diff --git a/asm/musyx/creverb.s b/asm/musyx/runtime/CheapReverb/creverb.s
similarity index 100%
rename from asm/musyx/creverb.s
rename to asm/musyx/runtime/CheapReverb/creverb.s
diff --git a/asm/musyx/creverb_fx.s b/asm/musyx/runtime/CheapReverb/creverb_fx.s
similarity index 100%
rename from asm/musyx/creverb_fx.s
rename to asm/musyx/runtime/CheapReverb/creverb_fx.s
diff --git a/asm/musyx/chorus_fx.s b/asm/musyx/runtime/Chorus/chorus_fx.s
similarity index 100%
rename from asm/musyx/chorus_fx.s
rename to asm/musyx/runtime/Chorus/chorus_fx.s
diff --git a/asm/musyx/delay_fx.s b/asm/musyx/runtime/Delay/delay_fx.s
similarity index 100%
rename from asm/musyx/delay_fx.s
rename to asm/musyx/runtime/Delay/delay_fx.s
diff --git a/asm/musyx/reverb.s b/asm/musyx/runtime/StdReverb/reverb.s
similarity index 100%
rename from asm/musyx/reverb.s
rename to asm/musyx/runtime/StdReverb/reverb.s
diff --git a/asm/musyx/reverb_fx.s b/asm/musyx/runtime/StdReverb/reverb_fx.s
similarity index 100%
rename from asm/musyx/reverb_fx.s
rename to asm/musyx/runtime/StdReverb/reverb_fx.s
diff --git a/asm/musyx/dsp_import.s b/asm/musyx/runtime/dsp_import.s
similarity index 100%
rename from asm/musyx/dsp_import.s
rename to asm/musyx/runtime/dsp_import.s
diff --git a/asm/musyx/hardware.s b/asm/musyx/runtime/hardware.s
similarity index 100%
rename from asm/musyx/hardware.s
rename to asm/musyx/runtime/hardware.s
diff --git a/asm/musyx/hw_aramdma.s b/asm/musyx/runtime/hw_aramdma.s
similarity index 100%
rename from asm/musyx/hw_aramdma.s
rename to asm/musyx/runtime/hw_aramdma.s
diff --git a/asm/musyx/hw_dolphin.s b/asm/musyx/runtime/hw_dolphin.s
similarity index 100%
rename from asm/musyx/hw_dolphin.s
rename to asm/musyx/runtime/hw_dolphin.s
diff --git a/asm/musyx/hw_dspctrl.s b/asm/musyx/runtime/hw_dspctrl.s
similarity index 100%
rename from asm/musyx/hw_dspctrl.s
rename to asm/musyx/runtime/hw_dspctrl.s
diff --git a/asm/musyx/hw_memory.s b/asm/musyx/runtime/hw_memory.s
similarity index 100%
rename from asm/musyx/hw_memory.s
rename to asm/musyx/runtime/hw_memory.s
diff --git a/asm/musyx/hw_volconv.s b/asm/musyx/runtime/hw_volconv.s
similarity index 100%
rename from asm/musyx/hw_volconv.s
rename to asm/musyx/runtime/hw_volconv.s
diff --git a/asm/musyx/s_data.s b/asm/musyx/runtime/s_data.s
similarity index 100%
rename from asm/musyx/s_data.s
rename to asm/musyx/runtime/s_data.s
diff --git a/asm/musyx/seq.s b/asm/musyx/runtime/seq.s
similarity index 100%
rename from asm/musyx/seq.s
rename to asm/musyx/runtime/seq.s
diff --git a/asm/musyx/seq_api.s b/asm/musyx/runtime/seq_api.s
similarity index 100%
rename from asm/musyx/seq_api.s
rename to asm/musyx/runtime/seq_api.s
diff --git a/asm/musyx/snd3d.s b/asm/musyx/runtime/snd3d.s
similarity index 100%
rename from asm/musyx/snd3d.s
rename to asm/musyx/runtime/snd3d.s
diff --git a/asm/musyx/snd_init.s b/asm/musyx/runtime/snd_init.s
similarity index 100%
rename from asm/musyx/snd_init.s
rename to asm/musyx/runtime/snd_init.s
diff --git a/asm/musyx/snd_math.s b/asm/musyx/runtime/snd_math.s
similarity index 100%
rename from asm/musyx/snd_math.s
rename to asm/musyx/runtime/snd_math.s
diff --git a/asm/musyx/snd_midictrl.s b/asm/musyx/runtime/snd_midictrl.s
similarity index 100%
rename from asm/musyx/snd_midictrl.s
rename to asm/musyx/runtime/snd_midictrl.s
diff --git a/asm/musyx/snd_service.s b/asm/musyx/runtime/snd_service.s
similarity index 100%
rename from asm/musyx/snd_service.s
rename to asm/musyx/runtime/snd_service.s
diff --git a/asm/musyx/snd_synthapi.s b/asm/musyx/runtime/snd_synthapi.s
similarity index 100%
rename from asm/musyx/snd_synthapi.s
rename to asm/musyx/runtime/snd_synthapi.s
diff --git a/asm/musyx/stream.s b/asm/musyx/runtime/stream.s
similarity index 100%
rename from asm/musyx/stream.s
rename to asm/musyx/runtime/stream.s
diff --git a/asm/musyx/synth.s b/asm/musyx/runtime/synth.s
similarity index 100%
rename from asm/musyx/synth.s
rename to asm/musyx/runtime/synth.s
diff --git a/asm/musyx/synth_ac.s b/asm/musyx/runtime/synth_ac.s
similarity index 100%
rename from asm/musyx/synth_ac.s
rename to asm/musyx/runtime/synth_ac.s
diff --git a/asm/musyx/synth_adsr.s b/asm/musyx/runtime/synth_adsr.s
similarity index 100%
rename from asm/musyx/synth_adsr.s
rename to asm/musyx/runtime/synth_adsr.s
diff --git a/asm/musyx/synth_dbtab.s b/asm/musyx/runtime/synth_dbtab.s
similarity index 100%
rename from asm/musyx/synth_dbtab.s
rename to asm/musyx/runtime/synth_dbtab.s
diff --git a/asm/musyx/synth_vsamples.s b/asm/musyx/runtime/synth_vsamples.s
similarity index 100%
rename from asm/musyx/synth_vsamples.s
rename to asm/musyx/runtime/synth_vsamples.s
diff --git a/asm/musyx/synthdata.s b/asm/musyx/runtime/synthdata.s
similarity index 100%
rename from asm/musyx/synthdata.s
rename to asm/musyx/runtime/synthdata.s
diff --git a/asm/musyx/synthmacros.s b/asm/musyx/runtime/synthmacros.s
similarity index 100%
rename from asm/musyx/synthmacros.s
rename to asm/musyx/runtime/synthmacros.s
diff --git a/asm/musyx/synthvoice.s b/asm/musyx/runtime/synthvoice.s
similarity index 100%
rename from asm/musyx/synthvoice.s
rename to asm/musyx/runtime/synthvoice.s
diff --git a/configure.py b/configure.py
index 2121276c..b3b3ef51 100755
--- a/configure.py
+++ b/configure.py
@@ -919,41 +919,43 @@ LIBS = [
     },
     {
         "lib": "musyx",
+        #"mw_version": "1.2.5",
+        #"cflags": "-nodefaults -fp hard -O0 -maxerrors 1 -enum int -str reuse -nosyspath -i include -i libc -use_lmw_stmw on -inline off",
         "mw_version": "1.3.2",
         "cflags": "$cflags_musyx",
         "host": False,
         "objects": [
-            "musyx/seq",
-            "musyx/synth",
-            ["musyx/seq_api", True],
-            ["musyx/snd_synthapi", True, {"add_to_all": False}],
-            ["musyx/stream", False],
-            "musyx/synthdata",
-            "musyx/synthmacros",
-            "musyx/synthvoice",
-            ["musyx/synth_ac", True],
-            "musyx/synth_adsr",
-            ["musyx/synth_vsamples", False],
-            ["musyx/synth_dbtab", True],
-            "musyx/s_data",
-            ["musyx/hw_dspctrl", False],
-            ["musyx/hw_volconv", False],
-            ["musyx/snd3d", False],
-            ["musyx/snd_init", True],
-            ["musyx/snd_math", True],
-            ["musyx/snd_midictrl", False],
-            ["musyx/snd_service", True],
-            ["musyx/hardware", True],
-            "musyx/hw_aramdma",
-            ["musyx/dsp_import", True],
-            ["musyx/hw_dolphin", True],
-            ["musyx/hw_memory", True],
-            ["musyx/creverb_fx", True],
-            "musyx/creverb",
-            ["musyx/reverb_fx", True],
-            ["musyx/reverb", False],
-            ["musyx/delay_fx", True],
-            ["musyx/chorus_fx", True],
+            "musyx/runtime/seq",
+            "musyx/runtime/synth",
+            ["musyx/runtime/seq_api", True],
+            ["musyx/runtime/snd_synthapi", True, {"add_to_all": False}],
+            ["musyx/runtime/stream", False],
+            "musyx/runtime/synthdata",
+            "musyx/runtime/synthmacros",
+            "musyx/runtime/synthvoice",
+            ["musyx/runtime/synth_ac", True],
+            "musyx/runtime/synth_adsr",
+            ["musyx/runtime/synth_vsamples", False],
+            ["musyx/runtime/synth_dbtab", True],
+            "musyx/runtime/s_data",
+            ["musyx/runtime/hw_dspctrl", False],
+            ["musyx/runtime/hw_volconv", False],
+            ["musyx/runtime/snd3d", False],
+            ["musyx/runtime/snd_init", True],
+            ["musyx/runtime/snd_math", True],
+            ["musyx/runtime/snd_midictrl", False],
+            ["musyx/runtime/snd_service", True],
+            ["musyx/runtime/hardware", True],
+            "musyx/runtime/hw_aramdma",
+            ["musyx/runtime/dsp_import", True],
+            ["musyx/runtime/hw_dolphin", True],
+            ["musyx/runtime/hw_memory", True],
+            ["musyx/runtime/CheapReverb/creverb_fx", True],
+            "musyx/runtime/CheapReverb/creverb",
+            ["musyx/runtime/StdReverb/reverb_fx", True],
+            ["musyx/runtime/StdReverb/reverb", False],
+            ["musyx/runtime/Delay/delay_fx", True],
+            ["musyx/runtime/Chorus/chorus_fx", True],
         ],
     },
     {
diff --git a/include/musyx/assert.h b/include/musyx/assert.h
index b6664204..0796ef94 100644
--- a/include/musyx/assert.h
+++ b/include/musyx/assert.h
@@ -5,12 +5,12 @@ extern void OSPanic(const char* file, int line, const char* msg, ...);
 
 #ifndef ASSERT
 #ifdef _DEBUG
-#define ASSERT(cond) \
-  do { \
-    if (!cond) { \
-      OSPanic(__FILE__, __LINE__, "Failed assertion " #cond); \
-    } \
-  } while(0)
+#define ASSERT(cond)                                                                               \
+  do {                                                                                             \
+    if (!cond) {                                                                                   \
+      OSPanic(__FILE__, __LINE__, "Failed assertion " #cond);                                      \
+    }                                                                                              \
+  } while (0)
 #else
 #define ASSERT(cond)
 #endif
@@ -18,15 +18,23 @@ extern void OSPanic(const char* file, int line, const char* msg, ...);
 
 #ifndef ASSERT_MSG
 #ifdef _DEBUG
-#define ASSERT_MSG(cond, msg) \
-  do { \
-    if (!cond) { \
-      OSPanic(__FILE__, __LINE__, msg); \
-    } \
-  } while(0)
+#define ASSERT_MSG(cond, msg)                                                                      \
+  do {                                                                                             \
+    if (!cond) {                                                                                   \
+      OSPanic(__FILE__, __LINE__, msg);                                                            \
+    }                                                                                              \
+  } while (0)
 #else
 #define ASSERT_MSG(cond, msg)
 #endif
 #endif
 
+#ifndef MUSY_DEBUG
+#if _DEBUG
+#define MUSY_DEBUG OSReport
+#else
+#define MUSY_DEBUG
+#endif
+#endif
+
 #endif // _MUSYX_ASSERT
diff --git a/include/musyx/musyx_priv.h b/include/musyx/musyx_priv.h
index ff683894..23a41c53 100644
--- a/include/musyx/musyx_priv.h
+++ b/include/musyx/musyx_priv.h
@@ -607,7 +607,7 @@ void sndConvertTicks(u32* out, u32 seconds);
 u32 sndConvert2Ms(u32 time);
 void hwActivateStudio(unsigned char studio, unsigned long isMaster, SND_STUDIO_TYPE type);
 void hwDeactivateStudio(u8);
-u32 hwIsActive(s32);
+u32 hwIsActive(u32);
 
 extern SND_HOOKS salHooks;
 extern u8 sndActive;
diff --git a/src/musyx/creverb_fx.c b/src/musyx/runtime/CheapReverb/creverb_fx.c
similarity index 100%
rename from src/musyx/creverb_fx.c
rename to src/musyx/runtime/CheapReverb/creverb_fx.c
diff --git a/src/musyx/chorus_fx.c b/src/musyx/runtime/Chorus/chorus_fx.c
similarity index 100%
rename from src/musyx/chorus_fx.c
rename to src/musyx/runtime/Chorus/chorus_fx.c
diff --git a/src/musyx/delay_fx.c b/src/musyx/runtime/Delay/delay_fx.c
similarity index 100%
rename from src/musyx/delay_fx.c
rename to src/musyx/runtime/Delay/delay_fx.c
diff --git a/src/musyx/reverb_fx.c b/src/musyx/runtime/StdReverb/reverb_fx.c
similarity index 100%
rename from src/musyx/reverb_fx.c
rename to src/musyx/runtime/StdReverb/reverb_fx.c
diff --git a/src/musyx/dsp_import.c b/src/musyx/runtime/dsp_import.c
similarity index 100%
rename from src/musyx/dsp_import.c
rename to src/musyx/runtime/dsp_import.c
diff --git a/src/musyx/hardware.c b/src/musyx/runtime/hardware.c
similarity index 94%
rename from src/musyx/hardware.c
rename to src/musyx/runtime/hardware.c
index c19ba604..cfc78fdd 100644
--- a/src/musyx/hardware.c
+++ b/src/musyx/runtime/hardware.c
@@ -1,5 +1,8 @@
+#include "musyx/assert.h"
 #include "musyx/musyx_priv.h"
 
+extern void OSReport(const char*, ...);
+
 extern void DCStoreRange(void* addr, u32 nBytes);
 
 static volatile const u16 itdOffTab[128] = {
@@ -65,29 +68,30 @@ void snd_handle_irq() {
   hwIRQLeaveCritical();
 }
 
-s32 hwInit(u32 * frq, u16 numVoices, u16 numStudios, u32 flags) {
+s32 hwInit(u32* frq, u16 numVoices, u16 numStudios, u32 flags) {
+  MUSY_DEBUG("Entering hwInit()\n\n");
   hwInitIrq();
   salFrame = 0;
   salAuxFrame = 0;
   salMessageCallback = NULL;
-  if (salInitAi(snd_handle_irq, flags, frq) == 0) {
-    // OSReport("Could not initialize AI.\n");
-  } else {
-    // OSReport("salInitAi() is done.\n\n");
-    if (salInitDspCtrl(numVoices, numStudios, (flags & 1) != 0) == 0) {
-      // OSReport("Could not initialize DSP control logic.\n");
-    } else {
-      // OSReport("salInitDspCtrl() is done.\n\n");
+  if (salInitAi(snd_handle_irq, flags, frq) != 0) {
+    MUSY_DEBUG("salInitAi() is done.\n\n");
+    if (salInitDspCtrl(numVoices, numStudios, (flags & 1) != 0) != 0) {
+      MUSY_DEBUG("salInitDspCtrl() is done.\n\n");
       if (salInitDsp(flags)) {
-        // OSReport("salInitDsp() is done.\n\n");
+        MUSY_DEBUG("salInitDsp() is done.\n\n");
         hwEnableIrq();
-        // OSReport("Starting AI DMA...\n\n");
+        MUSY_DEBUG("Starting AI DMA...\n\n");
         salStartAi();
-        // OSReport("hwInit() done.\n\n");
+        MUSY_DEBUG("hwInit() done.\n\n");
         return 0;
       }
-      // OSReport("Could not initialize DSP.\n");
+      MUSY_DEBUG("Could not initialize DSP.\n");
+    } else {
+      MUSY_DEBUG("Could not initialize DSP control logic.\n");
     }
+  } else {
+    MUSY_DEBUG("Could not initialize AI.\n");
   }
   return -1;
 }
@@ -105,7 +109,7 @@ void hwSetTimeOffset(u8 offset) { salTimeOffset = offset; }
 
 u8 hwGetTimeOffset() { return salTimeOffset; }
 
-u32 hwIsActive(s32 idx) { return dspVoice[idx].state != 0; }
+u32 hwIsActive(u32 v) { return dspVoice[v].state != 0; }
 
 void hwSetMesgCallback(SND_MESSAGE_CALLBACK callback) { salMessageCallback = callback; }
 
@@ -292,9 +296,12 @@ void hwSetITDMode(u32 v, u8 mode) {
   dspVoice[v].flags &= ~0x80000000;
 }
 
+
+#define  hwGetITDMode(dsp_vptr) (dsp_vptr->flags & 0x80000000)
+
 void hwSetVolume(unsigned long v, unsigned char table, float vol, unsigned long pan,
                  unsigned long span, float auxa, float auxb) {
-  struct SAL_VOLINFO vi;             // r1+0x24
+  SAL_VOLINFO vi;                    // r1+0x24
   unsigned short il;                 // r30
   unsigned short ir;                 // r29
   unsigned short is;                 // r28
@@ -353,8 +360,8 @@ void hwSetVolume(unsigned long v, unsigned char table, float vol, unsigned long
     dsp_vptr->lastUpdate.volB = 0;
   }
 
-  if (dsp_vptr->flags & 0x80000000) {
-    SetupITD(dsp_vptr, pan >> 16);
+  if (hwGetITDMode(dsp_vptr)) {
+    SetupITD(dsp_vptr, (pan >> 16) & 0xFF);
   }
 }
 
@@ -538,7 +545,7 @@ void hwDisableHRTF() { dspHRTFOn = FALSE; }
 
 u32 hwGetVirtualSampleID(u32 v) {
   if (dspVoice[v].state == 0) {
-    return ~0;
+    return 0xFFFFFFFF;
   }
 
   return dspVoice[v].virtualSampleID;
diff --git a/src/musyx/hw_dolphin.c b/src/musyx/runtime/hw_dolphin.c
similarity index 100%
rename from src/musyx/hw_dolphin.c
rename to src/musyx/runtime/hw_dolphin.c
diff --git a/src/musyx/hw_dspctrl.c b/src/musyx/runtime/hw_dspctrl.c
similarity index 100%
rename from src/musyx/hw_dspctrl.c
rename to src/musyx/runtime/hw_dspctrl.c
diff --git a/src/musyx/hw_memory.c b/src/musyx/runtime/hw_memory.c
similarity index 100%
rename from src/musyx/hw_memory.c
rename to src/musyx/runtime/hw_memory.c
diff --git a/src/musyx/hw_volconv.c b/src/musyx/runtime/hw_volconv.c
similarity index 100%
rename from src/musyx/hw_volconv.c
rename to src/musyx/runtime/hw_volconv.c
diff --git a/src/musyx/reverb.c b/src/musyx/runtime/reverb.c
similarity index 100%
rename from src/musyx/reverb.c
rename to src/musyx/runtime/reverb.c
diff --git a/src/musyx/seq_api.c b/src/musyx/runtime/seq_api.c
similarity index 100%
rename from src/musyx/seq_api.c
rename to src/musyx/runtime/seq_api.c
diff --git a/src/musyx/snd3d.c b/src/musyx/runtime/snd3d.c
similarity index 100%
rename from src/musyx/snd3d.c
rename to src/musyx/runtime/snd3d.c
diff --git a/src/musyx/snd_init.c b/src/musyx/runtime/snd_init.c
similarity index 100%
rename from src/musyx/snd_init.c
rename to src/musyx/runtime/snd_init.c
diff --git a/src/musyx/snd_math.c b/src/musyx/runtime/snd_math.c
similarity index 100%
rename from src/musyx/snd_math.c
rename to src/musyx/runtime/snd_math.c
diff --git a/src/musyx/snd_midictrl.c b/src/musyx/runtime/snd_midictrl.c
similarity index 100%
rename from src/musyx/snd_midictrl.c
rename to src/musyx/runtime/snd_midictrl.c
diff --git a/src/musyx/snd_service.c b/src/musyx/runtime/snd_service.c
similarity index 100%
rename from src/musyx/snd_service.c
rename to src/musyx/runtime/snd_service.c
diff --git a/src/musyx/snd_synthapi.c b/src/musyx/runtime/snd_synthapi.c
similarity index 100%
rename from src/musyx/snd_synthapi.c
rename to src/musyx/runtime/snd_synthapi.c
diff --git a/src/musyx/stream.c b/src/musyx/runtime/stream.c
similarity index 100%
rename from src/musyx/stream.c
rename to src/musyx/runtime/stream.c
diff --git a/src/musyx/synth_ac.c b/src/musyx/runtime/synth_ac.c
similarity index 100%
rename from src/musyx/synth_ac.c
rename to src/musyx/runtime/synth_ac.c
diff --git a/src/musyx/synth_dbtab.c b/src/musyx/runtime/synth_dbtab.c
similarity index 100%
rename from src/musyx/synth_dbtab.c
rename to src/musyx/runtime/synth_dbtab.c
diff --git a/src/musyx/synth_vsamples.c b/src/musyx/runtime/synth_vsamples.c
similarity index 100%
rename from src/musyx/synth_vsamples.c
rename to src/musyx/runtime/synth_vsamples.c