diff --git a/src/engine/platform/arcade.cpp b/src/engine/platform/arcade.cpp
index 0bcb3b990..2935bad06 100644
--- a/src/engine/platform/arcade.cpp
+++ b/src/engine/platform/arcade.cpp
@@ -264,6 +264,10 @@ void DivPlatformArcade::tick(bool sysTick) {
       rWrite(0x1b,chan[i].std.wave.val&3);
     }
 
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
+
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         chan[i].keyOn=true;
diff --git a/src/engine/platform/ay.cpp b/src/engine/platform/ay.cpp
index d3db4ba8b..25f49e950 100644
--- a/src/engine/platform/ay.cpp
+++ b/src/engine/platform/ay.cpp
@@ -215,6 +215,9 @@ void DivPlatformAY8910::tick(bool sysTick) {
         rWrite(0x08+i,(chan[i].outVol&15)|((chan[i].psgMode&4)<<2));
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         oldWrites[0x08+i]=-1;
diff --git a/src/engine/platform/ay8930.cpp b/src/engine/platform/ay8930.cpp
index 9fa39131c..e4fa30dc4 100644
--- a/src/engine/platform/ay8930.cpp
+++ b/src/engine/platform/ay8930.cpp
@@ -226,6 +226,9 @@ void DivPlatformAY8930::tick(bool sysTick) {
         rWrite(0x08+i,(chan[i].outVol&31)|((chan[i].psgMode&4)<<3));
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         oldWrites[0x08+i]=-1;
diff --git a/src/engine/platform/bubsyswsg.cpp b/src/engine/platform/bubsyswsg.cpp
index 91f50d461..569e82f1c 100644
--- a/src/engine/platform/bubsyswsg.cpp
+++ b/src/engine/platform/bubsyswsg.cpp
@@ -110,6 +110,9 @@ void DivPlatformBubSysWSG::tick(bool sysTick) {
         if (!chan[i].keyOff) chan[i].keyOn=true;
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].active) {
       if (chan[i].ws.tick()) {
         updateWave(i);
diff --git a/src/engine/platform/c64.cpp b/src/engine/platform/c64.cpp
index 4c3cc32e4..12ec3f5f9 100644
--- a/src/engine/platform/c64.cpp
+++ b/src/engine/platform/c64.cpp
@@ -181,6 +181,9 @@ void DivPlatformC64::tick(bool sysTick) {
       chan[i].wave=chan[i].std.wave.val;
       rWrite(i*7+4,(chan[i].wave<<4)|(chan[i].ring<<2)|(chan[i].sync<<1)|(int)(chan[i].active));
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].std.ex1.had) {
       filtControl=chan[i].std.ex1.val&15;
       updateFilter();
diff --git a/src/engine/platform/fds.cpp b/src/engine/platform/fds.cpp
index 16e24f130..c581c516e 100644
--- a/src/engine/platform/fds.cpp
+++ b/src/engine/platform/fds.cpp
@@ -107,21 +107,11 @@ void DivPlatformFDS::tick(bool sysTick) {
       rWrite(0x4080,0x80|chan[i].outVol);
     }
     if (chan[i].std.arp.had) {
-      if (i==3) { // noise
+      if (!chan[i].inPorta) {
         if (chan[i].std.arp.mode) {
-          chan[i].baseFreq=chan[i].std.arp.val;
+          chan[i].baseFreq=NOTE_FREQUENCY(chan[i].std.arp.val);
         } else {
-          chan[i].baseFreq=chan[i].note+chan[i].std.arp.val;
-        }
-        if (chan[i].baseFreq>255) chan[i].baseFreq=255;
-        if (chan[i].baseFreq<0) chan[i].baseFreq=0;
-      } else {
-        if (!chan[i].inPorta) {
-          if (chan[i].std.arp.mode) {
-            chan[i].baseFreq=NOTE_FREQUENCY(chan[i].std.arp.val);
-          } else {
-            chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note+chan[i].std.arp.val);
-          }
+          chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note+chan[i].std.arp.val);
         }
       }
       chan[i].freqChanged=true;
@@ -155,6 +145,9 @@ void DivPlatformFDS::tick(bool sysTick) {
         //if (!chan[i].keyOff) chan[i].keyOn=true;
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].active) {
       if (ws.tick()) {
         updateWave();
diff --git a/src/engine/platform/gb.cpp b/src/engine/platform/gb.cpp
index c28478a3a..d3bb28e5e 100644
--- a/src/engine/platform/gb.cpp
+++ b/src/engine/platform/gb.cpp
@@ -192,6 +192,9 @@ void DivPlatformGB::tick(bool sysTick) {
         if (!chan[i].keyOff) chan[i].keyOn=true;
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         chan[i].keyOn=true;
diff --git a/src/engine/platform/genesis.cpp b/src/engine/platform/genesis.cpp
index bcca663ec..1385c62cf 100644
--- a/src/engine/platform/genesis.cpp
+++ b/src/engine/platform/genesis.cpp
@@ -258,6 +258,10 @@ void DivPlatformGenesis::tick(bool sysTick) {
       }
     }
 
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
+
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         chan[i].keyOn=true;
diff --git a/src/engine/platform/lynx.cpp b/src/engine/platform/lynx.cpp
index a62f0d458..16d3f15ea 100644
--- a/src/engine/platform/lynx.cpp
+++ b/src/engine/platform/lynx.cpp
@@ -171,6 +171,10 @@ void DivPlatformLynx::tick(bool sysTick) {
       }
     }
 
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
+
     if (chan[i].freqChanged) {
       if (chan[i].lfsr >= 0) {
         WRITE_LFSR(i, (chan[i].lfsr&0xff));
diff --git a/src/engine/platform/mmc5.cpp b/src/engine/platform/mmc5.cpp
index 3c7f3dcab..696ae6d21 100644
--- a/src/engine/platform/mmc5.cpp
+++ b/src/engine/platform/mmc5.cpp
@@ -123,6 +123,9 @@ void DivPlatformMMC5::tick(bool sysTick) {
       chan[i].duty=chan[i].std.duty.val;
       rWrite(0x5000+i*4,0x30|chan[i].outVol|((chan[i].duty&3)<<6));
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         chan[i].freqChanged=true;
diff --git a/src/engine/platform/n163.cpp b/src/engine/platform/n163.cpp
index 6a1eb60e0..a9634fa95 100644
--- a/src/engine/platform/n163.cpp
+++ b/src/engine/platform/n163.cpp
@@ -261,6 +261,9 @@ void DivPlatformN163::tick(bool sysTick) {
         }
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].std.ex1.had) {
       if (chan[i].waveLen!=(chan[i].std.ex1.val&0xfc)) {
         chan[i].waveLen=chan[i].std.ex1.val&0xfc;
diff --git a/src/engine/platform/nes.cpp b/src/engine/platform/nes.cpp
index 7e291446f..e4bfbca9b 100644
--- a/src/engine/platform/nes.cpp
+++ b/src/engine/platform/nes.cpp
@@ -195,6 +195,9 @@ void DivPlatformNES::tick(bool sysTick) {
         chan[i].freqChanged=true;
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].sweepChanged) {
       chan[i].sweepChanged=false;
       if (i==0) {
diff --git a/src/engine/platform/opl.cpp b/src/engine/platform/opl.cpp
index e73ca41e4..7050e0007 100644
--- a/src/engine/platform/opl.cpp
+++ b/src/engine/platform/opl.cpp
@@ -269,6 +269,10 @@ void DivPlatformOPL::tick(bool sysTick) {
       }
     }
 
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
+
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         chan[i].keyOn=true;
diff --git a/src/engine/platform/opll.cpp b/src/engine/platform/opll.cpp
index cb6ceba83..d94d1e26d 100644
--- a/src/engine/platform/opll.cpp
+++ b/src/engine/platform/opll.cpp
@@ -145,6 +145,10 @@ void DivPlatformOPLL::tick(bool sysTick) {
       }
     }
 
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
+
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         chan[i].keyOn=true;
diff --git a/src/engine/platform/pce.cpp b/src/engine/platform/pce.cpp
index cff5e534a..2c248db09 100644
--- a/src/engine/platform/pce.cpp
+++ b/src/engine/platform/pce.cpp
@@ -196,6 +196,9 @@ void DivPlatformPCE::tick(bool sysTick) {
         if (!chan[i].keyOff) chan[i].keyOn=true;
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].active) {
       if (chan[i].ws.tick() || (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1)) {
         updateWave(i);
diff --git a/src/engine/platform/pcspkr.cpp b/src/engine/platform/pcspkr.cpp
index 8e1705f50..e7062d213 100644
--- a/src/engine/platform/pcspkr.cpp
+++ b/src/engine/platform/pcspkr.cpp
@@ -186,6 +186,9 @@ void DivPlatformPCSpeaker::tick(bool sysTick) {
         chan[i].freqChanged=true;
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
       chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true)-1+chan[i].std.pitch.val;
       if (chan[i].freq<0) chan[i].freq=0;
diff --git a/src/engine/platform/pet.cpp b/src/engine/platform/pet.cpp
index 0fe4523db..47bb2e3d4 100644
--- a/src/engine/platform/pet.cpp
+++ b/src/engine/platform/pet.cpp
@@ -112,6 +112,9 @@ void DivPlatformPET::tick(bool sysTick) {
       rWrite(10,chan.wave);
     }
   }
+  if (chan.std.pitch.had) {
+      chan.freqChanged=true;
+    }
   if (chan.freqChanged || chan.keyOn || chan.keyOff) {
     chan.freq=parent->calcFreq(chan.baseFreq,chan.pitch,true)+chan.std.pitch.val;
     if (chan.freq>257) chan.freq=257;
diff --git a/src/engine/platform/qsound.cpp b/src/engine/platform/qsound.cpp
index 601ea0ea9..338870109 100644
--- a/src/engine/platform/qsound.cpp
+++ b/src/engine/platform/qsound.cpp
@@ -326,6 +326,9 @@ void DivPlatformQSound::tick(bool sysTick) {
         chan[i].freqChanged=true;
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
       //DivInstrument* ins=parent->getIns(chan[i].ins);
       chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false)+chan[i].std.pitch.val;
diff --git a/src/engine/platform/saa.cpp b/src/engine/platform/saa.cpp
index ca91800c2..0e06c3388 100644
--- a/src/engine/platform/saa.cpp
+++ b/src/engine/platform/saa.cpp
@@ -166,6 +166,9 @@ void DivPlatformSAA1099::tick(bool sysTick) {
     if (chan[i].std.wave.had) {
       chan[i].psgMode=chan[i].std.wave.val&3;
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].std.ex1.had) {
       saaEnv[i/3]=chan[i].std.ex1.val;
       rWrite(0x18+(i/3),saaEnv[i/3]);
diff --git a/src/engine/platform/segapcm.cpp b/src/engine/platform/segapcm.cpp
index 97ff900ae..79d7179a2 100644
--- a/src/engine/platform/segapcm.cpp
+++ b/src/engine/platform/segapcm.cpp
@@ -99,6 +99,10 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
         chan[i].freqChanged=true;
       }
     }
+    
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     /*if (chan[i].keyOn || chan[i].keyOff) {
       chan[i].keyOff=false;
     }*/
diff --git a/src/engine/platform/sms.cpp b/src/engine/platform/sms.cpp
index acd2c0726..d755e84f6 100644
--- a/src/engine/platform/sms.cpp
+++ b/src/engine/platform/sms.cpp
@@ -98,6 +98,9 @@ void DivPlatformSMS::tick(bool sysTick) {
         }
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
   }
   for (int i=0; i<3; i++) {
     if (chan[i].freqChanged) {
diff --git a/src/engine/platform/swan.cpp b/src/engine/platform/swan.cpp
index 99d819b1f..3b4a955ea 100644
--- a/src/engine/platform/swan.cpp
+++ b/src/engine/platform/swan.cpp
@@ -173,6 +173,9 @@ void DivPlatformSwan::tick(bool sysTick) {
         chan[i].ws.changeWave1(chan[i].wave);
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].active) {
       sndCtrl|=(1<<i);
       if (chan[i].ws.tick()) {
diff --git a/src/engine/platform/tia.cpp b/src/engine/platform/tia.cpp
index dc6c607fe..86b5e6be1 100644
--- a/src/engine/platform/tia.cpp
+++ b/src/engine/platform/tia.cpp
@@ -116,6 +116,9 @@ void DivPlatformTIA::tick(bool sysTick) {
       rWrite(0x15+i,chan[i].shape);
       chan[i].freqChanged=true;
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
       if (chan[i].insChanged) {
         if (!chan[i].std.wave.will) {
diff --git a/src/engine/platform/tx81z.cpp b/src/engine/platform/tx81z.cpp
index 6f71be755..98f68a54b 100644
--- a/src/engine/platform/tx81z.cpp
+++ b/src/engine/platform/tx81z.cpp
@@ -228,6 +228,10 @@ void DivPlatformTX81Z::tick(bool sysTick) {
       rWrite(0x1b,chan[i].std.wave.val&3);
     }
 
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
+
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         chan[i].keyOn=true;
diff --git a/src/engine/platform/vera.cpp b/src/engine/platform/vera.cpp
index 31d52569a..99da6062e 100644
--- a/src/engine/platform/vera.cpp
+++ b/src/engine/platform/vera.cpp
@@ -184,6 +184,9 @@ void DivPlatformVERA::tick(bool sysTick) {
     if (chan[i].std.wave.had) {
       rWriteHi(i,3,chan[i].std.wave.val);
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].freqChanged) {
       chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,8)+chan[i].std.pitch.val;
       if (chan[i].freq>65535) chan[i].freq=65535;
diff --git a/src/engine/platform/vic20.cpp b/src/engine/platform/vic20.cpp
index 7817cd839..44aba9670 100644
--- a/src/engine/platform/vic20.cpp
+++ b/src/engine/platform/vic20.cpp
@@ -119,6 +119,9 @@ void DivPlatformVIC20::tick(bool sysTick) {
         chan[i].keyOn=true;
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
       chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true)+chan[i].std.pitch.val;
       if (i<3) {
diff --git a/src/engine/platform/vrc6.cpp b/src/engine/platform/vrc6.cpp
index 048b42cdb..d8b37d92f 100644
--- a/src/engine/platform/vrc6.cpp
+++ b/src/engine/platform/vrc6.cpp
@@ -178,6 +178,9 @@ void DivPlatformVRC6::tick(bool sysTick) {
         chWrite(i,0,(chan[i].outVol&0xf)|((chan[i].duty&7)<<4));
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
       if (i==2) { // sawtooth
         chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true)-1+chan[i].std.pitch.val;
diff --git a/src/engine/platform/x1_010.cpp b/src/engine/platform/x1_010.cpp
index df6682adb..229d8eab6 100644
--- a/src/engine/platform/x1_010.cpp
+++ b/src/engine/platform/x1_010.cpp
@@ -372,6 +372,9 @@ void DivPlatformX1_010::tick(bool sysTick) {
         }
       }
     }
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
     if (chan[i].std.ex1.had) {
       bool nextEnable=(chan[i].std.ex1.val&1);
       if (nextEnable!=(chan[i].env.flag.envEnable)) {
diff --git a/src/engine/platform/ym2610.cpp b/src/engine/platform/ym2610.cpp
index 3d6c8ed29..6f4a1e46c 100644
--- a/src/engine/platform/ym2610.cpp
+++ b/src/engine/platform/ym2610.cpp
@@ -408,6 +408,10 @@ void DivPlatformYM2610::tick(bool sysTick) {
       }
     }
 
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
+
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         chan[i].keyOn=true;
diff --git a/src/engine/platform/ym2610b.cpp b/src/engine/platform/ym2610b.cpp
index aeadeae47..04bc096a9 100644
--- a/src/engine/platform/ym2610b.cpp
+++ b/src/engine/platform/ym2610b.cpp
@@ -472,6 +472,10 @@ void DivPlatformYM2610B::tick(bool sysTick) {
       }
     }
 
+    if (chan[i].std.pitch.had) {
+      chan[i].freqChanged=true;
+    }
+
     if (chan[i].std.phaseReset.had) {
       if (chan[i].std.phaseReset.val==1) {
         chan[i].keyOn=true;