diff --git a/papers/doc/7-systems/k007232.md b/papers/doc/7-systems/k007232.md
index 1e5dc768..adf7d95f 100644
--- a/papers/doc/7-systems/k007232.md
+++ b/papers/doc/7-systems/k007232.md
@@ -1,6 +1,6 @@
 # Konami K007232
 
-a Konami's 2 channel PCM sound chip was used in their arcade boards in 1986-1990.
+a 2-channel PCM sound chip from Konami which was used in some of their 1986-1990 arcade boards.
 
 Its sample format is unique; the topmost bit is the end marker, and the low 7 bits are used for generating sound (unsigned format).
 
diff --git a/papers/format.md b/papers/format.md
index 25304378..685e1aef 100644
--- a/papers/format.md
+++ b/papers/format.md
@@ -1630,10 +1630,6 @@ chips which aren't on this list don't have any flags.
 - bit 16-19: outDepth (int)
 - bit 20: stereo (bool)
 
-## (Placeholder): Konami K007232
-
-- bit 0: stereo (bool)
-
 ## 0xe0: QSound
 
 - bit 0-11: echoDelay (int)
diff --git a/src/engine/fileOps.cpp b/src/engine/fileOps.cpp
index 328a28ed..b39aa344 100644
--- a/src/engine/fileOps.cpp
+++ b/src/engine/fileOps.cpp
@@ -1571,9 +1571,6 @@ void DivEngine::convertOldFlags(unsigned int oldFlags, DivConfig& newFlags, DivS
       newFlags.set("echoDelay",(int)(oldFlags&0xfff));
       newFlags.set("echoFeedback",(int)((oldFlags>>12)&255));
       break;
-    case DIV_SYSTEM_K007232:
-      if (oldFlags&1) newFlags.set("stereo",true);
-      break;
     default:
       break;
   }
diff --git a/src/engine/platform/k007232.cpp b/src/engine/platform/k007232.cpp
index 6268ab0a..7097f186 100644
--- a/src/engine/platform/k007232.cpp
+++ b/src/engine/platform/k007232.cpp
@@ -128,14 +128,14 @@ void DivPlatformK007232::tick(bool sysTick) {
     if (chan[i].std.panL.had) {
       chan[i].panning&=0xf0;
       chan[i].panning|=chan[i].std.panL.val&15;
-      if (!isMuted[i] && stereo) {
+      if ((!isMuted[i]) && stereo) {
         chan[i].volumeChanged=true;
       }
     }
     if (chan[i].std.panR.had) {
       chan[i].panning&=0x0f;
       chan[i].panning|=(chan[i].std.panR.val&15)<<4;
-      if (!isMuted[i] && stereo) {
+      if ((!isMuted[i]) && stereo) {
         chan[i].volumeChanged=true;
       }
     }
@@ -158,7 +158,7 @@ void DivPlatformK007232::tick(bool sysTick) {
       else {
         chan[i].lvol=chan[i].rvol=isMuted[i]?0:chan[i].outVol&0xf;
         const unsigned char prevVolume=lastVolume;
-        lastVolume=(lastVolume&~(0xf<<(i<<2)))|((chan[i].outVol&0xf)<<(i<<2));
+        lastVolume=(lastVolume&~(0xf<<(i<<2)))|((chan[i].lvol&0xf)<<(i<<2));
         if (prevVolume!=lastVolume) {
           rWrite(0xc,lastVolume);
         }
diff --git a/src/engine/platform/k007232.h b/src/engine/platform/k007232.h
index 8b42b510..4bd6d4f7 100644
--- a/src/engine/platform/k007232.h
+++ b/src/engine/platform/k007232.h
@@ -95,6 +95,7 @@ class DivPlatformK007232: public DivDispatch, public k007232_intf {
   friend void putDispatchChip(void*,int);
   friend void putDispatchChan(void*,int,int);
 
+  void chWrite(unsigned char ch, unsigned int addr, unsigned char val);
   public:
     u8 read_sample(u8 ne, u32 address);
     void acquire(short* bufL, short* bufR, size_t start, size_t len);
@@ -128,8 +129,6 @@ class DivPlatformK007232: public DivDispatch, public k007232_intf {
       DivDispatch(),
       k007232_intf(),
       k007232(*this) {}
-  private:
-    void chWrite(unsigned char ch, unsigned int addr, unsigned char val);
 };
 
 #endif
diff --git a/src/engine/sysDef.cpp b/src/engine/sysDef.cpp
index 8dff95b2..674344da 100644
--- a/src/engine/sysDef.cpp
+++ b/src/engine/sysDef.cpp
@@ -1694,7 +1694,7 @@ void DivEngine::registerSystems() {
   );
 
   sysDefs[DIV_SYSTEM_K007232]=new DivSysDef(
-    "Konami K007232", NULL, 0xc1 /*Placeholder*/, 0, 2, false, true, 0, false, 1U<<DIV_SAMPLE_DEPTH_8BIT,
+    "Konami K007232", NULL, 0xc1, 0, 2, false, true, 0, false, 1U<<DIV_SAMPLE_DEPTH_8BIT,
     "this PCM chip was widely used at Konami arcade boards in 1986-1990.",
     {"Channel 1", "Channel 2"},
     {"CH1", "CH2"},