diff --git a/src/engine/platform/es5506.cpp b/src/engine/platform/es5506.cpp
index f193c9ac7..c00f800fa 100644
--- a/src/engine/platform/es5506.cpp
+++ b/src/engine/platform/es5506.cpp
@@ -222,6 +222,34 @@ static const short amigaPanTable[128]={
   0xFE0, 0xFE4, 0xFE8, 0xFEC, 0xFF0, 0xFF4, 0xFF8, 0xFFF
 };
 
+void DivPlatformES5506::updateNoteChangesAsNeeded(int ch) {
+  if (chan[ch].noteChanged.changed) { // note value changed or frequency offset is changed
+    if (chan[ch].noteChanged.offs) {
+      if (chan[ch].pcm.freqOffs!=chan[ch].pcm.nextFreqOffs) {
+        chan[ch].pcm.freqOffs=chan[ch].pcm.nextFreqOffs;
+        chan[ch].nextFreq=NOTE_ES5506(ch,chan[ch].currNote);
+        chan[ch].noteChanged.freq=1;
+        chan[ch].freqChanged=true;
+      }
+    }
+    if (chan[ch].noteChanged.note) {
+      chan[ch].currNote=chan[ch].nextNote;
+      const int nextFreq=NOTE_ES5506(ch,chan[ch].nextNote);
+      if (chan[ch].nextFreq!=nextFreq) {
+        chan[ch].nextFreq=nextFreq;
+        chan[ch].noteChanged.freq=1;
+      }
+    }
+    if (chan[ch].noteChanged.freq) {
+      if (chan[ch].baseFreq!=chan[ch].nextFreq) {
+        chan[ch].baseFreq=chan[ch].nextFreq;
+        chan[ch].freqChanged=true;
+      }
+    }
+    chan[ch].noteChanged.changed=0;
+  }
+}
+
 void DivPlatformES5506::tick(bool sysTick) {
   for (int i=0; i<=chanMax; i++) {
     chan[i].std.next();
@@ -592,31 +620,7 @@ void DivPlatformES5506::tick(bool sysTick) {
       }
       chan[i].envChanged.changed=0;
     }
-    if (chan[i].noteChanged.changed) { // note value changed or frequency offset is changed
-      if (chan[i].noteChanged.offs) {
-        if (chan[i].pcm.freqOffs!=chan[i].pcm.nextFreqOffs) {
-          chan[i].pcm.freqOffs=chan[i].pcm.nextFreqOffs;
-          chan[i].nextFreq=NOTE_ES5506(i,chan[i].currNote);
-          chan[i].noteChanged.freq=1;
-          chan[i].freqChanged=true;
-        }
-      }
-      if (chan[i].noteChanged.note) {
-        chan[i].currNote=chan[i].nextNote;
-        const int nextFreq=NOTE_ES5506(i,chan[i].nextNote);
-        if (chan[i].nextFreq!=nextFreq) {
-          chan[i].nextFreq=nextFreq;
-          chan[i].noteChanged.freq=1;
-        }
-      }
-      if (chan[i].noteChanged.freq) {
-        if (chan[i].baseFreq!=chan[i].nextFreq) {
-          chan[i].baseFreq=chan[i].nextFreq;
-          chan[i].freqChanged=true;
-        }
-      }
-      chan[i].noteChanged.changed=0;
-    }
+    updateNoteChangesAsNeeded(i);
     if (chan[i].pcm.setPos) {
       if (chan[i].active) {
         const unsigned int start=chan[i].pcm.start;
@@ -832,6 +836,7 @@ int DivPlatformES5506::dispatch(DivCommand c) {
         chan[c.chan].pcmChanged.changed=0xff;
         chan[c.chan].noteChanged.changed=0xff;
         chan[c.chan].volChanged.changed=0xff;
+        updateNoteChangesAsNeeded(c.chan);
       }
       if (!chan[c.chan].std.vol.will) {
         if (amigaVol) {
diff --git a/src/engine/platform/es5506.h b/src/engine/platform/es5506.h
index de368c77e..ae7a316a2 100644
--- a/src/engine/platform/es5506.h
+++ b/src/engine/platform/es5506.h
@@ -281,6 +281,8 @@ class DivPlatformES5506: public DivDispatch, public es550x_intf {
   DivMemoryComposition memCompo;
   unsigned char regPool[4*16*128]; // 7 bit page x 16 registers per page x 32 bit per registers
 
+  void updateNoteChangesAsNeeded(int ch);
+
   friend void putDispatchChip(void*,int);
   friend void putDispatchChan(void*,int,int);
 
diff --git a/src/engine/playback.cpp b/src/engine/playback.cpp
index 77e885f69..541c761d7 100644
--- a/src/engine/playback.cpp
+++ b/src/engine/playback.cpp
@@ -1039,26 +1039,6 @@ void DivEngine::processRow(int i, bool afterDelay) {
         clockDrift=0;
         subticks=0;
         break;
-      case 0xf1: // single pitch ramp up
-      case 0xf2: // single pitch ramp down
-        if (effect==0xf1) {
-          chan[i].portaNote=song.limitSlides?0x60:255;
-        } else {
-          chan[i].portaNote=song.limitSlides?disCont[dispatchOfChan[i]].dispatch->getPortaFloor(dispatchChanOfChan[i]):-60;
-        }
-        chan[i].portaSpeed=effectVal;
-        chan[i].portaStop=true;
-        chan[i].nowYouCanStop=false;
-        chan[i].stopOnOff=false;
-        chan[i].scheduledSlideReset=false;
-        chan[i].inPorta=false;
-        if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
-        dispatchCmd(DivCommand(DIV_CMD_NOTE_PORTA,i,chan[i].portaSpeed*(song.linearPitch==2?song.pitchSlideSpeed:1),chan[i].portaNote));
-        chan[i].portaNote=-1;
-        chan[i].portaSpeed=-1;
-        chan[i].inPorta=false;
-        if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
-        break;
       case 0xf3: // fine volume ramp up
         // tremolo and vol slides are incompatible
         chan[i].tremoloDepth=0;
@@ -1198,7 +1178,30 @@ void DivEngine::processRow(int i, bool afterDelay) {
 
     if (effectVal==-1) effectVal=0;
     effectVal&=255;
-    perSystemPostEffect(i,effect,effectVal);
+    if (!perSystemPostEffect(i,effect,effectVal)) {
+      switch (effect) {
+        case 0xf1: // single pitch ramp up
+        case 0xf2: // single pitch ramp down
+          if (effect==0xf1) {
+            chan[i].portaNote=song.limitSlides?0x60:255;
+          } else {
+            chan[i].portaNote=song.limitSlides?disCont[dispatchOfChan[i]].dispatch->getPortaFloor(dispatchChanOfChan[i]):-60;
+          }
+          chan[i].portaSpeed=effectVal;
+          chan[i].portaStop=true;
+          chan[i].nowYouCanStop=false;
+          chan[i].stopOnOff=false;
+          chan[i].scheduledSlideReset=false;
+          chan[i].inPorta=false;
+          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
+          dispatchCmd(DivCommand(DIV_CMD_NOTE_PORTA,i,chan[i].portaSpeed*(song.linearPitch==2?song.pitchSlideSpeed:1),chan[i].portaNote));
+          chan[i].portaNote=-1;
+          chan[i].portaSpeed=-1;
+          chan[i].inPorta=false;
+          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
+          break;
+      }
+    }
   }
 }