg_t {
     /* General audio settings */
     gint        audioBitsPerSample;
@@ -94,9 +109,7 @@
     gint        playerEngine;       /* Selected player engine */
 
     gboolean    emulateFilters;
-    gfloat      sid1FilterFs;
-    gfloat      sid1FilterFm;
-    gfloat      sid1FilterFt;
+    xs_sid1_filter_t    sid1Filter;
 
     gint        sid2OptLevel;       /* SIDPlay2 emulation optimization */
     gint        sid2Builder;        /* SIDPlay2 "builder" aka SID-emu */