diff --git a/papers/newIns.md b/papers/newIns.md
index 7cc0242b6..d983a3d2e 100644
--- a/papers/newIns.md
+++ b/papers/newIns.md
@@ -700,23 +700,33 @@ size | description
 ```
 size | description
 -----|------------------------------------
+  1  | flags 1
+     | - bit 7: dutyIsAbs
+     | - bit 3: noise on
+     | - bit 2: pulse on
+     | - bit 1: saw on
+     | - bit 0: triangle on
   1  | attack
   1  | decay
   1  | sustain
   1  | sustain rate
   1  | release
   1  | wave mix mode
-  1  | parameters
+  2  | duty
+  1  | flags 2
      | - bit 7: phase modulation
      | - bit 6: enable special wave
      | - bit 5: 1-bit noise
      | - bit 4: separate noise pitch
-     | - bit 3: wavetable channel
+     | - bit 3: do wavetable
+     | - bit 2: reset duty on new note
+     | - bit 1: osc sync
+     | - bit 0: ring mod
   1  | phase modulation source channel
   1  | ring modulation source channel
   1  | hard sync source channel
   1  | special wave
-  1  | parameters
+  1  | flags 3
      | - bit 1: left channel signal inversion
      | - bit 0: right channel signal inversion
   1  | feedback
diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index d42b742c4..fc6723502 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -1577,7 +1577,7 @@ void* DivEngine::getDispatchChanState(int ch) {
 
 void DivEngine::getChanPaired(int ch, std::vector<DivChannelPair>& ret) {
   if (ch<0 || ch>=chans) return;
-  disCont[dispatchOfChan[ch]].dispatch->getPaired(dispatchChanOfChan[ch], ret);
+  disCont[dispatchOfChan[ch]].dispatch->getPaired(dispatchChanOfChan[ch],ret);
 }
 
 DivChannelModeHints DivEngine::getChanModeHints(int ch) {
diff --git a/src/engine/instrument.cpp b/src/engine/instrument.cpp
index e34f6a3da..0d406e84d 100644
--- a/src/engine/instrument.cpp
+++ b/src/engine/instrument.cpp
@@ -1044,6 +1044,14 @@ void DivInstrument::writeFeatureS2(SafeWriter* w) {
 void DivInstrument::writeFeatureS3(SafeWriter* w) {
   FEATURE_BEGIN("S3");
 
+  w->writeC(
+    (sid3.dutyIsAbs?0x80:0)|
+    (sid3.noiseOn?8:0)|
+    (sid3.pulseOn?4:0)|
+    (sid3.sawOn?2:0)|
+    (sid3.triOn?1:0)
+  );
+
   w->writeC(sid3.a);
   w->writeC(sid3.d);
   w->writeC(sid3.s);
@@ -1052,12 +1060,17 @@ void DivInstrument::writeFeatureS3(SafeWriter* w) {
 
   w->writeC(sid3.mixMode);
 
+  w->writeS(sid3.duty);
+
   w->writeC(
     (sid3.phase_mod?0x80:0)|
     (sid3.specialWaveOn?0x40:0)|
     (sid3.oneBitNoise?0x20:0)|
     (sid3.separateNoisePitch?0x10:0)|
-    (sid3.doWavetable?8:0)
+    (sid3.doWavetable?8:0)|
+    (sid3.resetDuty?4:0)|
+    (sid3.oscSync?2:0)|
+    (sid3.ringMod?1:0)
   );
 
   w->writeC(sid3.phase_mod_source);
@@ -1067,10 +1080,9 @@ void DivInstrument::writeFeatureS3(SafeWriter* w) {
   w->writeC(sid3.phaseInv);
   w->writeC(sid3.feedback);
 
-  w->writeC(4); //number of filters
+  w->writeC(4); // number of filters
 
-  for(int i = 0; i < 4; i++)
-  {
+  for (int i=0; i<4; i++) {
     w->writeC(
       (sid3.filt[i].enabled?0x80:0)|
       (sid3.filt[i].init?0x40:0)|
@@ -2473,21 +2485,34 @@ void DivInstrument::readFeatureS2(SafeReader& reader, short version) {
 void DivInstrument::readFeatureS3(SafeReader& reader, short version) {
   READ_FEAT_BEGIN;
 
+  unsigned char next=reader.readC();
+
+  sid3.dutyIsAbs=next&0x80;
+  sid3.noiseOn=next&8;
+  sid3.pulseOn=next&4;
+  sid3.sawOn=next&2;
+  sid3.triOn=next&1;
+
   sid3.a=reader.readC();
   sid3.d=reader.readC();
   sid3.s=reader.readC();
   sid3.sr=reader.readC();
   sid3.r=reader.readC();
 
-  sid2.mixMode=reader.readC();
+  sid3.mixMode=reader.readC();
 
-  unsigned char next=reader.readC();
+  sid3.duty=reader.readS();
+
+  next=reader.readC();
 
   sid3.phase_mod=next&0x80;
   sid3.specialWaveOn=next&0x40;
   sid3.oneBitNoise=next&0x20;
   sid3.separateNoisePitch=next&0x10;
   sid3.doWavetable=next&8;
+  sid3.resetDuty=next&4;
+  sid3.oscSync=next&2;
+  sid3.ringMod=next&1;
 
   sid3.phase_mod_source=reader.readC();
   sid3.ring_mod_source=reader.readC();