From b17694c6a35e886ada9783c87de53ee757ab7f6c Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Sat, 21 May 2022 01:34:43 -0500
Subject: [PATCH] Namco WSG: 3 channel WSG now works

---
 src/engine/platform/namcowsg.cpp    | 26 ++++++++++++++++++--------
 src/engine/platform/sound/namco.cpp | 16 ++++++++++++++--
 src/engine/platform/sound/namco.h   |  8 +++++++-
 3 files changed, 39 insertions(+), 11 deletions(-)

diff --git a/src/engine/platform/namcowsg.cpp b/src/engine/platform/namcowsg.cpp
index 7b26667bf..caaba85a1 100644
--- a/src/engine/platform/namcowsg.cpp
+++ b/src/engine/platform/namcowsg.cpp
@@ -24,7 +24,7 @@
 //#define rWrite(a,v) pendingWrites[a]=v;
 #define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
 
-#define CHIP_FREQBASE 524288
+#define CHIP_FREQBASE 2097152
 
 const char* regCheatSheetNamcoWSG[]={
   "Select", "0",
@@ -83,7 +83,6 @@ void DivPlatformNamcoWSG::acquire(short* bufL, short* bufR, size_t start, size_t
 }
 
 void DivPlatformNamcoWSG::updateWave(int ch) {
-  printf("UPDATE NAMCO WAVE\n");
   for (int i=0; i<32; i++) {
     namco->update_namco_waveform(i+ch*32,chan[ch].ws.output[i]);
   }
@@ -150,7 +149,6 @@ void DivPlatformNamcoWSG::tick(bool sysTick) {
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
       //DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_PCE);
       chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE);
-      printf("f: %d\n",chan[i].freq);
       if (chan[i].freq>1048575) chan[i].freq=1048575;
       if (chan[i].keyOn) {
       }
@@ -163,10 +161,22 @@ void DivPlatformNamcoWSG::tick(bool sysTick) {
   }
 
   // update state
-  rWrite(0x15,chan[0].outVol);
-  rWrite(0x1a,chan[1].outVol);
-  rWrite(0x1f,chan[2].outVol);
-  printf("%d %d %d\n",chan[0].outVol,chan[1].outVol,chan[2].outVol);
+  if (chan[0].active) {
+    rWrite(0x15,chan[0].outVol);
+  } else {
+    rWrite(0x15,0);
+  }
+  if (chan[1].active) {
+    rWrite(0x1a,chan[1].outVol);
+  } else {
+    rWrite(0x1a,0);
+  }
+  if (chan[2].active) {
+    rWrite(0x1f,chan[2].outVol);
+  } else {
+    rWrite(0x1f,0);
+  }
+  //printf("%d %d %d\n",chan[0].outVol,chan[1].outVol,chan[2].outVol);
 
   rWrite(0x10,(chan[0].freq)&15);
   rWrite(0x11,(chan[0].freq>>4)&15);
@@ -415,7 +425,7 @@ void DivPlatformNamcoWSG::setDeviceType(int type) {
 
 void DivPlatformNamcoWSG::setFlags(unsigned int flags) {
   chipClock=3072000;
-  rate=chipClock/16;
+  rate=chipClock/32;
   namco->device_clock_changed(rate);
   for (int i=0; i<chans; i++) {
     oscBuf[i]->rate=rate;
diff --git a/src/engine/platform/sound/namco.cpp b/src/engine/platform/sound/namco.cpp
index 45daad21c..851c314b0 100644
--- a/src/engine/platform/sound/namco.cpp
+++ b/src/engine/platform/sound/namco.cpp
@@ -129,7 +129,6 @@ void namco_audio_device::device_clock_changed(int clk)
 /* update the decoded waveform data */
 void namco_audio_device::update_namco_waveform(int offset, uint8_t data)
 {
-        printf("writing %d to %d\n",data,offset);
 	if (m_wave_size == 1)
 	{
 		int16_t wdata;
@@ -188,6 +187,20 @@ void namco_audio_device::sound_enable_w(int state)
 	m_sound_enable = state;
 }
 
+void namco_device::device_start(unsigned char* wavePtr) {
+  memset(m_soundregs,0,1024);
+  namco_audio_device::device_start(wavePtr);
+}
+
+void namco_15xx_device::device_start(unsigned char* wavePtr) {
+  memset(m_soundregs,0,1024);
+  namco_audio_device::device_start(wavePtr);
+}
+
+void namco_cus30_device::device_start(unsigned char* wavePtr) {
+  namco_audio_device::device_start(wavePtr);
+}
+
 
 /********************************************************************************/
 
@@ -235,7 +248,6 @@ void namco_device::pacman_sound_w(int offset, uint8_t data)
 	{
 	case 0x05:
 		voice->waveform_select = data & 7;
-                printf("selecting waveform %d\n",data);
 		break;
 
 	case 0x10:
diff --git a/src/engine/platform/sound/namco.h b/src/engine/platform/sound/namco.h
index 9a42876d9..507eaed29 100644
--- a/src/engine/platform/sound/namco.h
+++ b/src/engine/platform/sound/namco.h
@@ -36,7 +36,7 @@ public:
 	namco_audio_device(uint32_t clock);
 
 	// device-level overrides
-	void device_start(unsigned char* wavePtr);
+	virtual void device_start(unsigned char* wavePtr);
 	void device_clock_changed(int clk);
 
 	// internal state
@@ -82,6 +82,8 @@ public:
 	uint8_t polepos_sound_r(int offset);
 	void polepos_sound_w(int offset, uint8_t data);
 
+  void device_start(unsigned char* wavePtr);
+
         ~namco_device() {}
 
 private:
@@ -98,6 +100,8 @@ public:
 	uint8_t sharedram_r(int offset);
 	void sharedram_w(int offset, uint8_t data);
 
+  void device_start(unsigned char* wavePtr);
+
        ~namco_15xx_device() {}
 
 private:
@@ -116,6 +120,8 @@ public:
 
 	void pacman_sound_w(int offset, uint8_t data);
 
+  void device_start(unsigned char* wavePtr);
+
         ~namco_cus30_device() {}
 };