diff --git a/src/engine/platform/ay.cpp b/src/engine/platform/ay.cpp
index c9c75f0f5..13dd2d842 100644
--- a/src/engine/platform/ay.cpp
+++ b/src/engine/platform/ay.cpp
@@ -120,7 +120,7 @@ void DivPlatformAY8910::runDAC() {
       bool end=false;
       bool changed=false;
       int prevOut=chan[i].dac.out;
-      while (chan[i].dac.period>rate && !end) {
+      while (chan[i].dac.period>dacRate && !end) {
         DivSample* s=parent->getSample(chan[i].dac.sample);
         if (s->samples<=0) {
           chan[i].dac.sample=-1;
@@ -143,7 +143,7 @@ void DivPlatformAY8910::runDAC() {
           end=true;
           break;
         }
-        chan[i].dac.period-=rate;
+        chan[i].dac.period-=dacRate;
       }
       if (changed && !end) {
         if (!isMuted[i]) {
@@ -797,6 +797,7 @@ void DivPlatformAY8910::setFlags(const DivConfig& flags) {
     chipClock=extClock;
     rate=chipClock/extDiv;
     clockSel=false;
+    dacRate=chipClock/dacRateDiv;
   } else {
     clockSel=flags.getBool("halfClock",false);
     switch (flags.getInt("clockSel",0)) {
@@ -851,6 +852,7 @@ void DivPlatformAY8910::setFlags(const DivConfig& flags) {
     }
     CHECK_CUSTOM_CLOCK;
     rate=chipClock/8;
+    dacRate=rate;
   }
   for (int i=0; i<3; i++) {
     oscBuf[i]->rate=rate;
diff --git a/src/engine/platform/ay.h b/src/engine/platform/ay.h
index 8f938d0a9..04e3aed12 100644
--- a/src/engine/platform/ay.h
+++ b/src/engine/platform/ay.h
@@ -104,7 +104,9 @@ class DivPlatformAY8910: public DivDispatch {
 
     bool extMode;
     unsigned int extClock;
+    int dacRate;
     unsigned char extDiv;
+    unsigned char dacRateDiv;
 
     bool stereo, sunsoft, intellivision, clockSel;
     bool ioPortA, ioPortB;
@@ -119,7 +121,6 @@ class DivPlatformAY8910: public DivDispatch {
     short* ayBuf[3];
     size_t ayBufLen;
 
-    void runDAC();
     void checkWrites();
     void updateOutSel(bool immediate=false);
   
@@ -127,6 +128,7 @@ class DivPlatformAY8910: public DivDispatch {
     friend void putDispatchChan(void*,int,int);
   
   public:
+    void runDAC();
     void setExtClockDiv(unsigned int eclk=COLOR_NTSC, unsigned char ediv=8);
     void acquire(short** buf, size_t len);
     int dispatch(DivCommand c);
@@ -151,10 +153,11 @@ class DivPlatformAY8910: public DivDispatch {
     const char** getRegisterSheet();
     int init(DivEngine* parent, int channels, int sugRate, const DivConfig& flags);
     void quit();
-    DivPlatformAY8910(bool useExtMode=false, unsigned int eclk=COLOR_NTSC, unsigned char ediv=8):
+    DivPlatformAY8910(bool useExtMode=false, unsigned int eclk=COLOR_NTSC, unsigned char ediv=8, unsigned char ddiv=24):
       DivDispatch(),
       extMode(useExtMode),
       extClock(eclk),
-      extDiv(ediv) {}
+      extDiv(ediv),
+      dacRateDiv(ddiv) {}
 };
 #endif
diff --git a/src/engine/platform/ym2203.cpp b/src/engine/platform/ym2203.cpp
index 974dbafae..cc2d1f3f7 100644
--- a/src/engine/platform/ym2203.cpp
+++ b/src/engine/platform/ym2203.cpp
@@ -169,6 +169,15 @@ void DivPlatformYM2203::acquire_combo(short** buf, size_t len) {
   static short ignored[2];
 
   for (size_t h=0; h<len; h++) {
+    // AY -> OPN
+    ay->runDAC();
+    ay->flushWrites();
+    for (DivRegWrite& i: ay->getRegisterWrites()) {
+      if (i.addr>15) continue;
+      immWrite(i.addr&15,i.val);
+    }
+    ay->getRegisterWrites().clear();
+
     os=0;
     // Nuked part
     for (unsigned int i=0; i<nukedMult; i++) {
@@ -242,6 +251,15 @@ void DivPlatformYM2203::acquire_ymfm(short** buf, size_t len) {
   }
 
   for (size_t h=0; h<len; h++) {
+    // AY -> OPN
+    ay->runDAC();
+    ay->flushWrites();
+    for (DivRegWrite& i: ay->getRegisterWrites()) {
+      if (i.addr>15) continue;
+      immWrite(i.addr&15,i.val);
+    }
+    ay->getRegisterWrites().clear();
+
     os=0;
     if (!writes.empty()) {
       if (--delay<1) {
diff --git a/src/engine/platform/ym2608.cpp b/src/engine/platform/ym2608.cpp
index 6bfb7d42e..7c10e76c2 100644
--- a/src/engine/platform/ym2608.cpp
+++ b/src/engine/platform/ym2608.cpp
@@ -321,6 +321,15 @@ void DivPlatformYM2608::acquire_combo(short** buf, size_t len) {
   }
 
   for (size_t h=0; h<len; h++) {
+    // AY -> OPN
+    ay->runDAC();
+    ay->flushWrites();
+    for (DivRegWrite& i: ay->getRegisterWrites()) {
+      if (i.addr>15) continue;
+      immWrite(i.addr&15,i.val);
+    }
+    ay->getRegisterWrites().clear();
+
     os[0]=0; os[1]=0;
     // Nuked part
     for (int i=0; i<nukedMult; i++) {
@@ -427,6 +436,15 @@ void DivPlatformYM2608::acquire_ymfm(short** buf, size_t len) {
   }
 
   for (size_t h=0; h<len; h++) {
+    // AY -> OPN
+    ay->runDAC();
+    ay->flushWrites();
+    for (DivRegWrite& i: ay->getRegisterWrites()) {
+      if (i.addr>15) continue;
+      immWrite(i.addr&15,i.val);
+    }
+    ay->getRegisterWrites().clear();
+
     os[0]=0; os[1]=0;
     if (!writes.empty()) {
       if (--delay<1) {
@@ -1675,7 +1693,7 @@ int DivPlatformYM2608::init(DivEngine* p, int channels, int sugRate, const DivCo
   fm=new ymfm::ym2608(iface);
   fm->set_fidelity(ymfm::OPN_FIDELITY_MIN);
   // YM2149, 2MHz
-  ay=new DivPlatformAY8910(true,chipClock,ayDiv);
+  ay=new DivPlatformAY8910(true,chipClock,ayDiv,48);
   ay->init(p,3,sugRate,ayFlags);
   ay->toggleRegisterDump(true);
   setFlags(flags);
diff --git a/src/engine/platform/ym2610.cpp b/src/engine/platform/ym2610.cpp
index a6ee50daf..e9cb021d0 100644
--- a/src/engine/platform/ym2610.cpp
+++ b/src/engine/platform/ym2610.cpp
@@ -256,6 +256,15 @@ void DivPlatformYM2610::acquire_combo(short** buf, size_t len) {
   }
 
   for (size_t h=0; h<len; h++) {
+    // AY -> OPN
+    ay->runDAC();
+    ay->flushWrites();
+    for (DivRegWrite& i: ay->getRegisterWrites()) {
+      if (i.addr>15) continue;
+      immWrite(i.addr&15,i.val);
+    }
+    ay->getRegisterWrites().clear();
+
     os[0]=0; os[1]=0;
     // Nuked part
     for (int i=0; i<24; i++) {
@@ -360,6 +369,15 @@ void DivPlatformYM2610::acquire_ymfm(short** buf, size_t len) {
   }
 
   for (size_t h=0; h<len; h++) {
+    // AY -> OPN
+    ay->runDAC();
+    ay->flushWrites();
+    for (DivRegWrite& i: ay->getRegisterWrites()) {
+      if (i.addr>15) continue;
+      immWrite(i.addr&15,i.val);
+    }
+    ay->getRegisterWrites().clear();
+
     os[0]=0; os[1]=0;
     if (!writes.empty()) {
       if (--delay<1 && !(fm->read(0)&0x80)) {
diff --git a/src/engine/platform/ym2610b.cpp b/src/engine/platform/ym2610b.cpp
index a7e0112ad..7d28a8016 100644
--- a/src/engine/platform/ym2610b.cpp
+++ b/src/engine/platform/ym2610b.cpp
@@ -320,7 +320,16 @@ void DivPlatformYM2610B::acquire_combo(short** buf, size_t len) {
   }
 
   for (size_t h=0; h<len; h++) {
+    // AY -> OPN
+    ay->runDAC();
+    ay->flushWrites();
+    for (DivRegWrite& i: ay->getRegisterWrites()) {
+      if (i.addr>15) continue;
+      immWrite(i.addr&15,i.val);
+    }
+    ay->getRegisterWrites().clear();
     os[0]=0; os[1]=0;
+
     // Nuked part
     for (int i=0; i<24; i++) {
       if (!writes.empty()) {
@@ -426,6 +435,15 @@ void DivPlatformYM2610B::acquire_ymfm(short** buf, size_t len) {
   }
 
   for (size_t h=0; h<len; h++) {
+    // AY -> OPN
+    ay->runDAC();
+    ay->flushWrites();
+    for (DivRegWrite& i: ay->getRegisterWrites()) {
+      if (i.addr>15) continue;
+      immWrite(i.addr&15,i.val);
+    }
+    ay->getRegisterWrites().clear();
+
     os[0]=0; os[1]=0;
     if (!writes.empty()) {
       if (--delay<1 && !(fm->read(0)&0x80)) {
diff --git a/src/engine/platform/ym2610shared.h b/src/engine/platform/ym2610shared.h
index 5af52ba6f..36db018f2 100644
--- a/src/engine/platform/ym2610shared.h
+++ b/src/engine/platform/ym2610shared.h
@@ -250,7 +250,7 @@ class DivPlatformYM2610Base: public DivPlatformOPN {
       fm->set_fidelity(ymfm::OPN_FIDELITY_MED);
       setFlags(flags);
       // YM2149, 2MHz
-      ay=new DivPlatformAY8910(true,chipClock,32);
+      ay=new DivPlatformAY8910(true,chipClock,32,144);
       ay->init(p,3,sugRate,ayFlags);
       ay->toggleRegisterDump(true);
       return 0;