diff --git a/TODO.md b/TODO.md
deleted file mode 100644
index 859ad68c2..000000000
--- a/TODO.md
+++ /dev/null
@@ -1,7 +0,0 @@
-# to-do for 0.6pre1.5
-
-- stereo separation control for AY
-- "paste with instrument"
-- FM operator muting
-- FM operator swap
-- bug fixes
diff --git a/demos/Moon.fur b/demos/Moon.fur
new file mode 100644
index 000000000..366de0452
Binary files /dev/null and b/demos/Moon.fur differ
diff --git a/demos/You're_Doing_Well!_GB.fur b/demos/You're_Doing_Well!_GB.fur
new file mode 100644
index 000000000..01cfff9d2
Binary files /dev/null and b/demos/You're_Doing_Well!_GB.fur differ
diff --git a/extern/imgui_patched/imgui.h b/extern/imgui_patched/imgui.h
index 7249c5402..3d600ea2b 100644
--- a/extern/imgui_patched/imgui.h
+++ b/extern/imgui_patched/imgui.h
@@ -1042,7 +1042,7 @@ enum ImGuiInputTextFlags_
     ImGuiInputTextFlags_AlwaysOverwrite     = 1 << 13,  // Overwrite mode
     ImGuiInputTextFlags_ReadOnly            = 1 << 14,  // Read-only mode
     ImGuiInputTextFlags_Password            = 1 << 15,  // Password mode, display all characters as '*'
-    ImGuiInputTextFlags_NoUndoRedo          = 1 << 16,  // Disable undo/redo. Note that input text owns the text data while active, if you want to provide your own undo/redo stack you need e.g. to call ClearActiveID().
+    ImGuiInputTextFlags_UndoRedo            = 1 << 16,  // Enable undo/redo. Note that input text owns the text data while active, if you want to provide your own undo/redo stack you need e.g. to call ClearActiveID().
     ImGuiInputTextFlags_CharsScientific     = 1 << 17,  // Allow 0123456789.+-*/eE (Scientific notation input)
     ImGuiInputTextFlags_CallbackResize      = 1 << 18,  // Callback on buffer capacity changes request (beyond 'buf_size' parameter value), allowing the string to grow. Notify when the string wants to be resized (for string types which hold a cache of their Size). You will be provided a new BufSize in the callback and NEED to honor it. (see misc/cpp/imgui_stdlib.h for an example of using this)
     ImGuiInputTextFlags_CallbackEdit        = 1 << 19   // Callback on any edit (note that InputText() already returns true on edit, the callback is useful mainly to manipulate the underlying buffer while focus is active)
@@ -1220,6 +1220,8 @@ enum ImGuiTableFlags_
     // Sorting
     ImGuiTableFlags_SortMulti                  = 1 << 26,  // Hold shift when clicking headers to sort on multiple column. TableGetSortSpecs() may return specs where (SpecsCount > 1).
     ImGuiTableFlags_SortTristate               = 1 << 27,  // Allow no sorting, disable default sorting. TableGetSortSpecs() may return specs where (SpecsCount == 0).
+    // tildearrow
+    ImGuiTableFlags_NoBordersInFrozenArea      = 1 << 28,  // Disable vertical borders in frozen area.
 
     // [Internal] Combinations and masks
     ImGuiTableFlags_SizingMask_                = ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_SizingFixedSame | ImGuiTableFlags_SizingStretchProp | ImGuiTableFlags_SizingStretchSame
diff --git a/extern/imgui_patched/imgui_tables.cpp b/extern/imgui_patched/imgui_tables.cpp
index 5a21a0b13..46bf0b132 100644
--- a/extern/imgui_patched/imgui_tables.cpp
+++ b/extern/imgui_patched/imgui_tables.cpp
@@ -2532,7 +2532,7 @@ void ImGui::TableDrawBorders(ImGuiTable* table)
     // Draw inner border and resizing feedback
     ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, table->InstanceCurrent);
     const float border_size = TABLE_BORDER_SIZE;
-    const float draw_y1 = table->InnerRect.Min.y;
+    const float draw_y1 = table->InnerRect.Min.y + ((table->Flags & ImGuiTableFlags_NoBordersInFrozenArea)?table_instance->LastFirstRowHeight:0.0f);
     const float draw_y2_body = table->InnerRect.Max.y;
     const float draw_y2_head = table->IsUsingHeaders ? ImMin(table->InnerRect.Max.y, (table->FreezeRowsCount >= 1 ? table->InnerRect.Min.y : table->WorkRect.Min.y) + table_instance->LastFirstRowHeight) : draw_y1;
     if (table->Flags & ImGuiTableFlags_BordersInnerV)
diff --git a/extern/imgui_patched/imgui_widgets.cpp b/extern/imgui_patched/imgui_widgets.cpp
index 93dfd5343..4579400d4 100644
--- a/extern/imgui_patched/imgui_widgets.cpp
+++ b/extern/imgui_patched/imgui_widgets.cpp
@@ -3713,7 +3713,12 @@ static bool STB_TEXTEDIT_INSERTCHARS(ImGuiInputTextState* obj, int pos, const Im
 {
     const bool is_resizable = (obj->Flags & ImGuiInputTextFlags_CallbackResize) != 0;
     const int text_len = obj->CurLenW;
-    IM_ASSERT(pos <= text_len);
+    if (pos > text_len) {
+      printf("failing STB_TEXTEDIT_INSERTCHARS assertion! oh man...\n");
+      obj->Edited = true; // ???
+      obj->ClearText();
+      return false;
+    }
 
     const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
     if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
@@ -3776,8 +3781,11 @@ static void stb_textedit_replace(ImGuiInputTextState* str, STB_TexteditState* st
         state->cursor = text_len;
         state->has_preferred_x = 0;
         return;
+    } else {
+      state->cursor = 0;
+      printf("STB_TEXTEDIT_INSERTCHARS fail!\n");
     }
-    IM_ASSERT(0); // Failed to insert character, normally shouldn't happen because of how we currently use stb_textedit_replace()
+    //IM_ASSERT(0); // Failed to insert character, normally shouldn't happen because of how we currently use stb_textedit_replace()
 }
 
 } // namespace ImStb
@@ -3962,7 +3970,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
     const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
     const bool is_readonly = (flags & ImGuiInputTextFlags_ReadOnly) != 0;
     const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
-    const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
+    const bool is_undoable = (flags & ImGuiInputTextFlags_UndoRedo) != 0;
     const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
     if (is_resizable)
         IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
diff --git a/extern/imgui_patched/imstb_textedit.h b/extern/imgui_patched/imstb_textedit.h
index 75a159dac..d93642305 100644
--- a/extern/imgui_patched/imstb_textedit.h
+++ b/extern/imgui_patched/imstb_textedit.h
@@ -717,6 +717,9 @@ static int stb_textedit_paste_internal(STB_TEXTEDIT_STRING *str, STB_TexteditSta
       state->cursor += len;
       state->has_preferred_x = 0;
       return 1;
+   } else {
+     printf("stb_textedit_paste_internal failed.\n");
+     state->cursor=0;
    }
    // note: paste failure will leave deleted selection, may be restored with an undo (see https://github.com/nothings/stb/issues/734 for details)
    return 0;
@@ -746,6 +749,9 @@ retry:
                if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, &ch, 1)) {
                   ++state->cursor;
                   state->has_preferred_x = 0;
+               } else {
+                 printf("key failed: first section.\n");
+                 state->cursor=0;
                }
             } else {
                stb_textedit_delete_selection(str,state); // implicitly clamps
@@ -753,6 +759,9 @@ retry:
                   stb_text_makeundo_insert(state, state->cursor, 1);
                   ++state->cursor;
                   state->has_preferred_x = 0;
+               } else {
+                 printf("key failed: second section.\n");
+                 state->cursor=0;
                }
             }
          }
@@ -1275,14 +1284,22 @@ static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
       STB_TEXTEDIT_DELETECHARS(str, u.where, u.delete_length);
    }
 
+   bool steFailed=false;
+
    // check type of recorded action:
    if (u.insert_length) {
       // easy case: was a deletion, so we need to insert n characters
-      STB_TEXTEDIT_INSERTCHARS(str, u.where, &s->undo_char[u.char_storage], u.insert_length);
+      if (!STB_TEXTEDIT_INSERTCHARS(str, u.where, &s->undo_char[u.char_storage], u.insert_length)) {
+        printf("undo u.insert_length failed\n");
+        state->cursor=0;
+        steFailed=true;
+      }
       s->undo_char_point -= u.insert_length;
    }
 
-   state->cursor = u.where + u.insert_length;
+   if (!steFailed) {
+     state->cursor = u.where + u.insert_length;
+   }
 
    s->undo_point--;
    s->redo_point--;
@@ -1327,13 +1344,21 @@ static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
       STB_TEXTEDIT_DELETECHARS(str, r.where, r.delete_length);
    }
 
+   bool steFailed=false;
+
    if (r.insert_length) {
       // easy case: need to insert n characters
-      STB_TEXTEDIT_INSERTCHARS(str, r.where, &s->undo_char[r.char_storage], r.insert_length);
+      if (!STB_TEXTEDIT_INSERTCHARS(str, r.where, &s->undo_char[r.char_storage], r.insert_length)) {
+        printf("redo insert char failed\n");
+        state->cursor=0;
+        steFailed=true;
+      }
       s->redo_char_point += r.insert_length;
    }
 
-   state->cursor = r.where + r.insert_length;
+   if (!steFailed) {
+     state->cursor = r.where + r.insert_length;
+   }
 
    s->undo_point++;
    s->redo_point++;
diff --git a/papers/doc/7-systems/dac.md b/papers/doc/7-systems/dac.md
new file mode 100644
index 000000000..856db2cd0
--- /dev/null
+++ b/papers/doc/7-systems/dac.md
@@ -0,0 +1,7 @@
+# Generic PCM DAC
+
+Realtek HD Audio's predecessor. It's just a 1/8/16-bit sample channel, with freely selectable rate and mono/stereo settings. With it, you can emulate PCM DACs found in Williams arcade boards, Sound Blasters, MSX TurboR, Atari STE, NEC PC-9801-86 etc.
+
+# effects
+
+none yet.
diff --git a/papers/doc/7-systems/mmc5.md b/papers/doc/7-systems/mmc5.md
index faf305c60..d483bd57c 100644
--- a/papers/doc/7-systems/mmc5.md
+++ b/papers/doc/7-systems/mmc5.md
@@ -9,4 +9,4 @@ additionally, it offers an 8-bit DAC which can be used to play samples. only one
 # effects
 
 - `12xx`: set duty cycle or noise mode of channel.
-  - may be 0-3 for the pulse channels and 0-1 for the noise channel.
+  - may be 0-3 for the pulse channels.
diff --git a/papers/doc/7-systems/n163.md b/papers/doc/7-systems/n163.md
index 3c2f389f9..efdc3c506 100644
--- a/papers/doc/7-systems/n163.md
+++ b/papers/doc/7-systems/n163.md
@@ -1,8 +1,8 @@
 # Namco 163 (also called N163, Namco C163, Namco 106 (sic), Namco 160 or Namco 129)
 
-This is one of Namco's NES mappers, with up to 8 wavetable channels. It has also 128 byte of internal RAM, and both channel register and wavetables are stored here. Wavetables are variable size and freely allocable anywhere in RAM, it means it can use part of or continuously pre-loaded waveform and its sequences in RAM. But waveform RAM area becomes smaller as more channels are activated; as channel registers consumes 8 bytes for each channel. You must avoid conflict with channel register area and waveform for avoid broken channel playback.
+This is one of Namco's NES mappers, with up to 8 wavetable channels. It has also 256 nibbles (128 bytes) of internal RAM, and both channel registers and wavetables are stored here. Wavetables are variable in size and freely allocable anywhere in RAM, it means it can use part of or continuously pre-loaded waveform and its sequences in RAM. At least 128 nibbles (64 bytes) can be dedicated to waves, with more available if not all channels are used - waveform RAM area becomes smaller as more channels are activated, since channel registers consume 8 bytes for each channel. You must avoid conflict with channel register area and waveform to avoid broken channel playback.
 
-It outputs only a single channel at clock; so its sound quality gets more crunchy as more channels are activated.
+Namco 163 uses time-division multiplexing for its output. this means that only one channel is output per sample (like OPLL and OPN2). therefore, its sound quality gets worse as more channels are activated.
 
 Furnace supports loading waveforms into RAM and waveform playback simultaneously, and channel limit is dynamically changeable with effect commands.
 You must load waveform to RAM first for playback, as its load behavior auto-updates when every waveform changes.
diff --git a/papers/format.md b/papers/format.md
index da06488fa..1d4e7fc76 100644
--- a/papers/format.md
+++ b/papers/format.md
@@ -32,6 +32,8 @@ these fields are 0 in format versions prior to 100 (0.6pre1).
 
 the format versions are:
 
+- 116: Furnace 0.6pre1.5
+- 115: Furnace dev115
 - 114: Furnace dev114
 - 113: Furnace dev113
 - 112: Furnace dev112
@@ -342,7 +344,9 @@ size | description
   1  | SN periods under 8 are treated as 1 (>=108) or reserved
   1  | cut/delay effect policy (>=110) or reserved
   1  | 0B/0D effect treatment (>=113) or reserved
-  4  | reserved
+  1  | automatic system name detection (>=115) or reserved
+     | - this one isn't a compatibility flag, but it's here for convenience...
+  3  | reserved
  --- | **virtual tempo data**
   2  | virtual tempo numerator of first song (>=96) or reserved
   2  | virtual tempo denominator of first song (>=96) or reserved
@@ -499,7 +503,11 @@ size | description
   1  | ws
   1  | ksr
   1  | operator enabled (>=114) or reserved
- 11  | reserved
+  1  | KVS mode (>=115) or reserved
+     | - 0: off
+     | - 1: on
+     | - 2: auto (depending on alg)
+ 10  | reserved
  --- | **Game Boy instrument data**
   1  | volume
   1  | direction
diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index 12f76a518..f3c0154b8 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -2004,6 +2004,14 @@ void DivEngine::recalcChans() {
 }
 
 void DivEngine::reset() {
+  if (output) if (output->midiOut!=NULL) {
+    output->midiOut->send(TAMidiMessage(TA_MIDI_MACHINE_STOP,0,0));
+    for (int i=0; i<chans; i++) {
+      if (chan[i].curMidiNote>=0) {
+        output->midiOut->send(TAMidiMessage(0x80|(i&15),chan[i].curMidiNote,0));
+      }
+    }
+  }
   for (int i=0; i<DIV_MAX_CHANS; i++) {
     chan[i]=DivChannelState();
     if (i<chans) chan[i].volMax=(disCont[dispatchOfChan[i]].dispatch->dispatch(DivCommand(DIV_CMD_GET_VOLMAX,dispatchChanOfChan[i]))<<8)|0xff;
diff --git a/src/engine/engine.h b/src/engine/engine.h
index cb7df1dc9..42d29f120 100644
--- a/src/engine/engine.h
+++ b/src/engine/engine.h
@@ -46,8 +46,8 @@
 #define BUSY_BEGIN_SOFT softLocked=true; isBusy.lock();
 #define BUSY_END isBusy.unlock(); softLocked=false;
 
-#define DIV_VERSION "dev114"
-#define DIV_ENGINE_VERSION 114
+#define DIV_VERSION "0.6pre1.5"
+#define DIV_ENGINE_VERSION 116
 // for imports
 #define DIV_VERSION_MOD 0xff01
 #define DIV_VERSION_FC 0xff02
diff --git a/src/engine/fileOps.cpp b/src/engine/fileOps.cpp
index 6f6828eda..abfd7395b 100644
--- a/src/engine/fileOps.cpp
+++ b/src/engine/fileOps.cpp
@@ -196,6 +196,15 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
     }
     */
 
+    // Genesis detuned on Defle v10 and earlier
+    /*if (ds.version<19 && ds.system[0]==DIV_SYSTEM_GENESIS) {
+      ds.tuning=443.23;
+    }*/
+    // C64 detuned on Defle v11 and earlier
+    /*if (ds.version<21 && (ds.system[0]==DIV_SYSTEM_C64_6581 || ds.system[0]==DIV_SYSTEM_C64_8580)) {
+      ds.tuning=433.2;
+    }*/
+
     logI("reading module data...");
     if (ds.version>0x0c) {
       ds.subsong[0]->hilightA=reader.readC();
@@ -449,6 +458,9 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
               ins->fm.op[j].ssgEnv=reader.readC();
             }
           }
+          if (ds.version<0x12) { // before version 10 all ops were responsive to volume
+            ins->fm.op[j].kvs=1;
+          }
 
           logD("OP%d: AM %d AR %d DAM %d DR %d DVB %d EGT %d KSL %d MULT %d RR %d SL %d SUS %d TL %d VIB %d WS %d RS %d DT %d D2R %d SSG-EG %d",j,
                ins->fm.op[j].am,
@@ -1085,6 +1097,9 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
     if (ds.version<113) {
       ds.jumpTreatment=1;
     }
+    if (ds.version<115) {
+      ds.autoSystem=false;
+    }
     ds.isDMF=false;
 
     reader.readS(); // reserved
@@ -1512,7 +1527,12 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
       } else {
         reader.readC();
       }
-      for (int i=0; i<4; i++) {
+      if (ds.version>=115) {
+        ds.autoSystem=reader.readC();
+      } else {
+        reader.readC();
+      }
+      for (int i=0; i<3; i++) {
         reader.readC();
       }
     }
@@ -1549,6 +1569,7 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
       ds.categoryJ=reader.readString();
     } else {
       ds.systemName=getSongSystemLegacyName(ds,!getConfInt("noMultiSystem",0));
+      ds.autoSystem=true;
     }
 
     // read subsongs
@@ -1774,14 +1795,8 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
 
 #ifdef TA_BIG_ENDIAN
         // convert 16-bit samples to big-endian
-        if (sample->depth==DIV_SAMPLE_DEPTH_16BIT) {
-          unsigned char* sampleBuf=(unsigned char*)sample->getCurBuf();
-          size_t sampleBufLen=sample->getCurBufLen();
-          for (size_t pos=0; pos<sampleBufLen; pos+=2) {
-            sampleBuf[pos]^=sampleBuf[pos+1];
-            sampleBuf[pos+1]^=sampleBuf[pos];
-            sampleBuf[pos]^=sampleBuf[pos+1];
-          }
+        for (int pos=0; pos<length; pos++) {
+          data[pos]=((unsigned short)data[pos]>>8)|((unsigned short)data[pos]<<8);
         }
 #endif
 
@@ -3761,7 +3776,8 @@ SafeWriter* DivEngine::saveFur(bool notPrimary) {
   w->writeC(song.snNoLowPeriods);
   w->writeC(song.delayBehavior);
   w->writeC(song.jumpTreatment);
-  for (int i=0; i<4; i++) {
+  w->writeC(song.autoSystem);
+  for (int i=0; i<3; i++) {
     w->writeC(0);
   }
 
diff --git a/src/engine/instrument.cpp b/src/engine/instrument.cpp
index 85d40e844..59e9774c2 100644
--- a/src/engine/instrument.cpp
+++ b/src/engine/instrument.cpp
@@ -72,9 +72,10 @@ void DivInstrument::putInsData(SafeWriter* w) {
     w->writeC(op.ksr);
 
     w->writeC(op.enable);
+    w->writeC(op.kvs);
 
     // reserved
-    for (int k=0; k<11; k++) {
+    for (int k=0; k<10; k++) {
       w->writeC(0);
     }
   }
@@ -724,8 +725,15 @@ DivDataErrors DivInstrument::readInsData(SafeReader& reader, short version) {
       reader.readC();
     }
 
+    if (version>=115) {
+      op.kvs=reader.readC();
+    } else {
+      op.kvs=2;
+      reader.readC();
+    }
+
     // reserved
-    for (int k=0; k<11; k++) reader.readC();
+    for (int k=0; k<10; k++) reader.readC();
   }
 
   // GB
diff --git a/src/engine/instrument.h b/src/engine/instrument.h
index e95ef0b66..5c3882e3b 100644
--- a/src/engine/instrument.h
+++ b/src/engine/instrument.h
@@ -97,6 +97,7 @@ struct DivInstrumentFM {
     bool enable;
     unsigned char am, ar, dr, mult, rr, sl, tl, dt2, rs, dt, d2r, ssgEnv;
     unsigned char dam, dvb, egt, ksl, sus, vib, ws, ksr; // YMU759/OPL/OPZ
+    unsigned char kvs;
     Operator():
       enable(true),
       am(0),
@@ -118,7 +119,8 @@ struct DivInstrumentFM {
       sus(0),
       vib(0),
       ws(0),
-      ksr(0) {}
+      ksr(0),
+      kvs(2) {}
   } op[4];
   DivInstrumentFM():
     alg(0),
diff --git a/src/engine/platform/arcade.cpp b/src/engine/platform/arcade.cpp
index 6e925c9a0..c86f806e1 100644
--- a/src/engine/platform/arcade.cpp
+++ b/src/engine/platform/arcade.cpp
@@ -151,7 +151,7 @@ void DivPlatformArcade::tick(bool sysTick) {
       for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -231,7 +231,7 @@ void DivPlatformArcade::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -289,7 +289,7 @@ void DivPlatformArcade::tick(bool sysTick) {
       }
       if (m.tl.had) {
         op.tl=127-m.tl.val;
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -390,7 +390,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
       for (int i=0; i<4; i++) {
         unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
         DivInstrumentFM::Operator op=chan[c.chan].state.op[i];
-        if (isOutput[chan[c.chan].state.alg][i]) {
+        if (KVS(c.chan,i)) {
           if (!chan[c.chan].active || chan[c.chan].insChanged) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
           }
@@ -448,7 +448,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
       for (int i=0; i<4; i++) {
         unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
         DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
-        if (isOutput[chan[c.chan].state.alg][i]) {
+        if (KVS(c.chan,i)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -545,7 +545,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
       unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
       DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
       op.tl=c.value2;
-      if (isOutput[chan[c.chan].state.alg][c.value]) {
+      if (KVS(c.chan,c.value)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
@@ -746,7 +746,7 @@ void DivPlatformArcade::forceIns() {
     for (int j=0; j<4; j++) {
       unsigned short baseAddr=chanOffs[i]|opOffs[j];
       DivInstrumentFM::Operator op=chan[i].state.op[j];
-      if (isOutput[chan[i].state.alg][j]) {
+      if (KVS(i,j)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/platform/ay.cpp b/src/engine/platform/ay.cpp
index b99994a41..5ce075ce0 100644
--- a/src/engine/platform/ay.cpp
+++ b/src/engine/platform/ay.cpp
@@ -156,8 +156,8 @@ void DivPlatformAY8910::acquire(short* bufL, short* bufR, size_t start, size_t l
     ay->sound_stream_update(ayBuf,len);
     if (stereo) {
       for (size_t i=0; i<len; i++) {
-        bufL[i+start]=ayBuf[0][i]+ayBuf[1][i];
-        bufR[i+start]=ayBuf[1][i]+ayBuf[2][i];
+        bufL[i+start]=ayBuf[0][i]+ayBuf[1][i]+((ayBuf[2][i]*stereoSep)>>8);
+        bufR[i+start]=((ayBuf[0][i]*stereoSep)>>8)+ayBuf[1][i]+ayBuf[2][i];
       }
     } else {
       for (size_t i=0; i<len; i++) {
@@ -167,7 +167,7 @@ void DivPlatformAY8910::acquire(short* bufL, short* bufR, size_t start, size_t l
     }
     for (int ch=0; ch<3; ch++) {
       for (size_t i=0; i<len; i++) {
-        oscBuf[ch]->data[oscBuf[ch]->needle++]=ayBuf[ch][i];
+        oscBuf[ch]->data[oscBuf[ch]->needle++]=ayBuf[ch][i]<<2;
       }
     }
   }
@@ -803,6 +803,7 @@ void DivPlatformAY8910::setFlags(unsigned int flags) {
   ay->device_reset();
 
   stereo=(flags>>6)&1;
+  stereoSep=(flags>>8)&255;
 }
 
 int DivPlatformAY8910::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
diff --git a/src/engine/platform/ay.h b/src/engine/platform/ay.h
index 134091e0d..e87430e2e 100644
--- a/src/engine/platform/ay.h
+++ b/src/engine/platform/ay.h
@@ -124,6 +124,7 @@ class DivPlatformAY8910: public DivDispatch {
     unsigned char lastBusy;
   
     unsigned char sampleBank;
+    unsigned char stereoSep;
 
     int delay;
 
diff --git a/src/engine/platform/ay8930.cpp b/src/engine/platform/ay8930.cpp
index 8714f2308..913be11b0 100644
--- a/src/engine/platform/ay8930.cpp
+++ b/src/engine/platform/ay8930.cpp
@@ -140,8 +140,8 @@ void DivPlatformAY8930::acquire(short* bufL, short* bufR, size_t start, size_t l
   ay->sound_stream_update(ayBuf,len);
   if (stereo) {
     for (size_t i=0; i<len; i++) {
-      bufL[i+start]=ayBuf[0][i]+ayBuf[1][i];
-      bufR[i+start]=ayBuf[1][i]+ayBuf[2][i];
+      bufL[i+start]=ayBuf[0][i]+ayBuf[1][i]+((ayBuf[2][i]*stereoSep)>>8);
+      bufR[i+start]=((ayBuf[0][i]*stereoSep)>>8)+ayBuf[1][i]+ayBuf[2][i];
     }
   } else {
     for (size_t i=0; i<len; i++) {
@@ -152,7 +152,7 @@ void DivPlatformAY8930::acquire(short* bufL, short* bufR, size_t start, size_t l
 
   for (int ch=0; ch<3; ch++) {
     for (size_t i=0; i<len; i++) {
-      oscBuf[ch]->data[oscBuf[ch]->needle++]=ayBuf[ch][i];
+      oscBuf[ch]->data[oscBuf[ch]->needle++]=ayBuf[ch][i]<<2;
     }
   }
 }
@@ -760,6 +760,7 @@ void DivPlatformAY8930::setFlags(unsigned int flags) {
   }
 
   stereo=(flags>>6)&1;
+  stereoSep=(flags>>8)&255;
 }
 
 int DivPlatformAY8930::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
diff --git a/src/engine/platform/ay8930.h b/src/engine/platform/ay8930.h
index 715671422..3447f5d47 100644
--- a/src/engine/platform/ay8930.h
+++ b/src/engine/platform/ay8930.h
@@ -132,6 +132,7 @@ class DivPlatformAY8930: public DivDispatch {
     DivDispatchOscBuffer* oscBuf[3];
     unsigned char regPool[32];
     unsigned char ayNoiseAnd, ayNoiseOr;
+    unsigned char stereoSep;
     bool bank;
 
     unsigned char sampleBank;
diff --git a/src/engine/platform/fmsharedbase.h b/src/engine/platform/fmsharedbase.h
index 640997392..15baacefa 100644
--- a/src/engine/platform/fmsharedbase.h
+++ b/src/engine/platform/fmsharedbase.h
@@ -23,6 +23,8 @@
 #include "../dispatch.h"
 #include <deque>
 
+#define KVS(x,y) ((chan[x].state.op[y].kvs==2 && isOutput[chan[x].state.alg][y]) || chan[x].state.op[y].kvs==1)
+
 class DivPlatformFMBase: public DivDispatch {
   protected:
     const bool isOutput[8][4]={
diff --git a/src/engine/platform/genesis.cpp b/src/engine/platform/genesis.cpp
index 2a9c2ef3a..6b253f427 100644
--- a/src/engine/platform/genesis.cpp
+++ b/src/engine/platform/genesis.cpp
@@ -254,7 +254,7 @@ void DivPlatformGenesis::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -327,7 +327,7 @@ void DivPlatformGenesis::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -384,7 +384,7 @@ void DivPlatformGenesis::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -501,7 +501,7 @@ void DivPlatformGenesis::muteChannel(int ch, bool mute) {
       if (isMuted[ch]) {
         rWrite(baseAddr+ADDR_TL,127);
       } else {
-        if (isOutput[chan[ch].state.alg][j]) {
+        if (KVS(ch,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[ch].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -614,7 +614,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
         if (isMuted[c.chan]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[c.chan].state.alg][i]) {
+          if (KVS(c.chan,i)) {
             if (!chan[c.chan].active || chan[c.chan].insChanged) {
               rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
             }
@@ -687,7 +687,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
         if (isMuted[c.chan]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[c.chan].state.alg][i]) {
+          if (KVS(c.chan,i)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -860,7 +860,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
       if (isMuted[c.chan]) {
         rWrite(baseAddr+ADDR_TL,127);
       } else {
-        if (isOutput[chan[c.chan].state.alg][c.value]) {
+        if (KVS(c.chan,c.value)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -1051,7 +1051,7 @@ void DivPlatformGenesis::forceIns() {
       if (isMuted[i]) {
         rWrite(baseAddr+ADDR_TL,127);
       } else {
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/platform/genesisext.cpp b/src/engine/platform/genesisext.cpp
index a2df33c41..84b906bec 100644
--- a/src/engine/platform/genesisext.cpp
+++ b/src/engine/platform/genesisext.cpp
@@ -209,7 +209,7 @@ int DivPlatformGenesisExt::dispatch(DivCommand c) {
       op.tl=c.value2;
       if (isOpMuted[ch]) {
         rWrite(baseAddr+0x40,127);
-      } else if (isOutput[chan[2].state.alg][c.value]) {
+      } else if (KVS(2,c.value)) {
         rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[ch].vol&0x7f,127));
       } else {
         rWrite(baseAddr+0x40,op.tl);
@@ -392,7 +392,7 @@ void DivPlatformGenesisExt::muteChannel(int ch, bool mute) {
   if (isOpMuted[ch-2]) {
     rWrite(baseAddr+0x40,127);
     immWrite(baseAddr+0x40,127);
-  } else if (isOutput[chan[2].state.alg][ordch]) {
+  } else if (KVS(2,ordch)) {
     rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[ch-2].vol&0x7f,127));
     immWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[ch-2].vol&0x7f,127));
   } else {
@@ -526,7 +526,7 @@ void DivPlatformGenesisExt::forceIns() {
       if (i==2 && extMode) { // extended channel
         if (isOpMuted[j]) {
           rWrite(baseAddr+0x40,127);
-        } else if (isOutput[chan[i].state.alg][j]) {
+        } else if (KVS(i,j)) {
           rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[j].vol&0x7f,127));
         } else {
           rWrite(baseAddr+0x40,op.tl);
@@ -535,7 +535,7 @@ void DivPlatformGenesisExt::forceIns() {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/platform/opl.cpp b/src/engine/platform/opl.cpp
index fee3c50b9..d3437240b 100644
--- a/src/engine/platform/opl.cpp
+++ b/src/engine/platform/opl.cpp
@@ -26,6 +26,8 @@
 #define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;}
 #define immWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
 
+#define KVSL(x,y) ((chan[x].state.op[orderedOpsL1[ops==4][y]].kvs==2 && isOutputL[ops==4][chan[x].state.alg][y]) || chan[x].state.op[orderedOpsL1[ops==4][y]].kvs==1)
+
 #define CHIP_FREQBASE chipFreqBase
 
 // N = invalid
@@ -138,6 +140,11 @@ const bool isOutputL[2][4][4]={
 
 #undef N
 
+const int orderedOpsL1[2][4]={
+  {0, 1, 0, 1}, // 2-op
+  {0, 2, 1, 3}  // 4-op
+};
+
 const int orderedOpsL[4]={
   0,2,1,3
 };
@@ -288,7 +295,7 @@ void DivPlatformOPL::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
         } else {
-          if (isOutputL[ops==4][chan[i].state.alg][j] || i>melodicChans) {
+          if (KVSL(i,j) || i>melodicChans) {
             rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG(63-op.tl,chan[i].outVol&0x3f,63))|(op.ksl<<6));
           } else {
             rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
@@ -406,7 +413,7 @@ void DivPlatformOPL::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
         } else {
-          if (isOutputL[ops==4][chan[i].state.alg][j] || i>melodicChans) {
+          if (KVSL(i,j) || i>melodicChans) {
             rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG(63-op.tl,chan[i].outVol&0x3f,63))|(op.ksl<<6));
           } else {
             rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
@@ -626,7 +633,7 @@ void DivPlatformOPL::muteChannel(int ch, bool mute) {
     if (isMuted[ch]) {
       rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
     } else {
-      if (isOutputL[ops==4][chan[ch].state.alg][i] || ch>melodicChans) {
+      if (KVSL(ch,i) || ch>melodicChans) {
         rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG(63-op.tl,chan[ch].outVol&0x3f,63))|(op.ksl<<6));
       } else {
         rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
@@ -802,7 +809,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
             if (isMuted[c.chan]) {
               rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
             } else {
-              if (isOutputL[ops==4][chan[c.chan].state.alg][i] || c.chan>melodicChans) {
+              if (KVSL(c.chan,i) || c.chan>melodicChans) {
                 rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG(63-op.tl,chan[c.chan].outVol&0x3f,63))|(op.ksl<<6));
               } else {
                 rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
@@ -910,7 +917,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
         if (isMuted[c.chan]) {
           rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
         } else {
-          if (isOutputL[ops==4][chan[c.chan].state.alg][i] || c.chan>melodicChans) {
+          if (KVSL(c.chan,i) || c.chan>melodicChans) {
             rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG(63-op.tl,chan[c.chan].outVol&0x3f,63))|(op.ksl<<6));
           } else {
             rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
@@ -1059,7 +1066,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
       if (isMuted[c.chan]) {
         rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
       } else {
-        if (isOutputL[ops==4][chan[c.chan].state.alg][c.value] || c.chan>melodicChans) {
+        if (KVSL(c.chan,c.value) || c.chan>melodicChans) {
           rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG(63-op.tl,chan[c.chan].outVol&0x3f,63))|(op.ksl<<6));
         } else {
           rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
@@ -1289,7 +1296,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
           if (isMuted[c.chan]) {
             rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
           } else {
-            if (isOutputL[ops==4][chan[c.chan].state.alg][i] || c.chan>melodicChans) {
+            if (KVSL(c.chan,i) || c.chan>melodicChans) {
               rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG(63-op.tl,chan[c.chan].outVol&0x3f,63))|(op.ksl<<6));
             } else {
               rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
@@ -1306,7 +1313,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
         if (isMuted[c.chan]) {
           rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
         } else {
-          if (isOutputL[ops==4][chan[c.chan].state.alg][c.value] || c.chan>melodicChans) {
+          if (KVSL(c.chan,c.value) || c.chan>melodicChans) {
             rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG(63-op.tl,chan[c.chan].outVol&0x3f,63))|(op.ksl<<6));
           } else {
             rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
@@ -1383,7 +1390,7 @@ void DivPlatformOPL::forceIns() {
       if (isMuted[i]) {
         rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
       } else {
-        if (isOutputL[ops==4][chan[i].state.alg][j] || i>melodicChans) {
+        if (KVSL(i,j) || i>melodicChans) {
           rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG(63-op.tl,chan[i].outVol&0x3f,63))|(op.ksl<<6));
         } else {
           rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
@@ -1432,6 +1439,15 @@ DivMacroInt* DivPlatformOPL::getChanMacroInt(int ch) {
 
 DivDispatchOscBuffer* DivPlatformOPL::getOscBuffer(int ch) {
   if (ch>=18) return NULL;
+  if (oplType==3 && ch<12) {
+    if (chan[ch&(~1)].fourOp) {
+      if (ch&1) {
+        return oscBuf[ch-1];
+      } else {
+        return oscBuf[ch+1];
+      }
+    }
+  }
   return oscBuf[ch];
 }
 
diff --git a/src/engine/platform/sms.cpp b/src/engine/platform/sms.cpp
index d4d77f171..e4d408f7b 100644
--- a/src/engine/platform/sms.cpp
+++ b/src/engine/platform/sms.cpp
@@ -78,7 +78,7 @@ void DivPlatformSMS::acquire_nuked(short* bufL, short* bufR, size_t start, size_
       if (isMuted[i]) {
         oscBuf[i]->data[oscBuf[i]->needle++]=0;
       } else {
-        oscBuf[i]->data[oscBuf[i]->needle++]=sn_nuked.vol_table[sn_nuked.volume_out[i]];
+        oscBuf[i]->data[oscBuf[i]->needle++]=sn_nuked.vol_table[sn_nuked.volume_out[i]]*3;
       }
     }
   }
@@ -104,7 +104,7 @@ void DivPlatformSMS::acquire_mame(short* bufL, short* bufR, size_t start, size_t
       if (isMuted[i]) {
         oscBuf[i]->data[oscBuf[i]->needle++]=0;
       } else {
-        oscBuf[i]->data[oscBuf[i]->needle++]=sn->get_channel_output(i);
+        oscBuf[i]->data[oscBuf[i]->needle++]=sn->get_channel_output(i)*3;
       }
     }
   }
diff --git a/src/engine/platform/tx81z.cpp b/src/engine/platform/tx81z.cpp
index 1c6470fc4..fa29cda60 100644
--- a/src/engine/platform/tx81z.cpp
+++ b/src/engine/platform/tx81z.cpp
@@ -112,7 +112,7 @@ void DivPlatformTX81Z::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -179,7 +179,7 @@ void DivPlatformTX81Z::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -232,7 +232,7 @@ void DivPlatformTX81Z::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -324,7 +324,7 @@ void DivPlatformTX81Z::muteChannel(int ch, bool mute) {
     if (isMuted[ch]) {
       rWrite(baseAddr+ADDR_TL,127);
     } else {
-      if (isOutput[chan[ch].state.alg][i]) {
+      if (KVS(ch,i)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[ch].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
@@ -353,7 +353,7 @@ int DivPlatformTX81Z::dispatch(DivCommand c) {
         if (isMuted[c.chan]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[c.chan].state.alg][i]) {
+          if (KVS(c.chan,i)) {
             if (!chan[c.chan].active || chan[c.chan].insChanged) {
               rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
             }
@@ -419,7 +419,7 @@ int DivPlatformTX81Z::dispatch(DivCommand c) {
         if (isMuted[c.chan]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[c.chan].state.alg][i]) {
+          if (KVS(c.chan,i)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -519,7 +519,7 @@ int DivPlatformTX81Z::dispatch(DivCommand c) {
       if (isMuted[c.chan]) {
         rWrite(baseAddr+ADDR_TL,127);
       } else {
-        if (isOutput[chan[c.chan].state.alg][c.value]) {
+        if (KVS(c.chan,c.value)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -811,7 +811,7 @@ void DivPlatformTX81Z::forceIns() {
       if (isMuted[i]) {
         rWrite(baseAddr+ADDR_TL,127);
       } else {
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/platform/ym2203.cpp b/src/engine/platform/ym2203.cpp
index 1c3488006..13fc014d8 100644
--- a/src/engine/platform/ym2203.cpp
+++ b/src/engine/platform/ym2203.cpp
@@ -220,7 +220,7 @@ void DivPlatformYM2203::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -261,7 +261,7 @@ void DivPlatformYM2203::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -310,7 +310,7 @@ void DivPlatformYM2203::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -427,7 +427,7 @@ int DivPlatformYM2203::dispatch(DivCommand c) {
         if (isMuted[c.chan]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[c.chan].state.alg][i]) {
+          if (KVS(c.chan,i)) {
             if (!chan[c.chan].active || chan[c.chan].insChanged) {
               rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
             }
@@ -487,7 +487,7 @@ int DivPlatformYM2203::dispatch(DivCommand c) {
         if (isMuted[c.chan]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[c.chan].state.alg][i]) {
+          if (KVS(c.chan,i)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -572,7 +572,7 @@ int DivPlatformYM2203::dispatch(DivCommand c) {
       if (isMuted[c.chan]) {
         rWrite(baseAddr+ADDR_TL,127);
       } else {
-        if (isOutput[chan[c.chan].state.alg][c.value]) {
+        if (KVS(c.chan,c.value)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -764,7 +764,7 @@ void DivPlatformYM2203::muteChannel(int ch, bool mute) {
     if (isMuted[ch]) {
       rWrite(baseAddr+ADDR_TL,127);
     } else {
-      if (isOutput[chan[ch].state.alg][j]) {
+      if (KVS(ch,j)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[ch].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
@@ -781,7 +781,7 @@ void DivPlatformYM2203::forceIns() {
       if (isMuted[i]) {
         rWrite(baseAddr+ADDR_TL,127);
       } else {
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/platform/ym2203ext.cpp b/src/engine/platform/ym2203ext.cpp
index c7080d431..527a8be6b 100644
--- a/src/engine/platform/ym2203ext.cpp
+++ b/src/engine/platform/ym2203ext.cpp
@@ -442,7 +442,7 @@ void DivPlatformYM2203Ext::forceIns() {
       if (isMuted[i]) {
         rWrite(baseAddr+ADDR_TL,127);
       } else {
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/platform/ym2608.cpp b/src/engine/platform/ym2608.cpp
index 702d5b399..ff342eb79 100644
--- a/src/engine/platform/ym2608.cpp
+++ b/src/engine/platform/ym2608.cpp
@@ -376,7 +376,7 @@ void DivPlatformYM2608::tick(bool sysTick) {
       for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -421,7 +421,7 @@ void DivPlatformYM2608::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -475,7 +475,7 @@ void DivPlatformYM2608::tick(bool sysTick) {
       }
       if (m.tl.had) {
         op.tl=127-m.tl.val;
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -781,7 +781,7 @@ int DivPlatformYM2608::dispatch(DivCommand c) {
       for (int i=0; i<4; i++) {
         unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
         DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
-        if (isOutput[chan[c.chan].state.alg][i]) {
+        if (KVS(c.chan,i)) {
           if (!chan[c.chan].active || chan[c.chan].insChanged) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
           }
@@ -846,7 +846,7 @@ int DivPlatformYM2608::dispatch(DivCommand c) {
       for (int i=0; i<4; i++) {
         unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
         DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
-        if (isOutput[chan[c.chan].state.alg][i]) {
+        if (KVS(c.chan,i)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -957,7 +957,7 @@ int DivPlatformYM2608::dispatch(DivCommand c) {
       unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
       DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
       op.tl=c.value2;
-      if (isOutput[chan[c.chan].state.alg][c.value]) {
+      if (KVS(c.chan,c.value)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
@@ -1160,7 +1160,7 @@ void DivPlatformYM2608::forceIns() {
     for (int j=0; j<4; j++) {
       unsigned short baseAddr=chanOffs[i]|opOffs[j];
       DivInstrumentFM::Operator& op=chan[i].state.op[j];
-      if (isOutput[chan[i].state.alg][j]) {
+      if (KVS(i,j)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
@@ -1181,6 +1181,11 @@ void DivPlatformYM2608::forceIns() {
   }
   for (int i=9; i<16; i++) {
     chan[i].insChanged=true;
+    if (i>14) { // ADPCM-B
+      immWrite(0x10b,chan[i].outVol);
+    } else {
+      immWrite(0x18+(i-9),isMuted[i]?0:((chan[i].pan<<6)|chan[i].vol));
+    }
   }
 
   ay->forceIns();
diff --git a/src/engine/platform/ym2608ext.cpp b/src/engine/platform/ym2608ext.cpp
index c6d7e03b6..7f49ed9d6 100644
--- a/src/engine/platform/ym2608ext.cpp
+++ b/src/engine/platform/ym2608ext.cpp
@@ -442,7 +442,7 @@ void DivPlatformYM2608Ext::forceIns() {
       if (i==2) { // extended channel
         if (isOpMuted[j]) {
           rWrite(baseAddr+0x40,127);
-        } else if (isOutput[chan[i].state.alg][j]) {
+        } else if (KVS(i,j)) {
           rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[j].vol&0x7f,127));
         } else {
           rWrite(baseAddr+0x40,op.tl);
@@ -451,7 +451,7 @@ void DivPlatformYM2608Ext::forceIns() {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -472,8 +472,13 @@ void DivPlatformYM2608Ext::forceIns() {
       chan[i].freqChanged=true;
     }
   }
-  for (int i=6; i<16; i++) {
+  for (int i=9; i<16; i++) {
     chan[i].insChanged=true;
+    if (i>14) { // ADPCM-B
+      immWrite(0x10b,chan[i].outVol);
+    } else {
+      immWrite(0x18+(i-9),isMuted[i]?0:((chan[i].pan<<6)|chan[i].vol));
+    }
   }
   ay->forceIns();
   ay->flushWrites();
diff --git a/src/engine/platform/ym2610.cpp b/src/engine/platform/ym2610.cpp
index 903993ef0..f80624f4c 100644
--- a/src/engine/platform/ym2610.cpp
+++ b/src/engine/platform/ym2610.cpp
@@ -313,7 +313,7 @@ void DivPlatformYM2610::tick(bool sysTick) {
       for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -358,7 +358,7 @@ void DivPlatformYM2610::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -412,7 +412,7 @@ void DivPlatformYM2610::tick(bool sysTick) {
       }
       if (m.tl.had) {
         op.tl=127-m.tl.val;
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -764,7 +764,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
       for (int i=0; i<4; i++) {
         unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
         DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
-        if (isOutput[chan[c.chan].state.alg][i]) {
+        if (KVS(c.chan,i)) {
           if (!chan[c.chan].active || chan[c.chan].insChanged) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
           }
@@ -829,7 +829,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
       for (int i=0; i<4; i++) {
         unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
         DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
-        if (isOutput[chan[c.chan].state.alg][i]) {
+        if (KVS(c.chan,i)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -947,7 +947,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
       unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
       DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
       op.tl=c.value2;
-      if (isOutput[chan[c.chan].state.alg][c.value]) {
+      if (KVS(c.chan,c.value)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
@@ -1143,7 +1143,7 @@ void DivPlatformYM2610::forceIns() {
     for (int j=0; j<4; j++) {
       unsigned short baseAddr=chanOffs[i]|opOffs[j];
       DivInstrumentFM::Operator& op=chan[i].state.op[j];
-      if (isOutput[chan[i].state.alg][j]) {
+      if (KVS(i,j)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/platform/ym2610b.cpp b/src/engine/platform/ym2610b.cpp
index 8d7a70095..4ee8dea7b 100644
--- a/src/engine/platform/ym2610b.cpp
+++ b/src/engine/platform/ym2610b.cpp
@@ -376,7 +376,7 @@ void DivPlatformYM2610B::tick(bool sysTick) {
       for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -421,7 +421,7 @@ void DivPlatformYM2610B::tick(bool sysTick) {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
@@ -475,7 +475,7 @@ void DivPlatformYM2610B::tick(bool sysTick) {
       }
       if (m.tl.had) {
         op.tl=127-m.tl.val;
-        if (isOutput[chan[i].state.alg][j]) {
+        if (KVS(i,j)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -826,7 +826,7 @@ int DivPlatformYM2610B::dispatch(DivCommand c) {
       for (int i=0; i<4; i++) {
         unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
         DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
-        if (isOutput[chan[c.chan].state.alg][i]) {
+        if (KVS(c.chan,i)) {
           if (!chan[c.chan].active || chan[c.chan].insChanged) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
           }
@@ -891,7 +891,7 @@ int DivPlatformYM2610B::dispatch(DivCommand c) {
       for (int i=0; i<4; i++) {
         unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
         DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
-        if (isOutput[chan[c.chan].state.alg][i]) {
+        if (KVS(c.chan,i)) {
           rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
         } else {
           rWrite(baseAddr+ADDR_TL,op.tl);
@@ -1009,7 +1009,7 @@ int DivPlatformYM2610B::dispatch(DivCommand c) {
       unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
       DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
       op.tl=c.value2;
-      if (isOutput[chan[c.chan].state.alg][c.value]) {
+      if (KVS(c.chan,c.value)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
@@ -1205,7 +1205,7 @@ void DivPlatformYM2610B::forceIns() {
     for (int j=0; j<4; j++) {
       unsigned short baseAddr=chanOffs[i]|opOffs[j];
       DivInstrumentFM::Operator& op=chan[i].state.op[j];
-      if (isOutput[chan[i].state.alg][j]) {
+      if (KVS(i,j)) {
         rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
       } else {
         rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/platform/ym2610bext.cpp b/src/engine/platform/ym2610bext.cpp
index 5360aa3ef..5c8c2c635 100644
--- a/src/engine/platform/ym2610bext.cpp
+++ b/src/engine/platform/ym2610bext.cpp
@@ -438,7 +438,7 @@ void DivPlatformYM2610BExt::forceIns() {
       if (i==2 && extMode) { // extended channel
         if (isOpMuted[j]) {
           rWrite(baseAddr+0x40,127);
-        } else if (isOutput[chan[i].state.alg][j]) {
+        } else if (KVS(i,j)) {
           rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[j].vol&0x7f,127));
         } else {
           rWrite(baseAddr+0x40,op.tl);
@@ -447,7 +447,7 @@ void DivPlatformYM2610BExt::forceIns() {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/platform/ym2610ext.cpp b/src/engine/platform/ym2610ext.cpp
index a2a6c8d1c..22c9ebf90 100644
--- a/src/engine/platform/ym2610ext.cpp
+++ b/src/engine/platform/ym2610ext.cpp
@@ -438,7 +438,7 @@ void DivPlatformYM2610Ext::forceIns() {
       if (i==1 && extMode) { // extended channel
         if (isOpMuted[j]) {
           rWrite(baseAddr+0x40,127);
-        } else if (isOutput[chan[i].state.alg][j]) {
+        } else if (KVS(i,j)) {
           rWrite(baseAddr+0x40,127-VOL_SCALE_LOG(127-op.tl,opChan[j].vol&0x7f,127));
         } else {
           rWrite(baseAddr+0x40,op.tl);
@@ -447,7 +447,7 @@ void DivPlatformYM2610Ext::forceIns() {
         if (isMuted[i]) {
           rWrite(baseAddr+ADDR_TL,127);
         } else {
-          if (isOutput[chan[i].state.alg][j]) {
+          if (KVS(i,j)) {
             rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
           } else {
             rWrite(baseAddr+ADDR_TL,op.tl);
diff --git a/src/engine/playback.cpp b/src/engine/playback.cpp
index 5d6a9d0a7..208920572 100644
--- a/src/engine/playback.cpp
+++ b/src/engine/playback.cpp
@@ -382,7 +382,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
           break;
         case 0xed: // delay
           if (effectVal!=0) {
-            bool comparison=(song.delayBehavior==1)?(effectVal<=nextSpeed):(effectVal<nextSpeed);
+            bool comparison=(song.delayBehavior==1)?(effectVal<=nextSpeed):(effectVal<(nextSpeed*(curSubSong->timeBase+1)));
             if (song.delayBehavior==2) comparison=true;
             if (comparison) {
               chan[i].rowDelay=effectVal+1;
diff --git a/src/engine/song.h b/src/engine/song.h
index 493fc4125..09a89378c 100644
--- a/src/engine/song.h
+++ b/src/engine/song.h
@@ -511,6 +511,7 @@ struct DivSong {
   bool e1e2StopOnSameNote;
   bool brokenPortaArp;
   bool snNoLowPeriods;
+  bool autoSystem;
 
   std::vector<DivInstrument*> ins;
   std::vector<DivWavetable*> wave;
@@ -614,7 +615,8 @@ struct DivSong {
     brokenOutVol(false),
     e1e2StopOnSameNote(false),
     brokenPortaArp(false),
-    snNoLowPeriods(false) {
+    snNoLowPeriods(false),
+    autoSystem(true) {
     for (int i=0; i<32; i++) {
       system[i]=DIV_SYSTEM_NULL;
       systemVol[i]=64;
diff --git a/src/gui/about.cpp b/src/gui/about.cpp
index b763ab97c..7e5dfdf26 100644
--- a/src/gui/about.cpp
+++ b/src/gui/about.cpp
@@ -23,16 +23,17 @@
 
 const char* aboutLine[]={
   "tildearrow",
-  "is proud to present",
+  "is not so happy to present",
   "",
   ("Furnace " DIV_VERSION),
   "",
   "the biggest multi-system chiptune tracker!",
   "featuring DefleMask song compatibility.",
   "",
-  "zero disassembly.",
-  "just clean-room design,",
-  "time and dedication.",
+  "what a mess of a versioning scheme we have...",
+  "I mean it! these pre-releases are like normal releases",
+  "by now but only because I promised you to have SNES in",
+  "0.6pre2 I am doing this whole mess...",
   "",
   "> CREDITS <",
   "",
diff --git a/src/gui/chanOsc.cpp b/src/gui/chanOsc.cpp
index 547e59a17..89b89801b 100644
--- a/src/gui/chanOsc.cpp
+++ b/src/gui/chanOsc.cpp
@@ -63,12 +63,45 @@ float FurnaceGUI::computeGradPos(int type, int chan) {
       return chanOscBright[chan];
       break;
     case GUI_OSCREF_NOTE_TRIGGER:
-      return keyHit[chan]*5.0f;
+      return keyHit1[chan];
       break;
   }
   return 0.0f;
 }
 
+void FurnaceGUI::calcChanOsc() {
+  std::vector<DivDispatchOscBuffer*> oscBufs;
+  std::vector<ChanOscStatus*> oscFFTs;
+  std::vector<int> oscChans;
+
+  int chans=e->getTotalChannelCount();
+  
+  for (int i=0; i<chans; i++) {
+    DivDispatchOscBuffer* buf=e->getOscBuffer(i);
+    if (buf!=NULL && e->curSubSong->chanShow[i]) {
+      // 30ms should be enough
+      int displaySize=(float)(buf->rate)*0.03f;
+      if (e->isRunning()) {
+        float minLevel=1.0f;
+        float maxLevel=-1.0f;
+        unsigned short needlePos=buf->needle;
+        needlePos-=displaySize;
+        for (unsigned short i=0; i<512; i++) {
+          float y=(float)buf->data[(unsigned short)(needlePos+(i*displaySize/512))]/65536.0f;
+          if (minLevel>y) minLevel=y;
+          if (maxLevel<y) maxLevel=y;
+        }
+        float estimate=pow(maxLevel-minLevel,0.5f);
+        if (estimate>1.0f) estimate=1.0f;
+        chanOscVol[i]=MAX(chanOscVol[i]*0.87f,estimate);
+      }
+    } else {
+      chanOscVol[i]=MAX(chanOscVol[i]*0.87f,0.0f);
+    }
+    if (chanOscVol[i]<0.00001f) chanOscVol[i]=0.0f;
+  }
+}
+
 void FurnaceGUI::drawChanOsc() {
   if (nextWindow==GUI_WINDOW_CHAN_OSC) {
     chanOscOpen=true;
@@ -361,7 +394,6 @@ void FurnaceGUI::drawChanOsc() {
                 if (maxLevel<y) maxLevel=y;
               }
               dcOff=(minLevel+maxLevel)*0.5f;
-              chanOscVol[ch]=MAX(chanOscVol[ch]*0.87f,maxLevel-minLevel);
               for (unsigned short i=0; i<512; i++) {
                 float x=(float)i/512.0f;
                 float y=(float)buf->data[(unsigned short)(needlePos+(i*displaySize/512))]/65536.0f;
diff --git a/src/gui/doAction.cpp b/src/gui/doAction.cpp
index 93f02a24a..41771dd44 100644
--- a/src/gui/doAction.cpp
+++ b/src/gui/doAction.cpp
@@ -645,6 +645,7 @@ void FurnaceGUI::doAction(int what) {
       } else {
         wantScrollList=true;
         MARK_MODIFIED;
+        RESET_WAVE_MACRO_ZOOM;
       }
       break;
     case GUI_ACTION_WAVE_LIST_DUPLICATE:
@@ -657,6 +658,7 @@ void FurnaceGUI::doAction(int what) {
           (*e->song.wave[curWave])=(*e->song.wave[prevWave]);
           wantScrollList=true;
           MARK_MODIFIED;
+          RESET_WAVE_MACRO_ZOOM;
         }
       }
       break;
@@ -1329,6 +1331,7 @@ void FurnaceGUI::doAction(int what) {
           }
           nextWindow=GUI_WINDOW_WAVE_EDIT;
           MARK_MODIFIED;
+          RESET_WAVE_MACRO_ZOOM;
         }
       }
       break;
diff --git a/src/gui/editing.cpp b/src/gui/editing.cpp
index 201c9be26..153d70da3 100644
--- a/src/gui/editing.cpp
+++ b/src/gui/editing.cpp
@@ -405,7 +405,7 @@ void FurnaceGUI::doCopy(bool cut) {
   }
 }
 
-void FurnaceGUI::doPaste(PasteMode mode) {
+void FurnaceGUI::doPaste(PasteMode mode, int arg) {
   finishSelection();
   prepareUndo(GUI_UNDO_PATTERN_PASTE);
   char* clipText=SDL_GetClipboardText();
@@ -481,14 +481,16 @@ void FurnaceGUI::doPaste(PasteMode mode) {
           continue;
         }
 
-        if ((mode==GUI_PASTE_MODE_MIX_BG || mode==GUI_PASTE_MODE_MIX_FG) && strcmp(note,"...")==0) {
+        if ((mode==GUI_PASTE_MODE_MIX_BG || mode==GUI_PASTE_MODE_MIX_FG ||
+             mode==GUI_PASTE_MODE_INS_BG || mode==GUI_PASTE_MODE_INS_FG) && strcmp(note,"...")==0) {
           // do nothing.
         } else {
-          if (mode!=GUI_PASTE_MODE_MIX_BG || (pat->data[j][0]==0 && pat->data[j][1]==0)) {
+          if (!(mode==GUI_PASTE_MODE_MIX_BG || mode==GUI_PASTE_MODE_INS_BG) || (pat->data[j][0]==0 && pat->data[j][1]==0)) {
             if (!decodeNote(note,pat->data[j][0],pat->data[j][1])) {
               invalidData=true;
               break;
             }
+            if (mode==GUI_PASTE_MODE_INS_BG || mode==GUI_PASTE_MODE_INS_FG) pat->data[j][2]=arg;
           }
         }
       } else {
@@ -505,7 +507,7 @@ void FurnaceGUI::doPaste(PasteMode mode) {
         note[2]=0;
 
         if (iFine==1) {
-          if (!opMaskPaste.ins) {
+          if (!opMaskPaste.ins || mode==GUI_PASTE_MODE_INS_BG || mode==GUI_PASTE_MODE_INS_FG) {
             iFine++;
             continue;
           }
@@ -527,7 +529,8 @@ void FurnaceGUI::doPaste(PasteMode mode) {
         }
 
         if (strcmp(note,"..")==0) {
-          if (!(mode==GUI_PASTE_MODE_MIX_BG || mode==GUI_PASTE_MODE_MIX_FG)) {
+          if (!(mode==GUI_PASTE_MODE_MIX_BG || mode==GUI_PASTE_MODE_MIX_FG ||
+                mode==GUI_PASTE_MODE_INS_BG || mode==GUI_PASTE_MODE_INS_FG)) {
             pat->data[j][iFine+1]=-1;
           }
         } else {
@@ -536,7 +539,7 @@ void FurnaceGUI::doPaste(PasteMode mode) {
             invalidData=true;
             break;
           }
-          if (mode!=GUI_PASTE_MODE_MIX_BG || pat->data[j][iFine+1]==-1) {
+          if (!(mode==GUI_PASTE_MODE_MIX_BG || mode==GUI_PASTE_MODE_INS_BG) || pat->data[j][iFine+1]==-1) {
             if (iFine<(3+e->curPat[iCoarse].effectCols*2)) pat->data[j][iFine+1]=val;
           }
         }
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 5153e1f6a..a57ccf396 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -584,13 +584,117 @@ void FurnaceGUI::updateWindowTitle() {
   if (sdlWin!=NULL) SDL_SetWindowTitle(sdlWin,title.c_str());
 }
 
+void FurnaceGUI::autoDetectSystem() {
+  std::map<DivSystem,int> sysCountMap;
+  for (int i=0; i<e->song.systemLen; i++) {
+    try {
+      sysCountMap.at(e->song.system[i])++;
+    } catch (std::exception& ex) {
+      sysCountMap[e->song.system[i]]=1;
+    }
+  }
+
+  logV("sysCountMap:");
+  for (std::pair<DivSystem,int> k: sysCountMap) {
+    logV("%s: %d",e->getSystemName(k.first),k.second);
+  }
+
+  bool isMatch=false;
+  std::map<DivSystem,int> defCountMap;
+  for (FurnaceGUISysCategory& i: sysCategories) {
+    for (FurnaceGUISysDef& j: i.systems) {
+      defCountMap.clear();
+      for (size_t k=0; k<j.definition.size(); k+=4) {
+        if (j.definition[k]==0) break;
+        try {
+          defCountMap.at((DivSystem)j.definition[k])++;
+        } catch (std::exception& ex) {
+          defCountMap[(DivSystem)j.definition[k]]=1;
+        }
+      }
+      if (defCountMap.size()!=sysCountMap.size()) continue;
+      isMatch=true;
+      logV("trying on defCountMap: %s",j.name);
+      for (std::pair<DivSystem,int> k: defCountMap) {
+        logV("- %s: %d",e->getSystemName(k.first),k.second);
+      }
+      for (std::pair<DivSystem,int> k: defCountMap) {
+        try {
+          if (sysCountMap.at(k.first)!=k.second) {
+            isMatch=false;
+            break;
+          }
+        } catch (std::exception& ex) {
+          isMatch=false;
+          break;
+        }
+      }
+      if (isMatch) {
+        logV("match found!");
+        e->song.systemName=j.name;
+        break;
+      }
+    }
+    if (isMatch) break;
+  }
+
+  if (!isMatch) {
+    bool isFirst=true;
+    e->song.systemName="";
+    for (std::pair<DivSystem,int> k: sysCountMap) {
+      if (!isFirst) e->song.systemName+=" + ";
+      if (k.second>1) {
+        e->song.systemName+=fmt::sprintf("%d×",k.second);
+      }
+      if (k.first==DIV_SYSTEM_N163) {
+        e->song.systemName+=settings.c163Name;
+      } else {
+        e->song.systemName+=e->getSystemName(k.first);
+      }
+      isFirst=false;
+    }
+  }
+}
+
+ImVec4 FurnaceGUI::channelColor(int ch) {
+  switch (settings.channelColors) {
+    case 0:
+      return uiColors[GUI_COLOR_CHANNEL_BG];
+      break;
+    case 1:
+      return uiColors[GUI_COLOR_CHANNEL_FM+e->getChannelType(ch)];
+      break;
+    case 2:
+      return uiColors[GUI_COLOR_INSTR_STD+e->getPreferInsType(ch)];
+      break;
+  }
+  // invalid
+  return uiColors[GUI_COLOR_TEXT];
+}
+
+ImVec4 FurnaceGUI::channelTextColor(int ch) {
+  switch (settings.channelTextColors) {
+    case 0:
+      return uiColors[GUI_COLOR_CHANNEL_FG];
+      break;
+    case 1:
+      return uiColors[GUI_COLOR_CHANNEL_FM+e->getChannelType(ch)];
+      break;
+    case 2:
+      return uiColors[GUI_COLOR_INSTR_STD+e->getPreferInsType(ch)];
+      break;
+  }
+  // invalid
+  return uiColors[GUI_COLOR_TEXT];
+}
+
 const char* defaultLayout="[Window][DockSpaceViewport_11111111]\n\
 Pos=0,24\n\
-Size=1280,731\n\
+Size=1280,776\n\
 Collapsed=0\n\
 \n\
 [Window][Debug##Default]\n\
-Pos=54,0\n\
+Pos=54,19\n\
 Size=400,400\n\
 Collapsed=0\n\
 \n\
@@ -601,9 +705,9 @@ Collapsed=0\n\
 \n\
 [Window][Song Information]\n\
 Pos=978,24\n\
-Size=302,217\n\
+Size=302,179\n\
 Collapsed=0\n\
-DockId=0x00000004,0\n\
+DockId=0x0000000F,0\n\
 \n\
 [Window][Orders]\n\
 Pos=0,24\n\
@@ -615,7 +719,7 @@ DockId=0x00000007,0\n\
 Pos=653,24\n\
 Size=323,217\n\
 Collapsed=0\n\
-DockId=0x00000006,2\n\
+DockId=0x00000006,0\n\
 \n\
 [Window][Wavetables]\n\
 Pos=653,24\n\
@@ -627,13 +731,13 @@ DockId=0x00000006,1\n\
 Pos=653,24\n\
 Size=323,217\n\
 Collapsed=0\n\
-DockId=0x00000006,0\n\
+DockId=0x00000006,2\n\
 \n\
 [Window][Pattern]\n\
 Pos=0,243\n\
-Size=1246,512\n\
+Size=1246,557\n\
 Collapsed=0\n\
-DockId=0x0000000B,0\n\
+DockId=0x00000013,0\n\
 \n\
 [Window][Instrument Editor]\n\
 Pos=372,102\n\
@@ -642,7 +746,7 @@ Collapsed=0\n\
 \n\
 [Window][Warning]\n\
 Pos=481,338\n\
-Size=346,71\n\
+Size=264,86\n\
 Collapsed=0\n\
 \n\
 [Window][Sample Editor]\n\
@@ -675,8 +779,8 @@ Size=514,71\n\
 Collapsed=0\n\
 \n\
 [Window][Mixer]\n\
-Pos=63,55\n\
-Size=450,215\n\
+Pos=429,198\n\
+Size=453,355\n\
 Collapsed=0\n\
 \n\
 [Window][Oscilloscope]\n\
@@ -687,7 +791,7 @@ DockId=0x0000000E,0\n\
 \n\
 [Window][Volume Meter]\n\
 Pos=1248,243\n\
-Size=32,512\n\
+Size=32,557\n\
 Collapsed=0\n\
 DockId=0x0000000C,0\n\
 \n\
@@ -762,9 +866,10 @@ Size=368,449\n\
 Collapsed=0\n\
 \n\
 [Window][Register View]\n\
-Pos=847,180\n\
-Size=417,393\n\
+Pos=829,243\n\
+Size=417,557\n\
 Collapsed=0\n\
+DockId=0x00000014,0\n\
 \n\
 [Window][New Song]\n\
 Pos=267,110\n\
@@ -783,8 +888,40 @@ Size=304,40\n\
 Collapsed=0\n\
 DockId=0x0000000A,0\n\
 \n\
+[Window][Subsongs]\n\
+Pos=978,205\n\
+Size=302,36\n\
+Collapsed=0\n\
+DockId=0x00000010,0\n\
+\n\
+[Window][Oscilloscope (per-channel)]\n\
+Pos=1095,243\n\
+Size=151,557\n\
+Collapsed=0\n\
+DockId=0x00000012,0\n\
+\n\
+[Window][Piano]\n\
+Pos=177,669\n\
+Size=922,118\n\
+Collapsed=0\n\
+\n\
+[Window][Log Viewer]\n\
+Pos=60,60\n\
+Size=541,637\n\
+Collapsed=0\n\
+\n\
+[Window][Pattern Manager]\n\
+Pos=60,60\n\
+Size=1099,366\n\
+Collapsed=0\n\
+\n\
+[Window][Chip Manager]\n\
+Pos=60,60\n\
+Size=490,407\n\
+Collapsed=0\n\
+\n\
 [Docking][Data]\n\
-DockSpace             ID=0x8B93E3BD Window=0xA787BDB4 Pos=0,24 Size=1280,731 Split=Y Selected=0x6C01C512\n\
+DockSpace             ID=0x8B93E3BD Window=0xA787BDB4 Pos=0,24 Size=1280,776 Split=Y Selected=0x6C01C512\n\
   DockNode            ID=0x00000001 Parent=0x8B93E3BD SizeRef=1280,217 Split=X Selected=0xF3094A52\n\
     DockNode          ID=0x00000003 Parent=0x00000001 SizeRef=976,231 Split=X Selected=0x65CC51DC\n\
       DockNode        ID=0x00000007 Parent=0x00000003 SizeRef=345,231 HiddenTabBar=1 Selected=0x8F5BFC9A\n\
@@ -795,10 +932,17 @@ DockSpace             ID=0x8B93E3BD Window=0xA787BDB4 Pos=0,24 Size=1280,731 Spl
             DockNode  ID=0x0000000E Parent=0x00000009 SizeRef=292,105 HiddenTabBar=1 Selected=0x6D682373\n\
           DockNode    ID=0x0000000A Parent=0x00000005 SizeRef=292,40 HiddenTabBar=1 Selected=0x0DE44CFF\n\
         DockNode      ID=0x00000006 Parent=0x00000008 SizeRef=323,406 Selected=0xD2AD486B\n\
-    DockNode          ID=0x00000004 Parent=0x00000001 SizeRef=302,231 Selected=0x60B9D088\n\
+    DockNode          ID=0x00000004 Parent=0x00000001 SizeRef=302,231 Split=Y Selected=0x60B9D088\n\
+      DockNode        ID=0x0000000F Parent=0x00000004 SizeRef=302,179 Selected=0x60B9D088\n\
+      DockNode        ID=0x00000010 Parent=0x00000004 SizeRef=302,36 HiddenTabBar=1 Selected=0x723A6369\n\
   DockNode            ID=0x00000002 Parent=0x8B93E3BD SizeRef=1280,512 Split=X Selected=0x6C01C512\n\
-    DockNode          ID=0x0000000B Parent=0x00000002 SizeRef=1246,503 CentralNode=1 HiddenTabBar=1 Selected=0xB9ADD0D5\n\
-    DockNode          ID=0x0000000C Parent=0x00000002 SizeRef=32,503 HiddenTabBar=1 Selected=0x644DA2C1\n\n";
+    DockNode          ID=0x0000000B Parent=0x00000002 SizeRef=1246,503 Split=X Selected=0xB9ADD0D5\n\
+      DockNode        ID=0x00000011 Parent=0x0000000B SizeRef=1093,557 Split=X Selected=0xB9ADD0D5\n\
+        DockNode      ID=0x00000013 Parent=0x00000011 SizeRef=827,557 CentralNode=1 HiddenTabBar=1 Selected=0xB9ADD0D5\n\
+        DockNode      ID=0x00000014 Parent=0x00000011 SizeRef=417,557 Selected=0x425428FB\n\
+      DockNode        ID=0x00000012 Parent=0x0000000B SizeRef=151,557 HiddenTabBar=1 Selected=0x4C07BC58\n\
+    DockNode          ID=0x0000000C Parent=0x00000002 SizeRef=32,503 HiddenTabBar=1 Selected=0x644DA2C1\n";
+
 
 void FurnaceGUI::prepareLayout() {
   FILE* check;
@@ -2076,6 +2220,30 @@ void FurnaceGUI::editOptions(bool topMenu) {
   if (ImGui::BeginMenu("paste special...")) {
     if (ImGui::MenuItem("paste mix",BIND_FOR(GUI_ACTION_PAT_PASTE_MIX))) doPaste(GUI_PASTE_MODE_MIX_FG);
     if (ImGui::MenuItem("paste mix (background)",BIND_FOR(GUI_ACTION_PAT_PASTE_MIX_BG))) doPaste(GUI_PASTE_MODE_MIX_BG);
+    if (ImGui::BeginMenu("paste with ins (foreground)")) {
+      if (e->song.ins.empty()) {
+        ImGui::Text("no instruments available");
+      }
+      for (size_t i=0; i<e->song.ins.size(); i++) {
+        snprintf(id,4095,"%.2X: %s",(int)i,e->song.ins[i]->name.c_str());
+        if (ImGui::MenuItem(id)) {
+          doPaste(GUI_PASTE_MODE_INS_FG,i);
+        }
+      }
+      ImGui::EndMenu();
+    }
+    if (ImGui::BeginMenu("paste with ins (background)")) {
+      if (e->song.ins.empty()) {
+        ImGui::Text("no instruments available");
+      }
+      for (size_t i=0; i<e->song.ins.size(); i++) {
+        snprintf(id,4095,"%.2X: %s",(int)i,e->song.ins[i]->name.c_str());
+        if (ImGui::MenuItem(id)) {
+          doPaste(GUI_PASTE_MODE_INS_BG,i);
+        }
+      }
+      ImGui::EndMenu();
+    }
     if (ImGui::MenuItem("paste flood",BIND_FOR(GUI_ACTION_PAT_PASTE_FLOOD))) doPaste(GUI_PASTE_MODE_FLOOD);
     if (ImGui::MenuItem("paste overflow",BIND_FOR(GUI_ACTION_PAT_PASTE_OVERFLOW))) doPaste(GUI_PASTE_MODE_OVERFLOW);
     ImGui::EndMenu();
@@ -3230,6 +3398,9 @@ bool FurnaceGUI::loop() {
               showError("cannot add chip! ("+e->getLastError()+")");
             }
             ImGui::CloseCurrentPopup();
+            if (e->song.autoSystem) {
+              autoDetectSystem();
+            }
             updateWindowTitle();
           }
           ImGui::EndMenu();
@@ -3250,6 +3421,9 @@ bool FurnaceGUI::loop() {
               DivSystem picked=systemPicker();
               if (picked!=DIV_SYSTEM_NULL) {
                 e->changeSystem(i,picked,preserveChanPos);
+                if (e->song.autoSystem) {
+                  autoDetectSystem();
+                }
                 updateWindowTitle();
                 ImGui::CloseCurrentPopup();
               }
@@ -3265,6 +3439,10 @@ bool FurnaceGUI::loop() {
               if (!e->removeSystem(i,preserveChanPos)) {
                 showError("cannot remove chip! ("+e->getLastError()+")");
               }
+              if (e->song.autoSystem) {
+                autoDetectSystem();
+                updateWindowTitle();
+              }
             }
           }
           ImGui::EndMenu();
@@ -3439,6 +3617,8 @@ bool FurnaceGUI::loop() {
       ImGui::EndMainMenuBar();
     }
 
+    calcChanOsc();
+
     if (mobileUI) {
       globalWinFlags=ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoBringToFrontOnFocus;
       //globalWinFlags=ImGuiWindowFlags_NoTitleBar;
@@ -3884,6 +4064,7 @@ bool FurnaceGUI::loop() {
                   showError("cannot load wavetable! ("+e->getLastError()+")");
                 } else {
                   MARK_MODIFIED;
+                  RESET_WAVE_MACRO_ZOOM;
                 }
               }
               break;
@@ -4380,6 +4561,10 @@ bool FurnaceGUI::loop() {
         case GUI_WARN_SYSTEM_DEL:
           if (ImGui::Button("Yes")) {
             e->removeSystem(sysToDelete,preserveChanPos);
+            if (e->song.autoSystem) {
+              autoDetectSystem();
+              updateWindowTitle();
+            }
             ImGui::CloseCurrentPopup();
           }
           ImGui::SameLine();
@@ -5034,6 +5219,7 @@ FurnaceGUI::FurnaceGUI():
   macroPointSize(16),
   waveEditStyle(0),
   mobileMenuPos(0.0f),
+  autoButtonSize(0.0f),
   curSysSection(NULL),
   pendingRawSampleDepth(8),
   pendingRawSampleChannels(1),
@@ -5421,6 +5607,9 @@ FurnaceGUI::FurnaceGUI():
   waveGenFMCon2[0]=true;
   waveGenFMCon3[0]=true;
 
+  memset(keyHit,0,sizeof(float)*DIV_MAX_CHANS);
+  memset(keyHit1,0,sizeof(float)*DIV_MAX_CHANS);
+
   memset(pianoKeyHit,0,sizeof(float)*180);
   memset(pianoKeyPressed,0,sizeof(bool)*180);
 
diff --git a/src/gui/gui.h b/src/gui/gui.h
index 6145c56f9..cb481f122 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -47,6 +47,12 @@
 #define MARK_MODIFIED modified=true;
 #define WAKE_UP drawHalt=16;
 
+#define RESET_WAVE_MACRO_ZOOM \
+  for (DivInstrument* _wi: e->song.ins) { \
+    _wi->std.waveMacro.vZoom=-1; \
+    _wi->std.waveMacro.vScroll=-1; \
+  }
+
 #define BIND_FOR(x) getKeyName(actionKeys[x],true).c_str()
 
 // TODO:
@@ -163,6 +169,8 @@ enum FurnaceGUIColors {
   GUI_COLOR_INSTR_RF5C68,
   GUI_COLOR_INSTR_UNKNOWN,
 
+  GUI_COLOR_CHANNEL_BG,
+  GUI_COLOR_CHANNEL_FG,
   GUI_COLOR_CHANNEL_FM,
   GUI_COLOR_CHANNEL_PULSE,
   GUI_COLOR_CHANNEL_NOISE,
@@ -596,7 +604,9 @@ enum PasteMode {
   GUI_PASTE_MODE_MIX_FG,
   GUI_PASTE_MODE_MIX_BG,
   GUI_PASTE_MODE_FLOOD,
-  GUI_PASTE_MODE_OVERFLOW
+  GUI_PASTE_MODE_OVERFLOW,
+  GUI_PASTE_MODE_INS_FG,
+  GUI_PASTE_MODE_INS_BG
 };
 
 #define FURKMOD_CTRL (1U<<31)
@@ -1018,7 +1028,7 @@ class FurnaceGUI {
   int drawHalt;
   int macroPointSize;
   int waveEditStyle;
-  float mobileMenuPos;
+  float mobileMenuPos, autoButtonSize;
   const int* curSysSection;
 
   String pendingRawSample;
@@ -1178,6 +1188,8 @@ class FurnaceGUI {
     int channelStyle;
     int channelVolStyle;
     int channelFeedbackStyle;
+    int channelFont;
+    int channelTextCenter;
     int maxRecentFile;
     unsigned int maxUndoSteps;
     String mainFontPath;
@@ -1296,9 +1308,11 @@ class FurnaceGUI {
       saveUnusedPatterns(0),
       channelColors(1),
       channelTextColors(0),
-      channelStyle(0),
+      channelStyle(1),
       channelVolStyle(0),
       channelFeedbackStyle(1),
+      channelFont(1),
+      channelTextCenter(1),
       maxRecentFile(10),
       maxUndoSteps(100),
       mainFontPath(""),
@@ -1556,6 +1570,7 @@ class FurnaceGUI {
 
   // visualizer
   float keyHit[DIV_MAX_CHANS];
+  float keyHit1[DIV_MAX_CHANS];
   int lastIns[DIV_MAX_CHANS];
 
   // log window
@@ -1596,6 +1611,7 @@ class FurnaceGUI {
   void drawFMEnv(unsigned char tl, unsigned char ar, unsigned char dr, unsigned char d2r, unsigned char rr, unsigned char sl, unsigned char sus, unsigned char egt, unsigned char algOrGlobalSus, float maxTl, float maxArDr, const ImVec2& size, unsigned short instType);
   void drawGBEnv(unsigned char vol, unsigned char len, unsigned char sLen, bool dir, const ImVec2& size);
   void drawSysConf(int chan, DivSystem type, unsigned int& flags, bool modifyOnChange);
+  void kvsConfig(DivInstrument* ins);
 
   // these ones offer ctrl-wheel fine value changes.
   bool CWSliderScalar(const char* label, ImGuiDataType data_type, void* p_data, const void* p_min, const void* p_max, const char* format=NULL, ImGuiSliderFlags flags=0);
@@ -1605,9 +1621,13 @@ class FurnaceGUI {
   bool CWVSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format="%d", ImGuiSliderFlags flags=0);
 
   void updateWindowTitle();
+  void autoDetectSystem();
   void prepareLayout();
+  ImVec4 channelColor(int ch);
+  ImVec4 channelTextColor(int ch);
 
   void readOsc();
+  void calcChanOsc();
 
   void pushAccentColors(const ImVec4& one, const ImVec4& two, const ImVec4& border, const ImVec4& borderShadow);
   void popAccentColors();
@@ -1699,7 +1719,7 @@ class FurnaceGUI {
   void doInsert();
   void doTranspose(int amount, OperationMask& mask);
   void doCopy(bool cut);
-  void doPaste(PasteMode mode=GUI_PASTE_MODE_NORMAL);
+  void doPaste(PasteMode mode=GUI_PASTE_MODE_NORMAL, int arg=0);
   void doChangeIns(int ins);
   void doInterpolate();
   void doFade(int p0, int p1, bool mode);
diff --git a/src/gui/guiConst.cpp b/src/gui/guiConst.cpp
index 0deac391d..b4b18efe4 100644
--- a/src/gui/guiConst.cpp
+++ b/src/gui/guiConst.cpp
@@ -796,6 +796,8 @@ const FurnaceGUIColorDef guiColors[GUI_COLOR_MAX]={
   D(GUI_COLOR_INSTR_RF5C68,"",ImVec4(1.0f,0.5f,0.5f,1.0f)),
   D(GUI_COLOR_INSTR_UNKNOWN,"",ImVec4(0.3f,0.3f,0.3f,1.0f)),
 
+  D(GUI_COLOR_CHANNEL_BG,"",ImVec4(0.4f,0.6f,0.8f,1.0f)),
+  D(GUI_COLOR_CHANNEL_FG,"",ImVec4(1.0f,1.0f,1.0f,1.0f)),
   D(GUI_COLOR_CHANNEL_FM,"",ImVec4(0.2f,0.8f,1.0f,1.0f)),
   D(GUI_COLOR_CHANNEL_PULSE,"",ImVec4(0.4f,1.0f,0.2f,1.0f)),
   D(GUI_COLOR_CHANNEL_NOISE,"",ImVec4(0.8f,0.8f,0.8f,1.0f)),
diff --git a/src/gui/insEdit.cpp b/src/gui/insEdit.cpp
index 2c350e235..9d61fff6b 100644
--- a/src/gui/insEdit.cpp
+++ b/src/gui/insEdit.cpp
@@ -1211,6 +1211,46 @@ inline bool enBit30(const int val) {
   return false;
 }
 
+
+void FurnaceGUI::kvsConfig(DivInstrument* ins) {
+  if (ImGui::IsItemHovered()) {
+    ImGui::SetTooltip("(click to configure KVS)");
+  }
+  int opCount=4;
+  if (ins->type==DIV_INS_OPLL) opCount=2;
+  if (ins->type==DIV_INS_OPL) opCount=(ins->fm.ops==4)?4:2;
+  if (ImGui::BeginPopupContextItem("IKVSOpt",ImGuiPopupFlags_MouseButtonLeft)) {
+    ImGui::Text("operator level changes with volume?");
+    if (ImGui::BeginTable("KVSTable",4,ImGuiTableFlags_BordersInner)) {
+      ImGui::TableSetupColumn("c0",ImGuiTableColumnFlags_WidthFixed);
+      ImGui::TableSetupColumn("c1",ImGuiTableColumnFlags_WidthStretch);
+      ImGui::TableSetupColumn("c2",ImGuiTableColumnFlags_WidthFixed);
+      ImGui::TableSetupColumn("c3",ImGuiTableColumnFlags_WidthStretch);
+      for (int i=0; i<4; i++) {
+        int o=(opCount==4)?orderedOps[i]:i;
+        if (!(i&1)) ImGui::TableNextRow();
+        const char* label="AUTO##OPKVS";
+        if (ins->fm.op[o].kvs==0) {
+          label="NO##OPKVS";
+        } else if (ins->fm.op[o].kvs==1) {
+          label="YES##OPKVS";
+        }
+        ImGui::TableNextColumn();
+        ImGui::Text("%d",i+1);
+        ImGui::TableNextColumn();
+        ImGui::PushID(o);
+        if (ImGui::Button(label,ImVec2(ImGui::GetContentRegionAvail().x,0.0f))) {
+          if (++ins->fm.op[o].kvs>2) ins->fm.op[o].kvs=0;
+          PARAMETER;
+        }
+        ImGui::PopID();
+      }
+      ImGui::EndTable();
+    }
+    ImGui::EndPopup();
+  }
+}
+
 void FurnaceGUI::drawMacros(std::vector<FurnaceGUIMacroDesc>& macros) {
   float asFloat[256];
   int asInt[256];
@@ -1769,6 +1809,7 @@ void FurnaceGUI::drawInsEdit() {
                   P(CWSliderScalar(FM_NAME(FM_AMS),ImGuiDataType_U8,&ins->fm.ams,&_ZERO,&_THREE)); rightClickable
                   ImGui::TableNextColumn();
                   drawAlgorithm(ins->fm.alg,FM_ALGS_4OP,ImVec2(ImGui::GetContentRegionAvail().x,48.0*dpiScale));
+                  kvsConfig(ins);
                   break;
                 case DIV_INS_OPZ:
                   ImGui::TableNextColumn();
@@ -1781,6 +1822,8 @@ void FurnaceGUI::drawInsEdit() {
                   P(CWSliderScalar(FM_NAME(FM_AMS2),ImGuiDataType_U8,&ins->fm.ams2,&_ZERO,&_THREE)); rightClickable
                   ImGui::TableNextColumn();
                   drawAlgorithm(ins->fm.alg,FM_ALGS_4OP,ImVec2(ImGui::GetContentRegionAvail().x,48.0*dpiScale));
+                  kvsConfig(ins);
+
                   if (ImGui::Button("Request from TX81Z")) {
                     doAction(GUI_ACTION_TX81Z_REQUEST);
                   }
@@ -1813,6 +1856,7 @@ void FurnaceGUI::drawInsEdit() {
                   }
                   ImGui::TableNextColumn();
                   drawAlgorithm(ins->fm.alg&algMax,fourOp?FM_ALGS_4OP_OPL:FM_ALGS_2OP_OPL,ImVec2(ImGui::GetContentRegionAvail().x,48.0*dpiScale));
+                  kvsConfig(ins);
                   break;
                 }
                 case DIV_INS_OPLL: {
@@ -1837,6 +1881,7 @@ void FurnaceGUI::drawInsEdit() {
                   ImGui::EndDisabled();
                   ImGui::TableNextColumn();
                   drawAlgorithm(0,FM_ALGS_2OP_OPL,ImVec2(ImGui::GetContentRegionAvail().x,24.0*dpiScale));
+
                   ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
 
                   bool isPresent[4];
@@ -2928,6 +2973,14 @@ void FurnaceGUI::drawInsEdit() {
                       }
                     }
 
+                    if (ins->type==DIV_INS_OPZ) {
+                      ImGui::SameLine();
+                      bool fixedOn=op.egt;
+                      if (ImGui::Checkbox("Fixed",&fixedOn)) { PARAMETER
+                        op.egt=fixedOn;
+                      }
+                    }
+
                     //52.0 controls vert scaling; default 96
                     drawFMEnv(op.tl&maxTl,op.ar&maxArDr,op.dr&maxArDr,(ins->type==DIV_INS_OPL || ins->type==DIV_INS_OPL_DRUMS || ins->type==DIV_INS_OPLL)?((op.rr&15)*2):op.d2r&31,op.rr&15,op.sl&15,op.sus,op.ssgEnv&8,ins->fm.alg,maxTl,maxArDr,ImVec2(ImGui::GetContentRegionAvail().x,52.0*dpiScale),ins->type);
                     //P(CWSliderScalar(FM_NAME(FM_AR),ImGuiDataType_U8,&op.ar,&_ZERO,&_THIRTY_ONE)); rightClickable
@@ -3012,23 +3065,85 @@ void FurnaceGUI::drawInsEdit() {
                         ImGui::Text("%s",FM_NAME(FM_KSL));
                       }
 
-                      ImGui::TableNextRow();
-                      ImGui::TableNextColumn();
-                      ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
-                      P(CWSliderScalar(FM_NAME(FM_MULT),ImGuiDataType_U8,&op.mult,&_ZERO,&_FIFTEEN)); rightClickable
-                      ImGui::TableNextColumn();
-                      ImGui::Text("%s",FM_NAME(FM_MULT));
-                      
-                      if (ins->type==DIV_INS_FM || ins->type==DIV_INS_OPZ) {
-                        int detune=(op.dt&7)-(settings.unsignedDetune?0:3);
+                      if (ins->type==DIV_INS_OPZ) {
                         ImGui::TableNextRow();
                         ImGui::TableNextColumn();
                         ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
-                        if (CWSliderInt("##DT",&detune,-3,4)) { PARAMETER
-                          op.dt=detune+(settings.unsignedDetune?0:3);
-                        } rightClickable
+                        P(CWSliderScalar(FM_NAME(FM_EGSHIFT),ImGuiDataType_U8,&op.ksl,&_ZERO,&_THREE)); rightClickable
                         ImGui::TableNextColumn();
-                        ImGui::Text("%s",FM_NAME(FM_DT));
+                        ImGui::Text("%s",FM_NAME(FM_EGSHIFT));
+
+                        ImGui::TableNextRow();
+                        ImGui::TableNextColumn();
+                        ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
+                        P(CWSliderScalar(FM_NAME(FM_REV),ImGuiDataType_U8,&op.dam,&_ZERO,&_SEVEN)); rightClickable
+                        ImGui::TableNextColumn();
+                        ImGui::Text("%s",FM_NAME(FM_REV));
+                      }
+
+                      if (ins->type==DIV_INS_OPZ) {
+                        if (op.egt) {
+                          int block=op.dt;
+                          int freqNum=(op.mult<<4)|(op.dvb&15);
+
+                          ImGui::TableNextRow();
+                          ImGui::TableNextColumn();
+                          ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
+                          if (CWSliderInt(FM_NAME(FM_MULT),&block,0,7)) { PARAMETER
+                            if (block<0) block=0;
+                            if (block>7) block=7;
+                            op.dt=block;
+                          } rightClickable
+                          ImGui::TableNextColumn();
+                          ImGui::Text("Block");
+
+                          ImGui::TableNextRow();
+                          ImGui::TableNextColumn();
+                          ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
+                          if (CWSliderInt(FM_NAME(FM_FINE),&freqNum,0,255)) { PARAMETER
+                            if (freqNum<0) freqNum=0;
+                            if (freqNum>255) freqNum=255;
+                            op.mult=freqNum>>4;
+                            op.dvb=freqNum&15;
+                          } rightClickable
+                          ImGui::TableNextColumn();
+                          ImGui::Text("FreqNum");
+                        } else {
+                          ImGui::TableNextRow();
+                          ImGui::TableNextColumn();
+                          ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
+                          P(CWSliderScalar(FM_NAME(FM_MULT),ImGuiDataType_U8,&op.mult,&_ZERO,&_FIFTEEN)); rightClickable
+                          ImGui::TableNextColumn();
+                          ImGui::Text("%s",FM_NAME(FM_MULT));
+
+                          ImGui::TableNextRow();
+                          ImGui::TableNextColumn();
+                          ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
+                          P(CWSliderScalar(FM_NAME(FM_FINE),ImGuiDataType_U8,&op.dvb,&_ZERO,&_FIFTEEN)); rightClickable
+                          ImGui::TableNextColumn();
+                          ImGui::Text("%s",FM_NAME(FM_FINE));
+                        }
+                      } else {
+                        ImGui::TableNextRow();
+                        ImGui::TableNextColumn();
+                        ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
+                        P(CWSliderScalar(FM_NAME(FM_MULT),ImGuiDataType_U8,&op.mult,&_ZERO,&_FIFTEEN)); rightClickable
+                        ImGui::TableNextColumn();
+                        ImGui::Text("%s",FM_NAME(FM_MULT));
+                      }
+                      
+                      if (ins->type==DIV_INS_FM || ins->type==DIV_INS_OPZ) {
+                        if (!(ins->type==DIV_INS_OPZ && op.egt)) {
+                          int detune=(op.dt&7)-(settings.unsignedDetune?0:3);
+                          ImGui::TableNextRow();
+                          ImGui::TableNextColumn();
+                          ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
+                          if (CWSliderInt("##DT",&detune,-3,4)) { PARAMETER
+                            op.dt=detune+(settings.unsignedDetune?0:3);
+                          } rightClickable
+                          ImGui::TableNextColumn();
+                          ImGui::Text("%s",FM_NAME(FM_DT));
+                        }
 
                         ImGui::TableNextRow();
                         ImGui::TableNextColumn();
@@ -4277,7 +4392,7 @@ void FurnaceGUI::drawInsEdit() {
           }
 
           const char* waveLabel="Waveform";
-          int waveMax=(ins->type==DIV_INS_VERA)?3:255;
+          int waveMax=(ins->type==DIV_INS_VERA)?3:(MAX(1,e->song.waveLen-1));
           bool waveBitMode=false;
           if (ins->type==DIV_INS_C64 || ins->type==DIV_INS_SAA1099) {
             waveBitMode=true;
@@ -4295,7 +4410,7 @@ void FurnaceGUI::drawInsEdit() {
             waveBitMode=true;
           }
           if (ins->type==DIV_INS_VRC6) {
-            waveMax=ins->amiga.useSample?255:0;
+            waveMax=ins->amiga.useSample?(MAX(1,e->song.waveLen-1)):0;
           }
 
           if (ins->type==DIV_INS_OPLL) {
@@ -4303,7 +4418,7 @@ void FurnaceGUI::drawInsEdit() {
           }
 
           if (ins->type==DIV_INS_AY || ins->type==DIV_INS_AY8930) {
-            waveMax=ins->amiga.useSample?255:3;
+            waveMax=ins->amiga.useSample?(MAX(1,e->song.waveLen-1)):3;
             waveBitMode=ins->amiga.useSample?false:true;
           }
 
diff --git a/src/gui/pattern.cpp b/src/gui/pattern.cpp
index ec65101df..ae194925d 100644
--- a/src/gui/pattern.cpp
+++ b/src/gui/pattern.cpp
@@ -17,6 +17,8 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+// for suck's fake Clang extension!
+#include <imgui.h>
 #define _USE_MATH_DEFINES
 #include "gui.h"
 #include "../ta-log.h"
@@ -24,6 +26,7 @@
 #include "IconsFontAwesome4.h"
 #include "misc/cpp/imgui_stdlib.h"
 #include "guiConst.h"
+#include "../utfutils.h"
 #include <fmt/printf.h>
 
 inline float randRange(float min, float max) {
@@ -400,7 +403,7 @@ void FurnaceGUI::drawPattern() {
     ImGui::PushStyleColor(ImGuiCol_Header,uiColors[GUI_COLOR_PATTERN_SELECTION]);
     ImGui::PushStyleColor(ImGuiCol_HeaderHovered,uiColors[GUI_COLOR_PATTERN_SELECTION_HOVER]);
     ImGui::PushStyleColor(ImGuiCol_HeaderActive,uiColors[GUI_COLOR_PATTERN_SELECTION_ACTIVE]);
-    if (ImGui::BeginTable("PatternView",displayChans+2,ImGuiTableFlags_BordersInnerV|ImGuiTableFlags_ScrollX|ImGuiTableFlags_ScrollY|ImGuiTableFlags_NoPadInnerX)) {
+    if (ImGui::BeginTable("PatternView",displayChans+2,ImGuiTableFlags_BordersInnerV|ImGuiTableFlags_ScrollX|ImGuiTableFlags_ScrollY|ImGuiTableFlags_NoPadInnerX|ImGuiTableFlags_NoBordersInFrozenArea)) {
       ImGui::TableSetupColumn("pos",ImGuiTableColumnFlags_WidthFixed);
       char chanID[2048];
       float lineHeight=(ImGui::GetTextLineHeight()+2*dpiScale);
@@ -447,41 +450,46 @@ void FurnaceGUI::drawPattern() {
         if (!e->curSubSong->chanShow[i]) continue;
         ImGui::TableNextColumn();
         bool displayTooltip=false;
-        if (e->curSubSong->chanCollapse[i]) {
-          const char* chName=e->getChannelShortName(i);
-          if (strlen(chName)>3) {
-            snprintf(chanID,2048,"...##_CH%d",i);
-          } else {
-            snprintf(chanID,2048,"%s##_CH%d",chName,i);
-          }
-          displayTooltip=true;
-        } else {
-          const char* chName=e->getChannelName(i);
-          size_t chNameLimit=6+4*e->curPat[i].effectCols;
-          if (strlen(chName)>chNameLimit) {
-            String shortChName=chName;
-            shortChName.resize(chNameLimit-3);
-            shortChName+="...";
-            snprintf(chanID,2048," %s##_CH%d",shortChName.c_str(),i);
-            displayTooltip=true;
-          } else {
-            snprintf(chanID,2048," %s##_CH%d",chName,i);
-          }
-        }
+
         bool muted=e->isChannelMuted(i);
-        ImVec4 chanHead=muted?uiColors[GUI_COLOR_CHANNEL_MUTED]:uiColors[GUI_COLOR_CHANNEL_FM+e->getChannelType(i)];
+        ImVec4 chanHead=muted?uiColors[GUI_COLOR_CHANNEL_MUTED]:channelColor(i);
         ImVec4 chanHeadActive=chanHead;
         ImVec4 chanHeadHover=chanHead;
+        ImVec4 chanHeadBase=chanHead;
+
         if (e->keyHit[i]) {
-          keyHit[i]=0.2;
-          if (!muted) {
-            int note=e->getChanState(i)->note+60;
-            if (note>=0 && note<180) {
-              pianoKeyHit[note]=1.0;
+          keyHit1[i]=1.0f;
+          if (settings.channelFeedbackStyle==1) {
+            keyHit[i]=0.2;
+            if (!muted) {
+              int note=e->getChanState(i)->note+60;
+              if (note>=0 && note<180) {
+                pianoKeyHit[note]=1.0;
+              }
             }
           }
           e->keyHit[i]=false;
         }
+        if (settings.channelFeedbackStyle==2 && e->isRunning()) {
+          float amount=((float)(e->getChanState(i)->volume>>8)/(float)e->getMaxVolumeChan(i));
+          if (!e->getChanState(i)->keyOn) amount=0.0f;
+          keyHit[i]=amount*0.2f;
+          if (!muted) {
+            int note=e->getChanState(i)->note+60;
+            if (note>=0 && note<180) {
+              pianoKeyHit[note]=amount;
+            }
+          }
+        } else if (settings.channelFeedbackStyle==3 && e->isRunning()) {
+          bool active=e->getChanState(i)->keyOn;
+          keyHit[i]=active?0.2f:0.0f;
+          if (!muted) {
+            int note=e->getChanState(i)->note+60;
+            if (note>=0 && note<180) {
+              pianoKeyHit[note]=active?1.0f:0.0f;
+            }
+          }
+        }
         if (settings.guiColorsBase) {
           chanHead.x*=1.0-keyHit[i]; chanHead.y*=1.0-keyHit[i]; chanHead.z*=1.0-keyHit[i];
           chanHeadActive.x*=0.5; chanHeadActive.y*=0.5; chanHeadActive.z*=0.5;
@@ -491,17 +499,210 @@ void FurnaceGUI::drawPattern() {
           chanHeadActive.x*=0.8; chanHeadActive.y*=0.8; chanHeadActive.z*=0.8;
           chanHeadHover.x*=0.4+keyHit[i]; chanHeadHover.y*=0.4+keyHit[i]; chanHeadHover.z*=0.4+keyHit[i];
         }
-        keyHit[i]-=0.02*60.0*ImGui::GetIO().DeltaTime;
+        keyHit[i]-=((settings.channelStyle==0)?0.02:0.01)*60.0*ImGui::GetIO().DeltaTime;
         if (keyHit[i]<0) keyHit[i]=0;
         ImGui::PushStyleColor(ImGuiCol_Header,chanHead);
         ImGui::PushStyleColor(ImGuiCol_HeaderActive,chanHeadActive);
         ImGui::PushStyleColor(ImGuiCol_HeaderHovered,chanHeadHover);
-        ImGui::TableSetBgColor(ImGuiTableBgTarget_CellBg,ImGui::GetColorU32(chanHead));
+        ImGui::PushStyleColor(ImGuiCol_Text,ImGui::GetColorU32(channelTextColor(i)));
+        if (settings.channelStyle==0) ImGui::TableSetBgColor(ImGuiTableBgTarget_CellBg,ImGui::GetColorU32(chanHead));
         if (muted) ImGui::PushStyleColor(ImGuiCol_Text,uiColors[GUI_COLOR_CHANNEL_MUTED]);
-        ImGui::Selectable(chanID,true,ImGuiSelectableFlags_NoPadWithHalfSpacing,ImVec2(0.0f,lineHeight+1.0f*dpiScale));
+        if (settings.channelFont==0) ImGui::PushFont(mainFont);
+
+        // TODO: appearance
+        ImGuiWindow* window=ImGui::GetCurrentWindow();
+        ImVec2 size=ImVec2(
+          1.0f,
+          lineHeight+1.0f*dpiScale
+        );
+        ImDrawList* dl=ImGui::GetWindowDrawList();
+
+        if (settings.channelStyle!=0) {
+          size.y+=6.0f*dpiScale;
+        }
+
+        if (settings.channelStyle==2) {
+          size.y+=6.0f*dpiScale;
+        }
+        
+        ImVec2 minArea=window->DC.CursorPos;
+        ImVec2 maxArea=ImVec2(
+          minArea.x+window->WorkRect.Max.x-window->WorkRect.Min.x,
+          minArea.y+size.y
+        );
+        ImRect rect=ImRect(minArea,maxArea);
+        float padding=ImGui::CalcTextSize("A").x;
+
+        ImVec2 minLabelArea=minArea;
+        ImVec2 maxLabelArea=maxArea;
+
+        if (e->curSubSong->chanCollapse[i]) {
+          const char* chName=e->getChannelShortName(i);
+          if (strlen(chName)>3) {
+            snprintf(chanID,2048,"...");
+          } else {
+            snprintf(chanID,2048,"%s",chName);
+          }
+          displayTooltip=true;
+        } else {
+          minLabelArea.x+=padding;
+          maxLabelArea.x-=padding;
+          if (settings.channelStyle==3) { // split button
+            maxLabelArea.x-=ImGui::GetFrameHeightWithSpacing();
+          }
+          const char* chName=e->getChannelName(i);
+          float chNameLimit=maxLabelArea.x-minLabelArea.x;
+          if (ImGui::CalcTextSize(chName).x>chNameLimit) {
+            String shortChName;
+            float totalAdvanced=0.0f;
+            float ellipsisSize=ImGui::CalcTextSize("...").x;
+            for (const char* j=chName; *j;) {
+              signed char l;
+              int ch=decodeUTF8((const unsigned char*)j,l);
+
+              totalAdvanced+=ImGui::GetFont()->GetCharAdvance(ch);
+              if (totalAdvanced>(chNameLimit-ellipsisSize)) break;
+
+              for (int k=0; k<l; k++) {
+                shortChName+=j[k];
+              }
+
+              j+=l;
+            }
+            shortChName+="...";
+            snprintf(chanID,2048,"%s",shortChName.c_str());
+            displayTooltip=true;
+          } else {
+            snprintf(chanID,2048,"%s",chName);
+          }
+        }
+
+        if (settings.channelTextCenter) {
+          minLabelArea.x+=0.5f*(maxLabelArea.x-minLabelArea.x-ImGui::CalcTextSize(chanID).x);
+        }
+
+        if (extraChannelButtons==0 || settings.channelVolStyle!=0) ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing,ImVec2(0.0f,0.0f));
+
+        ImGui::PushID(2048+i);
+        switch (settings.channelStyle) {
+          case 0: // classic
+            ImGui::ItemSize(size,ImGui::GetStyle().FramePadding.y);
+            if (ImGui::ItemAdd(rect,ImGui::GetID(chanID))) {
+              bool hovered=ImGui::ItemHoverable(rect,ImGui::GetID(chanID));
+              ImU32 col=hovered?ImGui::GetColorU32(ImGuiCol_HeaderHovered):ImGui::GetColorU32(ImGuiCol_Header);
+              dl->AddRectFilled(rect.Min,rect.Max,col);
+              dl->AddText(ImVec2(minLabelArea.x,rect.Min.y),ImGui::GetColorU32(channelTextColor(i)),chanID);
+            }
+            break;
+          case 1: { // line
+            ImGui::ItemSize(size,ImGui::GetStyle().FramePadding.y);
+            if (ImGui::ItemAdd(rect,ImGui::GetID(chanID))) {
+              bool hovered=ImGui::ItemHoverable(rect,ImGui::GetID(chanID));
+              ImU32 fadeCol0=ImGui::GetColorU32(ImVec4(
+                chanHeadBase.x,
+                chanHeadBase.y,
+                chanHeadBase.z,
+                hovered?0.25f:0.0f
+              ));
+              ImU32 fadeCol=ImGui::GetColorU32(ImVec4(
+                chanHeadBase.x,
+                chanHeadBase.y,
+                chanHeadBase.z,
+                hovered?0.5f:MIN(1.0f,chanHeadBase.w*keyHit[i]*4.0f)
+              ));
+              dl->AddRectFilledMultiColor(rect.Min,rect.Max,fadeCol0,fadeCol0,fadeCol,fadeCol);
+              dl->AddLine(ImVec2(rect.Min.x,rect.Max.y),ImVec2(rect.Max.x,rect.Max.y),ImGui::GetColorU32(chanHeadBase),2.0f*dpiScale);
+              dl->AddText(ImVec2(minLabelArea.x,rect.Min.y+3.0*dpiScale),ImGui::GetColorU32(channelTextColor(i)),chanID);
+            }
+            break;
+          }
+          case 2: { // round
+            ImGui::ItemSize(size,ImGui::GetStyle().FramePadding.y);
+            if (ImGui::ItemAdd(rect,ImGui::GetID(chanID))) {
+              bool hovered=ImGui::ItemHoverable(rect,ImGui::GetID(chanID));
+              ImU32 fadeCol0=ImGui::GetColorU32(ImVec4(
+                chanHeadBase.x,
+                chanHeadBase.y,
+                chanHeadBase.z,
+                hovered?0.5f:MIN(1.0f,0.3f+chanHeadBase.w*keyHit[i]*1.5f)
+              ));
+              ImU32 fadeCol=ImGui::GetColorU32(ImVec4(
+                chanHeadBase.x,
+                chanHeadBase.y,
+                chanHeadBase.z,
+                hovered?0.3f:MIN(1.0f,0.2f+chanHeadBase.w*keyHit[i]*1.2f)
+              ));
+              ImVec2 rMin=rect.Min;
+              ImVec2 rMax=rect.Max;
+              rMin.x+=3.0f*dpiScale;
+              rMin.y+=6.0f*dpiScale;
+              rMax.x-=3.0f*dpiScale;
+              rMax.y-=6.0f*dpiScale;
+              dl->AddRectFilledMultiColor(rMin,rMax,fadeCol0,fadeCol0,fadeCol,fadeCol,4.0f*dpiScale);
+              dl->AddText(ImVec2(minLabelArea.x,rect.Min.y+6.0*dpiScale),ImGui::GetColorU32(channelTextColor(i)),chanID);
+            }
+            break;
+          }
+          case 3: // split button
+            ImGui::Dummy(ImVec2(1.0f,2.0f*dpiScale));
+            ImGui::SetCursorPosX(minLabelArea.x);
+            ImGui::TextUnformatted(chanID);
+            ImGui::SameLine();
+            ImGui::PushFont(mainFont);
+            ImGui::SmallButton(muted?ICON_FA_VOLUME_OFF:ICON_FA_VOLUME_UP);
+            ImGui::PopFont();
+            break;
+          case 4: { // square border
+            ImGui::ItemSize(size,ImGui::GetStyle().FramePadding.y);
+            if (ImGui::ItemAdd(rect,ImGui::GetID(chanID))) {
+              bool hovered=ImGui::ItemHoverable(rect,ImGui::GetID(chanID));
+              ImU32 fadeCol=ImGui::GetColorU32(ImVec4(
+                chanHeadBase.x,
+                chanHeadBase.y,
+                chanHeadBase.z,
+                hovered?1.0f:MIN(1.0f,0.2f+chanHeadBase.w*keyHit[i]*4.0f)
+              ));
+              ImVec2 rMin=rect.Min;
+              ImVec2 rMax=rect.Max;
+              rMin.x+=2.0f*dpiScale;
+              rMin.y+=3.0f*dpiScale;
+              rMax.x-=3.0f*dpiScale;
+              rMax.y-=3.0f*dpiScale;
+              dl->AddRect(rMin,rMax,fadeCol,0.0f,2.0*dpiScale);
+              dl->AddText(ImVec2(minLabelArea.x,rect.Min.y+3.0*dpiScale),ImGui::GetColorU32(channelTextColor(i)),chanID);
+            }
+            break;
+          }
+          case 5: { // round border
+            ImGui::ItemSize(size,ImGui::GetStyle().FramePadding.y);
+            if (ImGui::ItemAdd(rect,ImGui::GetID(chanID))) {
+              bool hovered=ImGui::ItemHoverable(rect,ImGui::GetID(chanID));
+              ImU32 fadeCol=ImGui::GetColorU32(ImVec4(
+                chanHeadBase.x,
+                chanHeadBase.y,
+                chanHeadBase.z,
+                hovered?1.0f:MIN(1.0f,0.2f+chanHeadBase.w*keyHit[i]*4.0f)
+              ));
+              ImVec2 rMin=rect.Min;
+              ImVec2 rMax=rect.Max;
+              rMin.x+=2.0f*dpiScale;
+              rMin.y+=3.0f*dpiScale;
+              rMax.x-=3.0f*dpiScale;
+              rMax.y-=3.0f*dpiScale;
+              dl->AddRect(rMin,rMax,fadeCol,4.0f*dpiScale,ImDrawFlags_RoundCornersAll,2.0*dpiScale);
+              dl->AddText(ImVec2(minLabelArea.x,rect.Min.y+3.0*dpiScale),ImGui::GetColorU32(channelTextColor(i)),chanID);
+            }
+            break;
+          }
+        }
+        ImGui::PopID();
+
+        if (extraChannelButtons==0 || settings.channelVolStyle!=0) ImGui::PopStyleVar();
+
         if (displayTooltip && ImGui::IsItemHovered()) {
           ImGui::SetTooltip("%s",e->getChannelName(i));
         }
+        if (settings.channelFont==0) ImGui::PopFont();
         if (ImGui::IsItemClicked(ImGuiMouseButton_Left)) {
           if (settings.soloAction!=1 && soloTimeout>0 && soloChan==i) {
             e->toggleSolo(i);
@@ -513,11 +714,72 @@ void FurnaceGUI::drawPattern() {
           }
         }
         if (muted) ImGui::PopStyleColor();
-        ImGui::PopStyleColor(3);
+        ImGui::PopStyleColor(4);
         if (settings.soloAction!=2) if (ImGui::IsItemClicked(ImGuiMouseButton_Right)) {
           inhibitMenu=true;
           e->toggleSolo(i);
         }
+
+        if (settings.channelStyle==3) {
+          ImGui::Dummy(ImVec2(1.0f,2.0f*dpiScale));
+        }
+
+        // volume bar
+        if (settings.channelVolStyle!=0) {
+          ImVec2 sizeV=ImVec2(
+            1.0f,
+            6.0*dpiScale
+          );
+          ImVec2 minAreaV=window->DC.CursorPos;
+          ImVec2 maxAreaV=ImVec2(
+            minAreaV.x+window->WorkRect.Max.x-window->WorkRect.Min.x,
+            minAreaV.y+sizeV.y
+          );
+          ImRect rectV=ImRect(minAreaV,maxAreaV);
+          ImGui::ItemSize(sizeV,ImGui::GetStyle().FramePadding.y);
+          if (ImGui::ItemAdd(rectV,ImGui::GetID(chanID))) {
+            float xLeft=0.0f;
+            float xRight=1.0f;
+
+            if (e->keyHit[i]) {
+              keyHit1[i]=1.0f;
+              e->keyHit[i]=false;
+            }
+
+            if (e->isRunning()) {
+              DivChannelState* cs=e->getChanState(i);
+              float stereoPan=(float)(e->convertPanSplitToLinearLR(cs->panL,cs->panR,256)-128)/128.0;
+              switch (settings.channelVolStyle) {
+                case 1: // simple
+                  xRight=((float)(e->getChanState(i)->volume>>8)/(float)e->getMaxVolumeChan(i))*0.9+(keyHit1[i]*0.1f);
+                  break;
+                case 2: { // stereo
+                  float amount=((float)(e->getChanState(i)->volume>>8)/(float)e->getMaxVolumeChan(i))*0.4+(keyHit1[i]*0.1f);
+                  xRight=0.5+amount*(1.0+MIN(0.0,stereoPan));
+                  xLeft=0.5-amount*(1.0-MAX(0.0,stereoPan));
+                  break;
+                }
+                case 3: // real
+                  xRight=chanOscVol[i];
+                  break;
+                case 4: // real (stereo)
+                  xRight=0.5+chanOscVol[i]*0.5*(1.0+MIN(0.0,stereoPan));
+                  xLeft=0.5-chanOscVol[i]*0.5*(1.0-MAX(0.0,stereoPan));
+                  break;
+              }
+
+              dl->AddRectFilled(
+                ImLerp(rectV.Min,rectV.Max,ImVec2(xLeft,0.0f)),
+                ImLerp(rectV.Min,rectV.Max,ImVec2(xRight,1.0f)),
+                ImGui::GetColorU32(chanHeadBase)
+              );
+            }
+            keyHit1[i]-=0.2f;
+            if (keyHit1[i]<0.0f) keyHit1[i]=0.0f;
+          }
+        }
+        
+        // extra buttons
         if (extraChannelButtons==2) {
           DivPattern* pat=e->curPat[i].getPattern(e->curOrders->ord[i][ord],true);
           ImGui::PushFont(mainFont);
diff --git a/src/gui/presets.cpp b/src/gui/presets.cpp
index 1bd637a23..7d83dc3fb 100644
--- a/src/gui/presets.cpp
+++ b/src/gui/presets.cpp
@@ -960,11 +960,27 @@ void FurnaceGUI::initSystemPresets() {
   cat.systems.push_back(FurnaceGUISysDef(
     "NEC PC-98 (with PC-9801-86)", { // -73 also has OPNA
       DIV_SYSTEM_PC98, 64, 0, 1,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16), // 2x 16-bit Burr Brown DAC
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16),
       0
     }
   ));
   cat.systems.push_back(FurnaceGUISysDef(
     "NEC PC-98 (with PC-9801-86; extended channel 3)", { // -73 also has OPNA
+      DIV_SYSTEM_PC98_EXT, 64, 0, 1,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16),
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16),
+      0
+    }
+  ));
+    cat.systems.push_back(FurnaceGUISysDef(
+    "NEC PC-98 (with PC-9801-73)", {
+      DIV_SYSTEM_PC98, 64, 0, 1,
+      0
+    }
+  ));
+    cat.systems.push_back(FurnaceGUISysDef(
+    "NEC PC-98 (with PC-9801-73; extended channel 3)", {
       DIV_SYSTEM_PC98_EXT, 64, 0, 1,
       0
     }
@@ -972,6 +988,7 @@ void FurnaceGUI::initSystemPresets() {
   cat.systems.push_back(FurnaceGUISysDef(
     "NEC PC-98 (with Sound Blaster 16 for PC-9800 w/PC-9801-26/K compatible)", {
       DIV_SYSTEM_OPN, 64, 0, 2, // 4MHz
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16)|(1<<20),
       DIV_SYSTEM_OPL3, 64, 0, 0,
       0
     }
@@ -979,6 +996,7 @@ void FurnaceGUI::initSystemPresets() {
   cat.systems.push_back(FurnaceGUISysDef(
     "NEC PC-98 (with Sound Blaster 16 for PC-9800 w/PC-9801-26/K compatible; extended channel 3)", {
       DIV_SYSTEM_OPN_EXT, 64, 0, 2, // 4MHz
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16)|(1<<20),
       DIV_SYSTEM_OPL3, 64, 0, 0,
       0
     }
@@ -986,6 +1004,7 @@ void FurnaceGUI::initSystemPresets() {
   cat.systems.push_back(FurnaceGUISysDef(
     "NEC PC-98 (with Sound Blaster 16 for PC-9800 w/PC-9801-26/K compatible in drums mode)", {
       DIV_SYSTEM_OPN, 64, 0, 2, // 4MHz
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16)|(1<<20),
       DIV_SYSTEM_OPL3_DRUMS, 64, 0, 2,
       0
     }
@@ -993,6 +1012,7 @@ void FurnaceGUI::initSystemPresets() {
   cat.systems.push_back(FurnaceGUISysDef(
     "NEC PC-98 (with Sound Blaster 16 for PC-9800 w/PC-9801-26/K compatible in drums mode; extended channel 3)", {
       DIV_SYSTEM_OPN_EXT, 64, 0, 2, // 4MHz
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16)|(1<<20),
       DIV_SYSTEM_OPL3_DRUMS, 64, 0, 2,
       0
     }
@@ -1092,6 +1112,20 @@ void FurnaceGUI::initSystemPresets() {
       0
     }
   ));
+  cat.systems.push_back(FurnaceGUISysDef(
+    "Atari ST", {
+      DIV_SYSTEM_AY8910, 64, 0, 19,
+      0
+    }
+  ));
+    cat.systems.push_back(FurnaceGUISysDef(
+    "Atari STE", {
+      DIV_SYSTEM_AY8910, 64, 0, 19,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 50667|(7<<16),
+      DIV_SYSTEM_PCM_DAC, 64, 0, 50667|(7<<16),
+      0
+    }
+  ));
   cat.systems.push_back(FurnaceGUISysDef(
     "SAM Coupé", {
       DIV_SYSTEM_SAA1099, 64, 0, 0,
@@ -1146,17 +1180,33 @@ void FurnaceGUI::initSystemPresets() {
       0
     }
   ));
-  cat.systems.push_back(FurnaceGUISysDef(
-    "PC + AdLib/Sound Blaster", {
+    cat.systems.push_back(FurnaceGUISysDef(
+    "PC + AdLib", {
       DIV_SYSTEM_OPL2, 64, 0, 0,
       DIV_SYSTEM_PCSPKR, 64, 0, 0,
       0
     }
+  ));
+      cat.systems.push_back(FurnaceGUISysDef(
+    "PC + AdLib (drums mode)", {
+      DIV_SYSTEM_OPL2, 64, 0, 0,
+      DIV_SYSTEM_PCSPKR, 64, 0, 0,
+      0
+    }
+  ));
+  cat.systems.push_back(FurnaceGUISysDef(
+    "PC + Sound Blaster", {
+      DIV_SYSTEM_OPL2, 64, 0, 0,
+      DIV_SYSTEM_PCSPKR, 64, 0, 0,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 22049|(7<<16),
+      0
+    }
   ));
   cat.systems.push_back(FurnaceGUISysDef(
     "PC + AdLib/Sound Blaster (drums mode)", {
       DIV_SYSTEM_OPL2_DRUMS, 64, 0, 0,
       DIV_SYSTEM_PCSPKR, 64, 0, 0,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 22049|(7<<16),
       0
     }
   ));
@@ -1165,6 +1215,7 @@ void FurnaceGUI::initSystemPresets() {
       DIV_SYSTEM_OPL2, 64, 0, 0,
       DIV_SYSTEM_SAA1099, 64, 0, 1,
       DIV_SYSTEM_SAA1099, 64, 0, 1,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 22049|(7<<16),
       DIV_SYSTEM_PCSPKR, 64, 0, 0,
       0
     }
@@ -1174,6 +1225,7 @@ void FurnaceGUI::initSystemPresets() {
       DIV_SYSTEM_OPL2_DRUMS, 64, 0, 0,
       DIV_SYSTEM_SAA1099, 64, 0, 1,
       DIV_SYSTEM_SAA1099, 64, 0, 1,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 22049|(7<<16),
       DIV_SYSTEM_PCSPKR, 64, 0, 0,
       0
     }
@@ -1182,6 +1234,7 @@ void FurnaceGUI::initSystemPresets() {
     "PC + Sound Blaster Pro", {
       DIV_SYSTEM_OPL2, 64, -127, 0,
       DIV_SYSTEM_OPL2, 64, 127, 0,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 22049|(7<<16)|(1<<20), //alternatively 44.1 khz mono
       DIV_SYSTEM_PCSPKR, 64, 0, 0,
       0
     }
@@ -1190,6 +1243,7 @@ void FurnaceGUI::initSystemPresets() {
     "PC + Sound Blaster Pro (drums mode)", {
       DIV_SYSTEM_OPL2_DRUMS, 64, -127, 0,
       DIV_SYSTEM_OPL2_DRUMS, 64, 127, 0,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 22049|(7<<16)|(1<<20), //alternatively 44.1 khz mono
       DIV_SYSTEM_PCSPKR, 64, 0, 0,
       0
     }
@@ -1197,6 +1251,7 @@ void FurnaceGUI::initSystemPresets() {
   cat.systems.push_back(FurnaceGUISysDef(
     "PC + Sound Blaster Pro 2", {
       DIV_SYSTEM_OPL3, 64, 0, 0,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16)|(1<<20),
       DIV_SYSTEM_PCSPKR, 64, 0, 0,
       0
     }
@@ -1204,6 +1259,7 @@ void FurnaceGUI::initSystemPresets() {
   cat.systems.push_back(FurnaceGUISysDef(
     "PC + Sound Blaster Pro 2 (drums mode)", {
       DIV_SYSTEM_OPL3_DRUMS, 64, 0, 0,
+      DIV_SYSTEM_PCM_DAC, 64, 0, 44099|(15<<16)|(1<<20),
       DIV_SYSTEM_PCSPKR, 64, 0, 0,
       0
     }
diff --git a/src/gui/settings.cpp b/src/gui/settings.cpp
index f5965c3a5..14ade83bd 100644
--- a/src/gui/settings.cpp
+++ b/src/gui/settings.cpp
@@ -1284,14 +1284,14 @@ void FurnaceGUI::drawSettings() {
           }
 
           ImGui::Text("Channel name colors:");
-          if (ImGui::RadioButton("Single##CTC0",settings.channelColors==0)) {
-            settings.channelColors=0;
+          if (ImGui::RadioButton("Single##CTC0",settings.channelTextColors==0)) {
+            settings.channelTextColors=0;
           }
-          if (ImGui::RadioButton("Channel type##CTC1",settings.channelColors==1)) {
-            settings.channelColors=1;
+          if (ImGui::RadioButton("Channel type##CTC1",settings.channelTextColors==1)) {
+            settings.channelTextColors=1;
           }
-          if (ImGui::RadioButton("Instrument type##CTC2",settings.channelColors==2)) {
-            settings.channelColors=2;
+          if (ImGui::RadioButton("Instrument type##CTC2",settings.channelTextColors==2)) {
+            settings.channelTextColors=2;
           }
 
           ImGui::Text("Channel style:");
@@ -1327,6 +1327,9 @@ void FurnaceGUI::drawSettings() {
           if (ImGui::RadioButton("Real##CHV3",settings.channelVolStyle==3)) {
             settings.channelVolStyle=3;
           }
+          if (ImGui::RadioButton("Real (stereo)##CHV4",settings.channelVolStyle==4)) {
+            settings.channelVolStyle=4;
+          }
 
           ImGui::Text("Channel feedback style:");
 
@@ -1343,6 +1346,20 @@ void FurnaceGUI::drawSettings() {
             settings.channelFeedbackStyle=3;
           }
 
+          ImGui::Text("Channel font:");
+
+          if (ImGui::RadioButton("Regular##CHFont0",settings.channelFont==0)) {
+            settings.channelFont=0;
+          }
+          if (ImGui::RadioButton("Monospace##CHFont1",settings.channelFont==1)) {
+            settings.channelFont=1;
+          }
+
+          bool channelTextCenterB=settings.channelTextCenter;
+          if (ImGui::Checkbox("Center channel name",&channelTextCenterB)) {
+            settings.channelTextCenter=channelTextCenterB;
+          }
+
           ImGui::Separator();
 
           bool insEditColorizeB=settings.insEditColorize;
@@ -1668,6 +1685,8 @@ void FurnaceGUI::drawSettings() {
               ImGui::TreePop();
             }
             if (ImGui::TreeNode("Channel")) {
+              UI_COLOR_CONFIG(GUI_COLOR_CHANNEL_BG,"Single color (background)");
+              UI_COLOR_CONFIG(GUI_COLOR_CHANNEL_FG,"Single color (text)");
               UI_COLOR_CONFIG(GUI_COLOR_CHANNEL_FM,"FM");
               UI_COLOR_CONFIG(GUI_COLOR_CHANNEL_PULSE,"Pulse");
               UI_COLOR_CONFIG(GUI_COLOR_CHANNEL_NOISE,"Noise");
@@ -2286,9 +2305,11 @@ void FurnaceGUI::syncSettings() {
   settings.saveUnusedPatterns=e->getConfInt("saveUnusedPatterns",0);
   settings.channelColors=e->getConfInt("channelColors",1);
   settings.channelTextColors=e->getConfInt("channelTextColors",0);
-  settings.channelStyle=e->getConfInt("channelStyle",0);
+  settings.channelStyle=e->getConfInt("channelStyle",1);
   settings.channelVolStyle=e->getConfInt("channelVolStyle",0);
   settings.channelFeedbackStyle=e->getConfInt("channelFeedbackStyle",1);
+  settings.channelFont=e->getConfInt("channelFont",1);
+  settings.channelTextCenter=e->getConfInt("channelTextCenter",1);
   settings.maxRecentFile=e->getConfInt("maxRecentFile",10);
 
   clampSetting(settings.mainFontSize,2,96);
@@ -2386,8 +2407,10 @@ void FurnaceGUI::syncSettings() {
   clampSetting(settings.channelColors,0,2);
   clampSetting(settings.channelTextColors,0,2);
   clampSetting(settings.channelStyle,0,5);
-  clampSetting(settings.channelVolStyle,0,3);
+  clampSetting(settings.channelVolStyle,0,4);
   clampSetting(settings.channelFeedbackStyle,0,3);
+  clampSetting(settings.channelFont,0,1);
+  clampSetting(settings.channelTextCenter,0,1);
   clampSetting(settings.maxRecentFile,0,30);
 
   settings.initialSys=e->decodeSysDesc(e->getConfString("initialSys",""));
@@ -2543,6 +2566,8 @@ void FurnaceGUI::commitSettings() {
   e->setConf("channelStyle",settings.channelStyle);
   e->setConf("channelVolStyle",settings.channelVolStyle);
   e->setConf("channelFeedbackStyle",settings.channelFeedbackStyle);
+  e->setConf("channelFont",settings.channelFont);
+  e->setConf("channelTextCenter",settings.channelTextCenter);
   e->setConf("maxRecentFile",settings.maxRecentFile);
 
   // colors
diff --git a/src/gui/songInfo.cpp b/src/gui/songInfo.cpp
index 44982abaf..8d4e0999e 100644
--- a/src/gui/songInfo.cpp
+++ b/src/gui/songInfo.cpp
@@ -39,7 +39,7 @@ void FurnaceGUI::drawSongInfo() {
       ImGui::TableNextColumn();
       float avail=ImGui::GetContentRegionAvail().x;
       ImGui::SetNextItemWidth(avail);
-      if (ImGui::InputText("##Name",&e->song.name)) { MARK_MODIFIED
+      if (ImGui::InputText("##Name",&e->song.name,ImGuiInputTextFlags_UndoRedo)) { MARK_MODIFIED
         updateWindowTitle();
       }
       if (e->song.insLen==2) {
@@ -61,7 +61,7 @@ void FurnaceGUI::drawSongInfo() {
       ImGui::Text("Author");
       ImGui::TableNextColumn();
       ImGui::SetNextItemWidth(avail);
-      if (ImGui::InputText("##Author",&e->song.author)) {
+      if (ImGui::InputText("##Author",&e->song.author,ImGuiInputTextFlags_UndoRedo)) {
         MARK_MODIFIED;
       }
 
@@ -70,18 +70,30 @@ void FurnaceGUI::drawSongInfo() {
       ImGui::Text("Album");
       ImGui::TableNextColumn();
       ImGui::SetNextItemWidth(avail);
-      if (ImGui::InputText("##Category",&e->song.category)) {
+      if (ImGui::InputText("##Category",&e->song.category,ImGuiInputTextFlags_UndoRedo)) {
         MARK_MODIFIED;
       }
       ImGui::TableNextRow();
       ImGui::TableNextColumn();
       ImGui::Text("System");
       ImGui::TableNextColumn();
-      ImGui::SetNextItemWidth(avail);
-      if (ImGui::InputText("##SystemName",&e->song.systemName)) {
+      ImGui::SetNextItemWidth(MAX(16.0f*dpiScale,avail-autoButtonSize-ImGui::GetStyle().ItemSpacing.x));
+      if (ImGui::InputText("##SystemName",&e->song.systemName,ImGuiInputTextFlags_UndoRedo)) {
         MARK_MODIFIED;
         updateWindowTitle();
+        e->song.autoSystem=false;
       }
+      ImGui::SameLine();
+      pushToggleColors(e->song.autoSystem);
+      if (ImGui::Button("Auto")) {
+        e->song.autoSystem=!e->song.autoSystem;
+        if (e->song.autoSystem) {
+          autoDetectSystem();
+          updateWindowTitle();
+        }
+      }
+      popToggleColors();
+      autoButtonSize=ImGui::GetItemRectSize().x;
 
       ImGui::EndTable();
     }
diff --git a/src/gui/songNotes.cpp b/src/gui/songNotes.cpp
index 74f4ed7ff..338c7da24 100644
--- a/src/gui/songNotes.cpp
+++ b/src/gui/songNotes.cpp
@@ -30,7 +30,7 @@ void FurnaceGUI::drawNotes() {
   }
   if (!notesOpen) return;
   if (ImGui::Begin("Song Comments",&notesOpen,globalWinFlags)) {
-    ImGui::InputTextMultiline("##SongNotes",&e->song.notes,ImGui::GetContentRegionAvail());
+    ImGui::InputTextMultiline("##SongNotes",&e->song.notes,ImGui::GetContentRegionAvail(),ImGuiInputTextFlags_UndoRedo);
   }
   if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) curWindow=GUI_WINDOW_NOTES;
   ImGui::End();
diff --git a/src/gui/subSongs.cpp b/src/gui/subSongs.cpp
index c56bf6405..f076298f2 100644
--- a/src/gui/subSongs.cpp
+++ b/src/gui/subSongs.cpp
@@ -91,7 +91,7 @@ void FurnaceGUI::drawSubSongs() {
     ImGui::Text("Name");
     ImGui::SameLine();
     ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
-    if (ImGui::InputText("##SubSongName",&e->curSubSong->name)) {
+    if (ImGui::InputText("##SubSongName",&e->curSubSong->name,ImGuiInputTextFlags_UndoRedo)) {
       MARK_MODIFIED;
     }
   }
diff --git a/src/gui/sysConf.cpp b/src/gui/sysConf.cpp
index ba3ded1a6..98b600286 100644
--- a/src/gui/sysConf.cpp
+++ b/src/gui/sysConf.cpp
@@ -217,7 +217,7 @@ void FurnaceGUI::drawSysConf(int chan, DivSystem type, unsigned int& flags, bool
       if (ImGui::RadioButton("PAL (3.55MHz)",(flags&15)==1)) {
         copyOfFlags=(flags&(~15))|1;
       }
-      if (ImGui::RadioButton("BBC Micro (4MHz)",(flags&15)==2)) {
+      if (ImGui::RadioButton("Arcade (4MHz)",(flags&15)==2)) {
         copyOfFlags=(flags&(~15))|2;
       }
       if (ImGui::RadioButton("Half NTSC (1.79MHz)",(flags&15)==3)) {
@@ -358,6 +358,14 @@ void FurnaceGUI::drawSysConf(int chan, DivSystem type, unsigned int& flags, bool
       if (ImGui::Checkbox("Stereo##_AY_STEREO",&stereo)) {
         copyOfFlags=(flags&(~0x40))|(stereo?0x40:0);
       }
+      if (stereo) {
+        int sep=256-((flags>>8)&255);
+        if (CWSliderInt("Separation",&sep,1,256)) {
+          if (sep<1) sep=1;
+          if (sep>256) sep=256;
+          copyOfFlags=(flags&(~0xff00))|((256-sep)<<8);
+        }
+      }
       ImGui::EndDisabled();
       bool clockSel=flags&0x80;
       ImGui::BeginDisabled((type==DIV_SYSTEM_AY8910) && ((flags&0x30)!=16));
@@ -765,6 +773,9 @@ void FurnaceGUI::drawSysConf(int chan, DivSystem type, unsigned int& flags, bool
   if (copyOfFlags!=flags) {
     if (chan>=0) {
       e->setSysFlags(chan,copyOfFlags,restart);
+      if (e->song.autoSystem) {
+        autoDetectSystem();
+      }
       updateWindowTitle();
     } else {
       flags=copyOfFlags;
diff --git a/src/gui/sysEx.cpp b/src/gui/sysEx.cpp
index f8849b562..5a72649ee 100644
--- a/src/gui/sysEx.cpp
+++ b/src/gui/sysEx.cpp
@@ -60,6 +60,7 @@ bool FurnaceGUI::parseSysEx(unsigned char* data, size_t len) {
           op.rs=reader.readC();
           reader.readC(); // EBS - ignore
           op.am=reader.readC();
+          // TODO: don't ignore after I add KVS to Furnace
           reader.readC(); // KVS - ignore
           op.tl=3+((99-reader.readC())*124)/99;
           unsigned char freq=reader.readC();
diff --git a/src/gui/sysManager.cpp b/src/gui/sysManager.cpp
index 98f939d0f..386d26583 100644
--- a/src/gui/sysManager.cpp
+++ b/src/gui/sysManager.cpp
@@ -82,6 +82,9 @@ void FurnaceGUI::drawSysManager() {
           DivSystem picked=systemPicker();
           if (picked!=DIV_SYSTEM_NULL) {
             e->changeSystem(i,picked,preserveChanPos);
+            if (e->song.autoSystem) {
+              autoDetectSystem();
+            }
             updateWindowTitle();
             ImGui::CloseCurrentPopup();
           }
@@ -110,6 +113,9 @@ void FurnaceGUI::drawSysManager() {
             if (!e->addSystem(picked)) {
               showError("cannot add chip! ("+e->getLastError()+")");
             }
+            if (e->song.autoSystem) {
+              autoDetectSystem();
+            }
             updateWindowTitle();
             ImGui::CloseCurrentPopup();
           }