diff --git a/configure.py b/configure.py
index 7e3b0e90..9abe9527 100755
--- a/configure.py
+++ b/configure.py
@@ -930,11 +930,11 @@ LIBS = [
             ["musyx/runtime/seq_api", True],
             ["musyx/runtime/snd_synthapi", True, {"add_to_all": False}],
             ["musyx/runtime/stream", False],
-            "musyx/runtime/synthdata",
+            ["musyx/runtime/synthdata", False],
             "musyx/runtime/synthmacros",
             ["musyx/runtime/synthvoice", False],
             ["musyx/runtime/synth_ac", True],
-            "musyx/runtime/synth_adsr",
+            ["musyx/runtime/synth_adsr", False],
             ["musyx/runtime/synth_vsamples", False],
             ["musyx/runtime/synth_dbtab", True],
             ["musyx/runtime/s_data", True],
diff --git a/include/musyx/musyx_priv.h b/include/musyx/musyx_priv.h
index dab2ee2a..514d072d 100644
--- a/include/musyx/musyx_priv.h
+++ b/include/musyx/musyx_priv.h
@@ -250,6 +250,43 @@ typedef struct SDIR_DATA {
   unsigned long extraData;     // offset 0x1C, size 0x4
 } SDIR_DATA;
 
+typedef struct SDIR_TAB {
+  // total size: 0xC
+  struct SDIR_DATA* data; // offset 0x0, size 0x4
+  void* base;             // offset 0x4, size 0x4
+  unsigned short numSmp;  // offset 0x8, size 0x2
+  unsigned short res;     // offset 0xA, size 0x2
+} SDIR_TAB;
+
+typedef struct DATA_TAB {
+  // total size: 0x8
+  void* data;              // offset 0x0, size 0x4
+  unsigned short id;       // offset 0x4, size 0x2
+  unsigned short refCount; // offset 0x6, size 0x2
+} DATA_TAB;
+
+typedef struct LAYER_TAB {
+  // total size: 0xC
+  void* data;              // offset 0x0, size 0x4
+  unsigned short id;       // offset 0x4, size 0x2
+  unsigned short num;      // offset 0x6, size 0x2
+  unsigned short refCount; // offset 0x8, size 0x2
+  unsigned short reserved; // offset 0xA, size 0x2
+} LAYER_TAB;
+
+typedef struct MAC_MAINTAB {
+  // total size: 0x4
+  unsigned short num;         // offset 0x0, size 0x2
+  unsigned short subTabIndex; // offset 0x2, size 0x2
+} MAC_MAINTAB;
+
+typedef struct MAC_SUBTAB {
+  // total size: 0x8
+  void* data;              // offset 0x0, size 0x4
+  unsigned short id;       // offset 0x4, size 0x2
+  unsigned short refCount; // offset 0x6, size 0x2
+} MAC_SUBTAB;
+
 typedef struct GSTACK {
   // total size: 0xC
   struct GROUP_DATA* gAddr;   // offset 0x0, size 0x4
@@ -732,7 +769,7 @@ extern DSPstudioinfo dspStudio[8];
 extern SYNTH_VOICE* synthVoice;
 
 extern DSPvoice* dspVoice;
-typedef s32 (*SND_COMPARE)(u16*, u8*);
+typedef s32 (*SND_COMPARE)(void*, void*);
 
 typedef struct FX_TAB {
   // total size: 0xA
@@ -753,6 +790,13 @@ typedef struct FX_DATA {
   struct FX_TAB fx[1];      // offset 0x4, size 0xA
 } FX_DATA;
 
+typedef struct FX_GROUP {
+	// total size: 0x8
+	unsigned short gid; // offset 0x0, size 0x2
+	unsigned short fxNum; // offset 0x2, size 0x2
+	struct FX_TAB * fxTab; // offset 0x4, size 0x4
+} FX_GROUP;
+
 typedef struct PAGE {
   // total size: 0x6
   unsigned short macro;    // offset 0x0, size 0x2
@@ -778,7 +822,7 @@ typedef struct MIDISETUP {
   MIDI_CHANNEL_SETUP channel[16]; // offset 0x4, size 0x50
 } MIDISETUP;
 
-void dataInit(u32, s32); /* extern */
+void dataInit(u32, u32); /* extern */
 void dataInitStack();    /* extern */
 u32 dataInsertSDir(SDIR_DATA* sdir, void* smp_data);
 u32 dataRemoveSDir(SDIR_DATA* sdir);
@@ -821,7 +865,7 @@ void synthKillVoicesByMacroReferences(u16* ref);
 void synthExit();
 u16 sndRand(void);
 s16 sndSin(u16 angle);
-u8* sndBSearch(u16* key, u8* subTab, s32 mainTab, s32 len, SND_COMPARE cmp);
+void* sndBSearch(void* key, void* base, s32 num, s32 len, SND_COMPARE cmp);
 void sndConvertMs(u32* time);
 void sndConvertTicks(u32* out, SYNTH_VOICE* svoice);
 u32 sndConvert2Ms(u32 time);
@@ -864,7 +908,6 @@ void salFree(void* addr);
 #define SAL_MAX_STUDIONUM 8
 extern u8 salMaxStudioNum;
 extern u8 salNumVoices;
-extern float dspDLSVolTab[128];
 
 /* Stream */
 typedef s32 (*SND_STREAM_UPDATE_CALLBACK)(void* buffer1, u32 len1, void* buffer2, u32 len2,
diff --git a/src/musyx/runtime/snd_service.c b/src/musyx/runtime/snd_service.c
index f3a0653a..5131a6af 100644
--- a/src/musyx/runtime/snd_service.c
+++ b/src/musyx/runtime/snd_service.c
@@ -94,19 +94,19 @@ s16 sndSin(u16 angle) {
   return -sndSintab[SINTAB_ELEMENT_COUNT - (angle & SINTAB_ELEMENT_COUNT)];
 }
 
-u8* sndBSearch(u16* key, u8* subTab, s32 mainTab, s32 len, SND_COMPARE cmp) {
+void* sndBSearch(void* key, void* base, s32 num, s32 len, SND_COMPARE cmp) {
   s32 left;
   s32 right;
   s32 mid;
   s32 found;
   u8* test;
 
-  if (mainTab != 0) {
+  if (num != 0) {
     left = 1;
-    right = mainTab;
+    right = num;
     do {
       mid = ((left + right) >> 1);
-      test = subTab + (len * (mid - 1));
+      test = (u8*)(u32)base + (len * (mid - 1));
       found = (*cmp)(key, test);
       if (found == 0) {
         return test;
diff --git a/src/musyx/runtime/synth_adsr.c b/src/musyx/runtime/synth_adsr.c
new file mode 100644
index 00000000..98bb4353
--- /dev/null
+++ b/src/musyx/runtime/synth_adsr.c
@@ -0,0 +1,58 @@
+#include "musyx/assert.h"
+#include "musyx/musyx_priv.h"
+#include "musyx/synth_dbtab.h"
+
+#include <float.h>
+
+extern float powf(float, float);
+
+static u32 adsrGetIndex(ADSR_VARS* adsr) {
+  long i = 193 - ((adsr->currentIndex + 0x8000) >> 16);
+  return i < 0 ? 0 : i;
+}
+
+u32 adsrConvertTimeCents(long tc) { return 1000.f * powf(2.f, 1.2715658e-08f * tc); }
+
+u32 salChangeADSRState(ADSR_VARS* adsr) {
+  u32 VoiceDone; // r30
+}
+
+u32 adsrSetup(ADSR_VARS* adsr) {
+  adsr->state = 0;
+  salChangeADSRState(adsr);
+}
+
+u32 adsrStartRelease(ADSR_VARS* adsr, u32 rtime) {
+  switch (adsr->mode) {
+  case 0:
+    adsr->state = 4;
+    adsr->cnt = rtime;
+    if (rtime == 0) {
+      adsr->cnt = 1;
+      adsr->currentDelta = 0;
+      return 1;
+    }
+    adsr->currentDelta = -(adsr->currentVolume / rtime);
+    break;
+  case 1:
+    if (adsr->data.dls.aMode == 0 && adsr->state == 1) {
+      adsr->currentIndex = (193 - dspScale2IndexTab[adsr->currentVolume >> 21]) * 0x10000;
+    }
+
+    adsr->cnt = (u32)(3.238342E-4f * (float)adsr->currentIndex * (float)rtime) >> 12;
+    adsr->state = 4;
+    if (adsr->cnt == 0) {
+      adsr->cnt = 1;
+      adsr->currentDelta = adsr->currentIndex = adsr->currentVolume = 0;
+      return 1;
+    }
+
+    adsr->currentDelta = -(adsr->currentIndex / adsr->cnt);
+    break;
+  }
+
+  return 0;
+}
+
+u32 adsrRelease(ADSR_VARS* adsr) {
+}
diff --git a/src/musyx/runtime/synthdata.c b/src/musyx/runtime/synthdata.c
new file mode 100644
index 00000000..8a881f60
--- /dev/null
+++ b/src/musyx/runtime/synthdata.c
@@ -0,0 +1,217 @@
+#include "musyx/assert.h"
+#include "musyx/musyx_priv.h"
+
+static u16 dataSmpSDirNum = 0;
+static SDIR_TAB dataSmpSDirs[128];
+static u16 dataCurveNum = 0;
+static DATA_TAB dataCurveTab[2048];
+static u16 dataKeymapNum = 0;
+static DATA_TAB dataKeymapTab[256];
+static u16 dataLayerNum = 0;
+static LAYER_TAB dataLayerTab[256];
+static u16 dataMacTotal = 0;
+static MAC_MAINTAB dataMacMainTab[512];
+static MAC_SUBTAB dataMacSubTabmem[2048];
+static u16 dataFXGroupNum = 0;
+static FX_GROUP dataFXGroups[128];
+
+u32 dataInsertKeymap(u16 cid, void* keymapdata) {
+  long i; // r31
+  long j; // r29
+}
+
+unsigned long dataRemoveKeymap(unsigned short sid) {
+  long i; // r31
+  long j; // r30
+}
+unsigned long dataInsertLayer(unsigned short cid, void* layerdata, unsigned short size) {
+  long i; // r31
+  long j; // r29
+}
+unsigned long dataRemoveLayer(unsigned short sid) {
+  long i; // r31
+  long j; // r30
+}
+unsigned long dataInsertCurve(unsigned short cid, void* curvedata) {
+  long i; // r31
+  long j; // r29
+}
+unsigned long dataRemoveCurve(unsigned short sid) {
+  long i; // r31
+  long j; // r30
+}
+unsigned long dataInsertSDir(struct SDIR_DATA* sdir, void* smp_data) {
+  long i;              // r31
+  struct SDIR_DATA* s; // r25
+  unsigned short n;    // r27
+  unsigned short j;    // r29
+  unsigned short k;    // r26
+}
+unsigned long dataRemoveSDir(struct SDIR_DATA* sdir) {
+  long i;                 // r28
+  long j;                 // r30
+  long index;             // r27
+  struct SDIR_DATA* data; // r31
+}
+unsigned long dataAddSampleReference(unsigned short sid) {
+  unsigned long i;              // r29
+  struct SAMPLE_HEADER* header; // r1+0xC
+  struct SDIR_DATA* data;       // r30
+  struct SDIR_DATA* sdir;       // r31
+}
+unsigned long dataRemoveSampleReference(unsigned short sid) {
+  unsigned long i;        // r30
+  struct SDIR_DATA* sdir; // r31
+}
+unsigned long dataInsertFX(unsigned short gid, struct FX_TAB* fx, unsigned short fxNum) {
+  long i; // r31
+}
+unsigned long dataRemoveFX(unsigned short gid) {
+  long i; // r31
+  long j; // r30
+}
+unsigned long dataInsertMacro(unsigned short mid, void* macroaddr) {
+  long main; // r28
+  long pos;  // r29
+  long base; // r27
+  long i;    // r31
+}
+unsigned long dataRemoveMacro(unsigned short mid) {
+  long main; // r29
+  long base; // r28
+  long i;    // r31
+}
+long maccmp(void* p1, void* p2) { return ((MAC_SUBTAB*)p1)->id - ((MAC_SUBTAB*)p2)->id; }
+
+struct MSTEP* dataGetMacro(unsigned short mid) {
+  static s32 base;
+  static s32 main;
+  static MAC_SUBTAB key;
+  static MAC_SUBTAB* result;
+
+  main = (mid >> 6) & 0x3fff;
+
+  if (dataMacMainTab[main].num != 0) {
+    base = dataMacMainTab[main].subTabIndex;
+    key.id = mid;
+    if ((result = (MAC_SUBTAB*)sndBSearch(&key, &dataMacSubTabmem[base], dataMacMainTab[main].num,
+                                          8, maccmp)) != NULL) {
+      return result->data;
+    }
+  }
+
+  return NULL;
+}
+
+long smpcmp(void* p1, void* p2) { return ((SDIR_DATA*)p1)->id - ((SDIR_DATA*)p2)->id; }
+
+long dataGetSample(unsigned short sid, SAMPLE_INFO* newsmp) {
+  static s32 base;
+  static s32 main;
+  static SDIR_DATA key;
+  static SDIR_DATA* result;
+  static SAMPLE_HEADER* sheader;
+  long i; // r30
+
+  key.id = sid;
+
+  for (i = 0; i < dataSmpSDirNum; ++i) {
+    if ((result = sndBSearch(&key, dataSmpSDirs[i].data, dataSmpSDirs[i].numSmp, sizeof(SDIR_DATA),
+                             smpcmp)) != NULL) {
+      if (result->ref_cnt != 0xFFFF) {
+        sheader = &result->header;
+        newsmp->info = sheader->info;
+        newsmp->addr = result->addr;
+        newsmp->offset = 0;
+        newsmp->loop = sheader->loopOffset;
+        newsmp->length = sheader->length & 0xffffff;
+        newsmp->loopLength = sheader->loopLength;
+        newsmp->compType = sheader->length >> 24;
+
+        if (result->extraData) {
+          newsmp->extraData = (void*)((u32) & (dataSmpSDirs[i].data)->id + result->extraData);
+        }
+        return 0;
+      }
+    }
+  }
+
+  return -1;
+}
+
+long curvecmp(void* p1, void* p2) { return ((DATA_TAB*)p1)->id - ((DATA_TAB*)p2)->id; }
+
+void* dataGetCurve(unsigned short cid) {
+  static DATA_TAB key;
+  static DATA_TAB* result;
+
+  key.id = cid;
+  if (result =
+          (DATA_TAB*)sndBSearcH(&key, dataCurveTab, dataCurveNum, sizeof(DATA_TAB), curvecmp)) {
+    return result->data;
+  }
+  return NULL;
+}
+
+void* dataGetKeymap(unsigned short cid) {
+  static DATA_TAB key;
+  static DATA_TAB* result;
+
+  key.id = cid;
+  if (result =
+          (DATA_TAB*)sndBSearcH(&key, dataCurveTab, dataCurveNum, sizeof(DATA_TAB), curvecmp)) {
+    return result->data;
+  }
+  return NULL;
+}
+
+long layercmp(void* p1, void* p2) { return ((LAYER_TAB*)p1)->id - ((LAYER_TAB*)p2)->id; }
+
+void* dataGetLayer(unsigned short cid, unsigned short* n) {
+  static LAYER_TAB key;
+  static LAYER_TAB* result;
+
+  key.id = cid;
+  if (result =
+          (LAYER_TAB*)sndBSearcH(&key, dataLayerTab, dataLayerNum, sizeof(LAYER_TAB), layercmp)) {
+    *n = result->num;
+    return result->data;
+  }
+  return NULL;
+}
+
+long fxcmp(void* p1, void* p2) { return ((FX_TAB*)p1)->id - ((FX_TAB*)p2)->id; }
+
+struct FX_TAB* dataGetFX(unsigned short fid) {
+  static FX_TAB key;
+  FX_TAB* ret; // r29
+  long i;      // r31
+
+  key.id = fid;
+  for (i = 0; i < dataFXGroupNum; ++i) {
+    if ((ret = (FX_TAB*)sndBSearch(&key, dataFXGroups[i].fxTab, dataFXGroups[i].fxNum,
+                                   sizeof(FX_TAB), fxcmp))) {
+      return ret;
+    }
+  }
+
+  return NULL;
+}
+
+void dataInit(u32 smpBase, u32 smpLength) {
+  long i; // r31
+
+  dataSmpSDirNum = 0;
+  dataCurveNum = 0;
+  dataKeymapNum = 0;
+  dataLayerNum = 0;
+  dataFXGroupNum = 0;
+  dataMacTotal = 0;
+  for (i = 0; i < 512; ++i) {
+    dataMacMainTab[i].num = 0;
+    dataMacMainTab[i].subTabIndex = 0;
+  }
+  hwInitSampleMem(smpBase, smpLength);
+}
+
+void dataExit() { hwExitSampleMem(); }