diff --git a/CMakeLists.txt b/CMakeLists.txt
index 86e491c7..c638befe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -170,6 +170,7 @@ src/gui/font_ptMono.cpp
 src/gui/font_unifont.cpp
 src/gui/font_icon.cpp
 src/gui/fonts.cpp
+src/gui/debug.cpp
 src/gui/gui.cpp)
 
 if (NOT WIN32 AND NOT APPLE)
diff --git a/demos/bruno_time.fur b/demos/bruno_time.fur
new file mode 100644
index 00000000..7905bed6
Binary files /dev/null and b/demos/bruno_time.fur differ
diff --git a/src/engine/dispatch.h b/src/engine/dispatch.h
index bb5e596b..953f0fc7 100644
--- a/src/engine/dispatch.h
+++ b/src/engine/dispatch.h
@@ -171,6 +171,12 @@ class DivDispatch {
      */
     virtual void tick();
 
+    /**
+     * get the state of a channel.
+     * @return a pointer, or NULL.
+     */
+    virtual void* getChanState(int chan);
+
     /**
      * get this dispatch's state.
      * @return a pointer to the dispatch's state. must be deallocated manually!
diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index d24f935a..a85a0f11 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -3716,6 +3716,16 @@ void DivEngine::setLoops(int loops) {
   remainingLoops=loops;
 }
 
+DivChannelState* DivEngine::getChanState(int ch) {
+  if (ch<0 || ch>=chans) return NULL;
+  return &chan[ch];
+}
+
+void* DivEngine::getDispatchChanState(int ch) {
+  if (ch<0 || ch>=chans) return NULL;
+  return disCont[dispatchOfChan[ch]].dispatch->getChanState(dispatchChanOfChan[ch]);
+}
+
 void DivEngine::playSub(bool preserveDrift) {
   reset();
   if (preserveDrift && curOrder==0) return;
diff --git a/src/engine/engine.h b/src/engine/engine.h
index 5bd36304..de643fbe 100644
--- a/src/engine/engine.h
+++ b/src/engine/engine.h
@@ -150,9 +150,6 @@ class DivEngine {
   std::map<String,String> conf;
   std::queue<DivNoteEvent> pendingNotes;
   bool isMuted[DIV_MAX_CHANS];
-  DivSystem sysOfChan[DIV_MAX_CHANS];
-  int dispatchOfChan[DIV_MAX_CHANS];
-  int dispatchChanOfChan[DIV_MAX_CHANS];
   std::mutex isBusy;
   String configPath;
   String configFile;
@@ -206,6 +203,10 @@ class DivEngine {
 
   public:
     DivSong song;
+    DivSystem sysOfChan[DIV_MAX_CHANS];
+    int dispatchOfChan[DIV_MAX_CHANS];
+    int dispatchChanOfChan[DIV_MAX_CHANS];
+
     void runExportThread();
     void nextBuf(float** in, float** out, int inChans, int outChans, unsigned int size);
     DivInstrument* getIns(int index);
@@ -448,6 +449,12 @@ class DivEngine {
     // set remaining loops. -1 means loop forever.
     void setLoops(int loops);
 
+    // get channel state
+    DivChannelState* getChanState(int chan);
+
+    // get dispatch channel state
+    void* getDispatchChanState(int chan);
+
     // set the audio system.
     void setAudio(DivAudioEngines which);
 
diff --git a/src/engine/orders.h b/src/engine/orders.h
index eb8cc2e0..2f771799 100644
--- a/src/engine/orders.h
+++ b/src/engine/orders.h
@@ -1,3 +1,6 @@
+#ifndef _ORDERS_H
+#define _ORDERS_H
+
 struct DivOrders {
   unsigned char ord[DIV_MAX_CHANS][128];
 
@@ -5,3 +8,5 @@ struct DivOrders {
     memset(ord,0,DIV_MAX_CHANS*128);
   }
 };
+
+#endif
\ No newline at end of file
diff --git a/src/engine/platform/abstract.cpp b/src/engine/platform/abstract.cpp
index 60cf94b1..2577119e 100644
--- a/src/engine/platform/abstract.cpp
+++ b/src/engine/platform/abstract.cpp
@@ -6,6 +6,10 @@ void DivDispatch::acquire(short* bufL, short* bufR, size_t start, size_t len) {
 void DivDispatch::tick() {
 }
 
+void* DivDispatch::getChanState(int chan) {
+  return NULL;
+}
+
 void* DivDispatch::getState() {
   return NULL;
 }
diff --git a/src/engine/platform/amiga.cpp b/src/engine/platform/amiga.cpp
index 1c81e6b8..80a06483 100644
--- a/src/engine/platform/amiga.cpp
+++ b/src/engine/platform/amiga.cpp
@@ -205,6 +205,10 @@ void DivPlatformAmiga::forceIns() {
   }
 }
 
+void* DivPlatformAmiga::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformAmiga::reset() {
   for (int i=0; i<4; i++) {
     chan[i]=DivPlatformAmiga::Channel();
diff --git a/src/engine/platform/amiga.h b/src/engine/platform/amiga.h
index dd40738b..14e8a6e2 100644
--- a/src/engine/platform/amiga.h
+++ b/src/engine/platform/amiga.h
@@ -45,9 +45,12 @@ class DivPlatformAmiga: public DivDispatch {
   Channel chan[4];
   bool isMuted[4];
 
+  friend void putDispatchChan(void*,int,int);
+
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/arcade.cpp b/src/engine/platform/arcade.cpp
index b3766fba..3764702e 100644
--- a/src/engine/platform/arcade.cpp
+++ b/src/engine/platform/arcade.cpp
@@ -548,6 +548,10 @@ void DivPlatformArcade::notifyInsChange(int ins) {
   }
 }
 
+void* DivPlatformArcade::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformArcade::reset() {
   while (!writes.empty()) writes.pop();
   if (useYMFM) {
diff --git a/src/engine/platform/arcade.h b/src/engine/platform/arcade.h
index 7b0ae818..1eba2a4a 100644
--- a/src/engine/platform/arcade.h
+++ b/src/engine/platform/arcade.h
@@ -63,9 +63,12 @@ class DivPlatformArcade: public DivDispatch {
     void acquire_nuked(short* bufL, short* bufR, size_t start, size_t len);
     void acquire_ymfm(short* bufL, short* bufR, size_t start, size_t len);
   
+    friend void putDispatchChan(void*,int,int);
+  
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/ay.cpp b/src/engine/platform/ay.cpp
index 511de815..b10ae364 100644
--- a/src/engine/platform/ay.cpp
+++ b/src/engine/platform/ay.cpp
@@ -290,6 +290,10 @@ void DivPlatformAY8910::forceIns() {
   immWrite(0x0d,ayEnvMode);
 }
 
+void* DivPlatformAY8910::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformAY8910::reset() {
   while (!writes.empty()) writes.pop();
   ay->device_reset();
diff --git a/src/engine/platform/ay.h b/src/engine/platform/ay.h
index 401e03c8..4a74fd7f 100644
--- a/src/engine/platform/ay.h
+++ b/src/engine/platform/ay.h
@@ -49,10 +49,13 @@ class DivPlatformAY8910: public DivDispatch {
     short ayEnvSlide;
     short* ayBuf[3];
     size_t ayBufLen;
+
+    friend void putDispatchChan(void*,int,int);
   
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/ay8930.cpp b/src/engine/platform/ay8930.cpp
index 9953d6c4..c0f1c65e 100644
--- a/src/engine/platform/ay8930.cpp
+++ b/src/engine/platform/ay8930.cpp
@@ -328,6 +328,10 @@ void DivPlatformAY8930::forceIns() {
   }
 }
 
+void* DivPlatformAY8930::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformAY8930::reset() {
   while (!writes.empty()) writes.pop();
   ay->device_reset();
diff --git a/src/engine/platform/ay8930.h b/src/engine/platform/ay8930.h
index a79f67ae..71b838a6 100644
--- a/src/engine/platform/ay8930.h
+++ b/src/engine/platform/ay8930.h
@@ -43,10 +43,13 @@ class DivPlatformAY8930: public DivDispatch {
     short ayEnvSlide[3];
     short* ayBuf[3];
     size_t ayBufLen;
+
+    friend void putDispatchChan(void*,int,int);
   
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/c64.cpp b/src/engine/platform/c64.cpp
index eb590b78..b5760a3a 100644
--- a/src/engine/platform/c64.cpp
+++ b/src/engine/platform/c64.cpp
@@ -327,6 +327,10 @@ void DivPlatformC64::notifyInsDeletion(void* ins) {
   }
 }
 
+void* DivPlatformC64::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformC64::reset() {
   for (int i=0; i<3; i++) {
     chan[i]=DivPlatformC64::Channel();
diff --git a/src/engine/platform/c64.h b/src/engine/platform/c64.h
index 1d44efd6..e1785fc5 100644
--- a/src/engine/platform/c64.h
+++ b/src/engine/platform/c64.h
@@ -52,10 +52,13 @@ class DivPlatformC64: public DivDispatch {
 
   SID sid;
 
+  friend void putDispatchChan(void*,int,int);
+
   void updateFilter();
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/dummy.cpp b/src/engine/platform/dummy.cpp
index 497e2a01..d8512d40 100644
--- a/src/engine/platform/dummy.cpp
+++ b/src/engine/platform/dummy.cpp
@@ -31,6 +31,10 @@ void DivPlatformDummy::tick() {
   }
 }
 
+void* DivPlatformDummy::getChanState(int ch) {
+  return &chan[ch];
+}
+
 int DivPlatformDummy::dispatch(DivCommand c) {
   switch (c.cmd) {
     case DIV_CMD_NOTE_ON:
diff --git a/src/engine/platform/dummy.h b/src/engine/platform/dummy.h
index 958e4a7c..2b33a92b 100644
--- a/src/engine/platform/dummy.h
+++ b/src/engine/platform/dummy.h
@@ -15,10 +15,12 @@ class DivPlatformDummy: public DivDispatch {
   Channel chan[128];
   bool isMuted[128];
   unsigned char chans;
+  friend void putDispatchChan(void*,int,int);
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     void muteChannel(int ch, bool mute);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void tick();
     int init(DivEngine* parent, int channels, int sugRate, bool pal);
diff --git a/src/engine/platform/gb.cpp b/src/engine/platform/gb.cpp
index 802a118d..702139f3 100644
--- a/src/engine/platform/gb.cpp
+++ b/src/engine/platform/gb.cpp
@@ -301,6 +301,10 @@ void DivPlatformGB::forceIns() {
   updateWave();
 }
 
+void* DivPlatformGB::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformGB::reset() {
   for (int i=0; i<4; i++) {
     chan[i]=DivPlatformGB::Channel();
diff --git a/src/engine/platform/gb.h b/src/engine/platform/gb.h
index 6da4376d..424f5bc6 100644
--- a/src/engine/platform/gb.h
+++ b/src/engine/platform/gb.h
@@ -38,9 +38,11 @@ class DivPlatformGB: public DivDispatch {
   GB_gameboy_t* gb;
   unsigned char procMute();
   void updateWave();
+  friend void putDispatchChan(void*,int,int);
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/genesis.cpp b/src/engine/platform/genesis.cpp
index 53ab5ce7..0c358c51 100644
--- a/src/engine/platform/genesis.cpp
+++ b/src/engine/platform/genesis.cpp
@@ -567,6 +567,10 @@ void DivPlatformGenesis::toggleRegisterDump(bool enable) {
   psg.toggleRegisterDump(enable);
 }
 
+void* DivPlatformGenesis::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformGenesis::reset() {
   while (!writes.empty()) writes.pop();
   OPN2_Reset(&fm);
diff --git a/src/engine/platform/genesis.h b/src/engine/platform/genesis.h
index 3e007a57..b9d9e4b0 100644
--- a/src/engine/platform/genesis.h
+++ b/src/engine/platform/genesis.h
@@ -67,10 +67,13 @@ class DivPlatformGenesis: public DivDispatch {
 
     int octave(int freq);
     int toFreq(int freq);
+
+    friend void putDispatchChan(void*,int,int);
   
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/genesisext.cpp b/src/engine/platform/genesisext.cpp
index 15c5e771..7f354d45 100644
--- a/src/engine/platform/genesisext.cpp
+++ b/src/engine/platform/genesisext.cpp
@@ -296,6 +296,12 @@ void DivPlatformGenesisExt::forceIns() {
   }
 }
 
+void* DivPlatformGenesisExt::getChanState(int ch) {
+  if (ch>=6) return &chan[ch-3];
+  if (ch>=2) return &opChan[ch-2];
+  return &chan[ch];
+}
+
 void DivPlatformGenesisExt::reset() {
   DivPlatformGenesis::reset();
 
diff --git a/src/engine/platform/genesisext.h b/src/engine/platform/genesisext.h
index 80b497e0..de7ca9d2 100644
--- a/src/engine/platform/genesisext.h
+++ b/src/engine/platform/genesisext.h
@@ -16,8 +16,10 @@ class DivPlatformGenesisExt: public DivPlatformGenesis {
   };
   OpChannel opChan[4];
   bool isOpMuted[4];
+  friend void putDispatchChan(void*,int,int);
   public:
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/nes.cpp b/src/engine/platform/nes.cpp
index 35014a2c..e5c8c867 100644
--- a/src/engine/platform/nes.cpp
+++ b/src/engine/platform/nes.cpp
@@ -344,6 +344,10 @@ void DivPlatformNES::forceIns() {
   }
 }
 
+void* DivPlatformNES::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformNES::reset() {
   for (int i=0; i<5; i++) {
     chan[i]=DivPlatformNES::Channel();
diff --git a/src/engine/platform/nes.h b/src/engine/platform/nes.h
index a511a7a1..3249da98 100644
--- a/src/engine/platform/nes.h
+++ b/src/engine/platform/nes.h
@@ -42,10 +42,12 @@ class DivPlatformNES: public DivDispatch {
   struct NESAPU* nes;
 
   float freqBase;
+  friend void putDispatchChan(void*,int,int);
 
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/pce.cpp b/src/engine/platform/pce.cpp
index 9ed7254a..59ebc08f 100644
--- a/src/engine/platform/pce.cpp
+++ b/src/engine/platform/pce.cpp
@@ -340,6 +340,10 @@ void DivPlatformPCE::forceIns() {
   }
 }
 
+void* DivPlatformPCE::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformPCE::reset() {
   while (!writes.empty()) writes.pop();
   for (int i=0; i<6; i++) {
diff --git a/src/engine/platform/pce.h b/src/engine/platform/pce.h
index bdf0bf32..e0739c9e 100644
--- a/src/engine/platform/pce.h
+++ b/src/engine/platform/pce.h
@@ -56,9 +56,11 @@ class DivPlatformPCE: public DivDispatch {
   unsigned char sampleBank;
   PCE_PSG* pce;
   void updateWave(int ch);
+  friend void putDispatchChan(void*,int,int);
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/saa.cpp b/src/engine/platform/saa.cpp
index a264cf44..6cc341a1 100644
--- a/src/engine/platform/saa.cpp
+++ b/src/engine/platform/saa.cpp
@@ -255,6 +255,10 @@ void DivPlatformSAA1099::forceIns() {
   rWrite(0x16,saaNoise[0]|(saaNoise[1]<<4));
 }
 
+void* DivPlatformSAA1099::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformSAA1099::reset() {
   while (!writes.empty()) writes.pop();
   saa=saa1099_device();
diff --git a/src/engine/platform/saa.h b/src/engine/platform/saa.h
index 26f6d25c..4bda0100 100644
--- a/src/engine/platform/saa.h
+++ b/src/engine/platform/saa.h
@@ -47,10 +47,12 @@ class DivPlatformSAA1099: public DivDispatch {
     size_t saaBufLen;
     unsigned char saaEnv[2];
     unsigned char saaNoise[2];
+    friend void putDispatchChan(void*,int,int);
   
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/sms.cpp b/src/engine/platform/sms.cpp
index 831aec87..70d3d4bf 100644
--- a/src/engine/platform/sms.cpp
+++ b/src/engine/platform/sms.cpp
@@ -187,6 +187,10 @@ void DivPlatformSMS::forceIns() {
   }
 }
 
+void* DivPlatformSMS::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformSMS::reset() {
   for (int i=0; i<4; i++) {
     chan[i]=DivPlatformSMS::Channel();
diff --git a/src/engine/platform/sms.h b/src/engine/platform/sms.h
index 5dc75411..798685cc 100644
--- a/src/engine/platform/sms.h
+++ b/src/engine/platform/sms.h
@@ -31,10 +31,12 @@ class DivPlatformSMS: public DivDispatch {
   unsigned char snNoiseMode;
   bool updateSNMode;
   sn76496_device* sn;
+  friend void putDispatchChan(void*,int,int);
   public:
     int acquireOne();
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/tia.cpp b/src/engine/platform/tia.cpp
index e31c507d..ebd587cc 100644
--- a/src/engine/platform/tia.cpp
+++ b/src/engine/platform/tia.cpp
@@ -228,6 +228,10 @@ void DivPlatformTIA::forceIns() {
   }
 }
 
+void* DivPlatformTIA::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformTIA::reset() {
   tia.reset();
   for (int i=0; i<2; i++) {
diff --git a/src/engine/platform/tia.h b/src/engine/platform/tia.h
index 8843ef67..180e2035 100644
--- a/src/engine/platform/tia.h
+++ b/src/engine/platform/tia.h
@@ -19,10 +19,12 @@ class DivPlatformTIA: public DivDispatch {
     Channel chan[2];
     bool isMuted[2];
     TIASound tia;
+    friend void putDispatchChan(void*,int,int);
   
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/ym2610.cpp b/src/engine/platform/ym2610.cpp
index 8087c98e..fd5e367a 100644
--- a/src/engine/platform/ym2610.cpp
+++ b/src/engine/platform/ym2610.cpp
@@ -570,6 +570,10 @@ void DivPlatformYM2610::forceIns() {
   immWrite(0x0d,ayEnvMode);
 }
 
+void* DivPlatformYM2610::getChanState(int ch) {
+  return &chan[ch];
+}
+
 void DivPlatformYM2610::reset() {
   while (!writes.empty()) writes.pop();
   if (dumpWrites) {
diff --git a/src/engine/platform/ym2610.h b/src/engine/platform/ym2610.h
index 0269a5b0..93879e6b 100644
--- a/src/engine/platform/ym2610.h
+++ b/src/engine/platform/ym2610.h
@@ -63,10 +63,12 @@ class DivPlatformYM2610: public DivDispatch {
 
     int octave(int freq);
     int toFreq(int freq);
+    friend void putDispatchChan(void*,int,int);
   
   public:
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/platform/ym2610ext.cpp b/src/engine/platform/ym2610ext.cpp
index d582199f..71072eda 100644
--- a/src/engine/platform/ym2610ext.cpp
+++ b/src/engine/platform/ym2610ext.cpp
@@ -268,6 +268,13 @@ void DivPlatformYM2610Ext::forceIns() {
   }
 }
 
+
+void* DivPlatformYM2610Ext::getChanState(int ch) {
+  if (ch>=5) return &chan[ch-3];
+  if (ch>=1) return &opChan[ch-1];
+  return &chan[ch];
+}
+
 void DivPlatformYM2610Ext::reset() {
   DivPlatformYM2610::reset();
 
diff --git a/src/engine/platform/ym2610ext.h b/src/engine/platform/ym2610ext.h
index f5064c7f..94219803 100644
--- a/src/engine/platform/ym2610ext.h
+++ b/src/engine/platform/ym2610ext.h
@@ -16,8 +16,10 @@ class DivPlatformYM2610Ext: public DivPlatformYM2610 {
   };
   OpChannel opChan[4];
   bool isOpMuted[4];
+  friend void putDispatchChan(void*,int,int);
   public:
     int dispatch(DivCommand c);
+    void* getChanState(int chan);
     void reset();
     void forceIns();
     void tick();
diff --git a/src/engine/song.h b/src/engine/song.h
index f663d6cc..d05975a8 100644
--- a/src/engine/song.h
+++ b/src/engine/song.h
@@ -1,3 +1,5 @@
+#ifndef _SONG_H
+#define _SONG_H
 #include <stdio.h>
 #include <vector>
 
@@ -158,3 +160,5 @@ struct DivSong {
     system[0]=DIV_SYSTEM_GENESIS;
   }
 };
+
+#endif
\ No newline at end of file
diff --git a/src/gui/debug.cpp b/src/gui/debug.cpp
new file mode 100644
index 00000000..01988959
--- /dev/null
+++ b/src/gui/debug.cpp
@@ -0,0 +1,202 @@
+#include "debug.h"
+#include "imgui.h"
+#include "../engine/platform/genesis.h"
+#include "../engine/platform/genesisext.h"
+#include "../engine/platform/sms.h"
+#include "../engine/platform/gb.h"
+#include "../engine/platform/pce.h"
+#include "../engine/platform/nes.h"
+#include "../engine/platform/c64.h"
+#include "../engine/platform/arcade.h"
+#include "../engine/platform/ym2610.h"
+#include "../engine/platform/ym2610ext.h"
+#include "../engine/platform/ay.h"
+#include "../engine/platform/ay8930.h"
+#include "../engine/platform/tia.h"
+#include "../engine/platform/saa.h"
+#include "../engine/platform/amiga.h"
+#include "../engine/platform/dummy.h"
+
+void putDispatchChan(void* data, int chanNum, int type) {
+  ImVec4 colorOn=ImVec4(1.0f,1.0f,0.0f,1.0f);
+  ImVec4 colorOff=ImVec4(0.3f,0.3f,0.3f,1.0f);
+  switch (type) {
+    case DIV_SYSTEM_GENESIS: {
+      DivPlatformGenesis::Channel* ch=(DivPlatformGenesis::Channel*)data;
+      ImGui::Text("> Genesis");
+      ImGui::Text("- freqHL: %.2x%.2x",ch->freqH,ch->freqL);
+      ImGui::Text("* freq: %d",ch->freq);
+      ImGui::Text(" - base: %d",ch->baseFreq);
+      ImGui::Text(" - pitch: %d",ch->pitch);
+      ImGui::Text("- note: %d",ch->note);
+      ImGui::Text("- ins: %d",ch->ins);
+      ImGui::Text("- vol: %.2x",ch->vol);
+      ImGui::Text("- outVol: %.2x",ch->outVol);
+      ImGui::Text("- pan: %x",ch->pan);
+      ImGui::TextColored(ch->active?colorOn:colorOff,">> Active");
+      ImGui::TextColored(ch->insChanged?colorOn:colorOff,">> InsChanged");
+      ImGui::TextColored(ch->freqChanged?colorOn:colorOff,">> FreqChanged");
+      ImGui::TextColored(ch->keyOn?colorOn:colorOff,">> KeyOn");
+      ImGui::TextColored(ch->keyOff?colorOn:colorOff,">> KeyOff");
+      ImGui::TextColored(ch->portaPause?colorOn:colorOff,">> PortaPause");
+      ImGui::TextColored(ch->furnaceDac?colorOn:colorOff,">> FurnaceDAC");
+      ImGui::TextColored(ch->inPorta?colorOn:colorOff,">> InPorta");
+      break;
+    }
+    case DIV_SYSTEM_SMS: {
+      DivPlatformSMS::Channel* ch=(DivPlatformSMS::Channel*)data;
+      ImGui::Text("> SMS");
+      ImGui::Text("* freq: %d",ch->freq);
+      ImGui::Text(" - base: %d",ch->baseFreq);
+      ImGui::Text(" - pitch: %d",ch->pitch);
+      ImGui::Text("- note: %d",ch->note);
+      ImGui::Text("- ins: %d",ch->ins);
+      ImGui::Text("- vol: %.2x",ch->vol);
+      ImGui::Text("- outVol: %.2x",ch->outVol);
+      ImGui::TextColored(ch->active?colorOn:colorOff,">> Active");
+      ImGui::TextColored(ch->insChanged?colorOn:colorOff,">> InsChanged");
+      ImGui::TextColored(ch->freqChanged?colorOn:colorOff,">> FreqChanged");
+      ImGui::TextColored(ch->keyOn?colorOn:colorOff,">> KeyOn");
+      ImGui::TextColored(ch->keyOff?colorOn:colorOff,">> KeyOff");
+      break;
+    }
+    case DIV_SYSTEM_GB: {
+      DivPlatformGB::Channel* ch=(DivPlatformGB::Channel*)data;
+      ImGui::Text("> GameBoy");
+      ImGui::Text("* freq: %d",ch->freq);
+      ImGui::Text(" - base: %d",ch->baseFreq);
+      ImGui::Text(" - pitch: %d",ch->pitch);
+      ImGui::Text("- note: %d",ch->note);
+      ImGui::Text("- ins: %d",ch->ins);
+      ImGui::Text("- duty: %d",ch->duty);
+      ImGui::Text("- sweep: %.2x",ch->sweep);
+      ImGui::Text("- vol: %.2x",ch->vol);
+      ImGui::Text("- outVol: %.2x",ch->outVol);
+      ImGui::Text("- wave: %d",ch->wave);
+      ImGui::TextColored(ch->active?colorOn:colorOff,">> Active");
+      ImGui::TextColored(ch->insChanged?colorOn:colorOff,">> InsChanged");
+      ImGui::TextColored(ch->freqChanged?colorOn:colorOff,">> FreqChanged");
+      ImGui::TextColored(ch->sweepChanged?colorOn:colorOff,">> SweepChanged");
+      ImGui::TextColored(ch->keyOn?colorOn:colorOff,">> KeyOn");
+      ImGui::TextColored(ch->keyOff?colorOn:colorOff,">> KeyOff");
+      ImGui::TextColored(ch->inPorta?colorOn:colorOff,">> InPorta");
+      break;
+    }
+    case DIV_SYSTEM_PCE: {
+      DivPlatformPCE::Channel* ch=(DivPlatformPCE::Channel*)data;
+      ImGui::Text("> PCEngine");
+      ImGui::Text("* freq: %d",ch->freq);
+      ImGui::Text(" - base: %d",ch->baseFreq);
+      ImGui::Text(" - pitch: %d",ch->pitch);
+      ImGui::Text("- note: %d",ch->note);
+      ImGui::Text("* DAC:");
+      ImGui::Text(" - period: %d",ch->dacPeriod);
+      ImGui::Text(" - rate: %d",ch->dacRate);
+      ImGui::Text(" - pos: %d",ch->dacPos);
+      ImGui::Text(" - sample: %d",ch->dacSample);
+      ImGui::Text("- ins: %d",ch->ins);
+      ImGui::Text("- pan: %.2x",ch->pan);
+      ImGui::Text("- vol: %.2x",ch->vol);
+      ImGui::Text("- outVol: %.2x",ch->outVol);
+      ImGui::Text("- wave: %d",ch->wave);
+      ImGui::TextColored(ch->active?colorOn:colorOff,">> Active");
+      ImGui::TextColored(ch->insChanged?colorOn:colorOff,">> InsChanged");
+      ImGui::TextColored(ch->freqChanged?colorOn:colorOff,">> FreqChanged");
+      ImGui::TextColored(ch->keyOn?colorOn:colorOff,">> KeyOn");
+      ImGui::TextColored(ch->keyOff?colorOn:colorOff,">> KeyOff");
+      ImGui::TextColored(ch->inPorta?colorOn:colorOff,">> InPorta");
+      ImGui::TextColored(ch->noise?colorOn:colorOff,">> Noise");
+      ImGui::TextColored(ch->pcm?colorOn:colorOff,">> DAC");
+      ImGui::TextColored(ch->furnaceDac?colorOn:colorOff,">> FurnaceDAC");
+      break;
+    }
+    case DIV_SYSTEM_NES: {
+      DivPlatformNES::Channel* ch=(DivPlatformNES::Channel*)data;
+      ImGui::Text("> NES");
+      ImGui::Text("* freq: %d",ch->freq);
+      ImGui::Text(" - base: %d",ch->baseFreq);
+      ImGui::Text(" - pitch: %d",ch->pitch);
+      ImGui::Text(" - prev: %d",ch->prevFreq);
+      ImGui::Text("- note: %d",ch->note);
+      ImGui::Text("- ins: %d",ch->ins);
+      ImGui::Text("- duty: %d",ch->duty);
+      ImGui::Text("- sweep: %.2x",ch->sweep);
+      ImGui::Text("- vol: %.2x",ch->vol);
+      ImGui::Text("- outVol: %.2x",ch->outVol);
+      ImGui::Text("- wave: %d",ch->wave);
+      ImGui::TextColored(ch->active?colorOn:colorOff,">> Active");
+      ImGui::TextColored(ch->insChanged?colorOn:colorOff,">> InsChanged");
+      ImGui::TextColored(ch->freqChanged?colorOn:colorOff,">> FreqChanged");
+      ImGui::TextColored(ch->sweepChanged?colorOn:colorOff,">> SweepChanged");
+      ImGui::TextColored(ch->keyOn?colorOn:colorOff,">> KeyOn");
+      ImGui::TextColored(ch->keyOff?colorOn:colorOff,">> KeyOff");
+      ImGui::TextColored(ch->inPorta?colorOn:colorOff,">> InPorta");
+      ImGui::TextColored(ch->furnaceDac?colorOn:colorOff,">> FurnaceDAC");
+      break;
+    }
+    case DIV_SYSTEM_C64_6581: case DIV_SYSTEM_C64_8580: {
+      DivPlatformC64::Channel* ch=(DivPlatformC64::Channel*)data;
+      ImGui::Text("> C64");
+      ImGui::Text("* freq: %d",ch->freq);
+      ImGui::Text(" - base: %d",ch->baseFreq);
+      ImGui::Text(" - pitch: %d",ch->pitch);
+      ImGui::Text(" - prev: %d",ch->prevFreq);
+      ImGui::Text("- testWhen: %d",ch->testWhen);
+      ImGui::Text("- note: %d",ch->note);
+      ImGui::Text("- ins: %d",ch->ins);
+      ImGui::Text("- duty: %d",ch->duty);
+      ImGui::Text("- sweep: %.2x",ch->sweep);
+      ImGui::Text("- wave: %.1x",ch->wave);
+      ImGui::Text("- ADSR: %.1x %.1x %.1x %.1x",ch->attack,ch->decay,ch->sustain,ch->release);
+      ImGui::Text("- vol: %.2x",ch->vol);
+      ImGui::Text("- outVol: %.2x",ch->outVol);
+      ImGui::TextColored(ch->active?colorOn:colorOff,">> Active");
+      ImGui::TextColored(ch->insChanged?colorOn:colorOff,">> InsChanged");
+      ImGui::TextColored(ch->freqChanged?colorOn:colorOff,">> FreqChanged");
+      ImGui::TextColored(ch->sweepChanged?colorOn:colorOff,">> SweepChanged");
+      ImGui::TextColored(ch->keyOn?colorOn:colorOff,">> KeyOn");
+      ImGui::TextColored(ch->keyOff?colorOn:colorOff,">> KeyOff");
+      ImGui::TextColored(ch->inPorta?colorOn:colorOff,">> InPorta");
+      ImGui::TextColored(ch->filter?colorOn:colorOff,">> Filter");
+      ImGui::TextColored(ch->resetMask?colorOn:colorOff,">> ResetMask");
+      ImGui::TextColored(ch->resetFilter?colorOn:colorOff,">> ResetFilter");
+      ImGui::TextColored(ch->resetDuty?colorOn:colorOff,">> ResetDuty");
+      ImGui::TextColored(ch->ring?colorOn:colorOff,">> Ring");
+      ImGui::TextColored(ch->sync?colorOn:colorOff,">> Sync");
+      break;
+    }
+    case DIV_SYSTEM_ARCADE: {
+      DivPlatformArcade::Channel* ch=(DivPlatformArcade::Channel*)data;
+      ImGui::Text("> Arcade");
+      ImGui::Text("- freqHL: %.2x%.2x",ch->freqH,ch->freqL);
+      ImGui::Text("* freq: %d",ch->freq);
+      ImGui::Text(" - base: %d",ch->baseFreq);
+      ImGui::Text(" - pitch: %d",ch->pitch);
+      //ImGui::Text("- note: %d",ch->note);
+      ImGui::Text("- ins: %d",ch->ins);
+      ImGui::Text("- KOnCycles: %d",ch->konCycles);
+      ImGui::Text("- vol: %.2x",ch->vol);
+       //ImGui::Text("- outVol: %.2x",ch->outVol);
+      ImGui::Text("- chVolL: %.2x",ch->chVolL);
+      ImGui::Text("- chVolR: %.2x",ch->chVolR);
+      ImGui::Text("* PCM:");
+      ImGui::Text(" - sample: %d",ch->pcm.sample);
+      ImGui::Text(" - pos: %d",ch->pcm.pos>>8);
+      ImGui::Text(" - subPos: %d",ch->pcm.pos&0xff);
+      ImGui::Text(" - len: %d",ch->pcm.len);
+      ImGui::Text(" - freq: %.2x",ch->pcm.freq);
+      ImGui::TextColored(ch->active?colorOn:colorOff,">> Active");
+      ImGui::TextColored(ch->insChanged?colorOn:colorOff,">> InsChanged");
+      ImGui::TextColored(ch->freqChanged?colorOn:colorOff,">> FreqChanged");
+      ImGui::TextColored(ch->keyOn?colorOn:colorOff,">> KeyOn");
+      ImGui::TextColored(ch->keyOff?colorOn:colorOff,">> KeyOff");
+      ImGui::TextColored(ch->portaPause?colorOn:colorOff,">> PortaPause");
+      ImGui::TextColored(ch->furnacePCM?colorOn:colorOff,">> FurnacePCM");
+      //ImGui::TextColored(ch->inPorta?colorOn:colorOff,">> InPorta");
+      break;
+    }
+    default:
+      ImGui::Text("Unknown system! Help!");
+      break;
+  }
+}
\ No newline at end of file
diff --git a/src/gui/debug.h b/src/gui/debug.h
new file mode 100644
index 00000000..49f01bdc
--- /dev/null
+++ b/src/gui/debug.h
@@ -0,0 +1,6 @@
+#ifndef _GUI_DEBUG_H
+#define _GUI_DEBUG_H
+#include "../engine/song.h"
+
+void putDispatchChan(void* data, int chanNum, int type);
+#endif
\ No newline at end of file
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index d5face38..8d1771d7 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -1,5 +1,6 @@
 #define _USE_MATH_DEFINES
 #include "gui.h"
+#include "debug.h"
 #include "SDL_clipboard.h"
 #include "SDL_events.h"
 #include "SDL_keycode.h"
@@ -2780,6 +2781,131 @@ void FurnaceGUI::commitSettings() {
   ImGui::GetIO().Fonts->Build();
 }
 
+void FurnaceGUI::drawDebug() {
+  static int bpOrder;
+  static int bpRow;
+  static int bpTick;
+  static bool bpOn;
+  if (!debugOpen) return;
+  if (ImGui::Begin("Debug",&debugOpen,ImGuiWindowFlags_NoDocking)) {
+    ImGui::Text("NOTE: use with caution.");
+    if (ImGui::TreeNode("Debug Controls")) {
+      ImGui::Button("Pause");
+      ImGui::SameLine();
+      ImGui::Button("Frame Advance");
+      ImGui::SameLine();
+      ImGui::Button("Row Advance");
+      ImGui::SameLine();
+      ImGui::Button("Pattern Advance");
+
+      ImGui::Button("Panic");
+      ImGui::SameLine();
+      if (ImGui::Button("Abort")) {
+        abort();
+      }
+      ImGui::TreePop();
+    }
+    if (ImGui::TreeNode("Breakpoint")) {
+      ImGui::InputInt("Order",&bpOrder);
+      ImGui::InputInt("Row",&bpRow);
+      ImGui::InputInt("Tick",&bpTick);
+      ImGui::Checkbox("Enable",&bpOn);
+      ImGui::TreePop();
+    }
+    if (ImGui::TreeNode("Dispatch Status")) {
+      ImGui::Text("for best results set latency to minimum or use the Frame Advance button.");
+      ImGui::Columns(e->getTotalChannelCount());
+      for (int i=0; i<e->getTotalChannelCount(); i++) {
+        void* ch=e->getDispatchChanState(i);
+        ImGui::TextColored(uiColors[GUI_COLOR_ACCENT_PRIMARY],"Ch. %d: %d, %d",i,e->dispatchOfChan[i],e->dispatchChanOfChan[i]);
+        if (ch==NULL) {
+          ImGui::Text("NULL");
+        } else {
+          putDispatchChan(ch,e->dispatchChanOfChan[i],e->sysOfChan[i]);
+        }
+        ImGui::NextColumn();
+      }
+      ImGui::Columns();
+      ImGui::TreePop();
+    }
+    if (ImGui::TreeNode("Playback Status")) {
+      ImGui::Text("for best results set latency to minimum or use the Frame Advance button.");
+      ImGui::Columns(e->getTotalChannelCount());
+      for (int i=0; i<e->getTotalChannelCount(); i++) {
+        DivChannelState* ch=e->getChanState(i);
+        ImGui::TextColored(uiColors[GUI_COLOR_ACCENT_PRIMARY],"Channel %d:",i);
+        if (ch==NULL) {
+          ImGui::Text("NULL");
+        } else {
+          ImGui::Text("* General:");
+          ImGui::Text("- note = %d",ch->note);
+          ImGui::Text("- oldNote = %d",ch->oldNote);
+          ImGui::Text("- pitch = %d",ch->pitch);
+          ImGui::Text("- portaSpeed = %d",ch->portaSpeed);
+          ImGui::Text("- portaNote = %d",ch->portaNote);
+          ImGui::Text("- volume = %.4x",ch->volume);
+          ImGui::Text("- volSpeed = %d",ch->volSpeed);
+          ImGui::Text("- cut = %d",ch->cut);
+          ImGui::Text("- rowDelay = %d",ch->rowDelay);
+          ImGui::Text("- volMax = %.4x",ch->volMax);
+          ImGui::Text("- delayOrder = %d",ch->delayOrder);
+          ImGui::Text("- delayRow = %d",ch->delayRow);
+          ImGui::Text("- retrigSpeed = %d",ch->retrigSpeed);
+          ImGui::Text("- retrigTick = %d",ch->retrigTick);
+          ImGui::PushStyleColor(ImGuiCol_Text,(ch->vibratoDepth>0)?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_TEXT]);
+          ImGui::Text("* Vibrato:");
+          ImGui::Text("- depth = %d",ch->vibratoDepth);
+          ImGui::Text("- rate = %d",ch->vibratoRate);
+          ImGui::Text("- pos = %d",ch->vibratoPos);
+          ImGui::Text("- dir = %d",ch->vibratoDir);
+          ImGui::Text("- fine = %d",ch->vibratoFine);
+          ImGui::PopStyleColor();
+          ImGui::PushStyleColor(ImGuiCol_Text,(ch->tremoloDepth>0)?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_TEXT]);
+          ImGui::Text("* Tremolo:");
+          ImGui::Text("- depth = %d",ch->tremoloDepth);
+          ImGui::Text("- rate = %d",ch->tremoloRate);
+          ImGui::Text("- pos = %d",ch->tremoloPos);
+          ImGui::PopStyleColor();
+          ImGui::PushStyleColor(ImGuiCol_Text,(ch->arp>0)?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_TEXT]);
+          ImGui::Text("* Arpeggio:");
+          ImGui::Text("- arp = %.2X",ch->arp);
+          ImGui::Text("- stage = %d",ch->arpStage);
+          ImGui::Text("- ticks = %d",ch->arpTicks);
+          ImGui::PopStyleColor();
+          ImGui::Text("* Miscellaneous:");
+          ImGui::TextColored(ch->doNote?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> Do Note");
+          ImGui::TextColored(ch->legato?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> Legato");
+          ImGui::TextColored(ch->portaStop?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> PortaStop");
+          ImGui::TextColored(ch->keyOn?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> Key On");
+          ImGui::TextColored(ch->keyOff?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> Key Off");
+          ImGui::TextColored(ch->nowYouCanStop?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> NowYouCanStop");
+          ImGui::TextColored(ch->stopOnOff?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> Stop on Off");
+          ImGui::TextColored(ch->arpYield?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> Arp Yield");
+          ImGui::TextColored(ch->delayLocked?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> DelayLocked");
+          ImGui::TextColored(ch->inPorta?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> InPorta");
+          ImGui::TextColored(ch->scheduledSlideReset?uiColors[GUI_COLOR_MACRO_VOLUME]:uiColors[GUI_COLOR_HEADER],">> SchedSlide");
+        }
+        ImGui::NextColumn();
+      }
+      ImGui::Columns();
+      ImGui::TreePop();
+    }
+    if (ImGui::TreeNode("Settings")) {
+      if (ImGui::Button("Sync")) syncSettings();
+      ImGui::SameLine();
+      if (ImGui::Button("Commit")) commitSettings();
+      ImGui::SameLine();
+      if (ImGui::Button("Force Load")) e->loadConf();
+      ImGui::SameLine();
+      if (ImGui::Button("Force Save")) e->saveConf();
+      ImGui::TreePop();
+    }
+    ImGui::Text("Song format version %d",e->song.version);
+    ImGui::Text("Furnace version " DIV_VERSION " (%d)",DIV_ENGINE_VERSION);
+  }
+  ImGui::End();
+}
+
 void FurnaceGUI::startSelection(int xCoarse, int xFine, int y) {
   if (xCoarse!=selStart.xCoarse || xFine!=selStart.xFine || y!=selStart.y) {
     curNibble=false;
@@ -4379,6 +4505,7 @@ bool FurnaceGUI::loop() {
       ImGui::EndMenu();
     }
     if (ImGui::BeginMenu("help")) {
+      if (ImGui::MenuItem("debug menu")) debugOpen=!debugOpen;
       if (ImGui::MenuItem("about...")) {
         aboutOpen=true;
         aboutScroll=0;
@@ -4413,6 +4540,7 @@ bool FurnaceGUI::loop() {
     drawMixer();
     drawPattern();
     drawSettings();
+    drawDebug();
 
     if (ImGuiFileDialog::Instance()->Display("FileDialog",ImGuiWindowFlags_NoCollapse|ImGuiWindowFlags_NoMove,ImVec2(600.0f*dpiScale,400.0f*dpiScale),ImVec2(scrW*dpiScale,scrH*dpiScale))) {
       if (ImGuiFileDialog::Instance()->IsOk()) {
@@ -4994,6 +5122,9 @@ FurnaceGUI::FurnaceGUI():
   soloTimeout(0),
   orderEditMode(0),
   orderCursor(-1),
+  loopOrder(-1),
+  loopRow(-1),
+  loopEnd(-1),
   editControlsOpen(true),
   ordersOpen(true),
   insListOpen(true),
@@ -5007,6 +5138,7 @@ FurnaceGUI::FurnaceGUI():
   aboutOpen(false),
   settingsOpen(false),
   mixerOpen(false),
+  debugOpen(false),
   selecting(false),
   curNibble(false),
   orderNibble(false),
diff --git a/src/gui/gui.h b/src/gui/gui.h
index 62142ae3..4f6f67b5 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -230,9 +230,10 @@ class FurnaceGUI {
   char finalLayoutPath[4096];
 
   int curIns, curWave, curSample, curOctave, oldRow, oldOrder, oldOrder1, editStep, exportLoops, soloChan, soloTimeout, orderEditMode, orderCursor;
+  int loopOrder, loopRow, loopEnd;
   bool editControlsOpen, ordersOpen, insListOpen, songInfoOpen, patternOpen, insEditOpen;
   bool waveListOpen, waveEditOpen, sampleListOpen, sampleEditOpen, aboutOpen, settingsOpen;
-  bool mixerOpen;
+  bool mixerOpen, debugOpen;
   SelectionPoint selStart, selEnd, cursor;
   bool selecting, curNibble, orderNibble, extraChannelButtons, followOrders, followPattern, changeAllOrders;
   FurnaceGUIWindows curWindow;
@@ -313,6 +314,7 @@ class FurnaceGUI {
   void drawMixer();
   void drawAbout();
   void drawSettings();
+  void drawDebug();
 
   void syncSettings();
   void commitSettings();