diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index 94098ee0..d8bbaf03 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -2032,7 +2032,7 @@ SafeWriter* DivEngine::saveVGM() {
   int hasOPN2=0;
   int hasOPM=0;
   int hasSegaPCM=0;
-  int segaPCMOffset=0x2000;
+  int segaPCMOffset=0xf8000d;
   int hasRFC=0;
   int hasOPN=0;
   int hasOPNA=0;
@@ -2281,24 +2281,28 @@ SafeWriter* DivEngine::saveVGM() {
     size_t memPos=0;
     for (int i=0; i<song.sampleLen; i++) {
       DivSample* sample=song.sample[i];
+      if ((memPos&0xff0000)!=((memPos+sample->rendLength)&0xff0000)) {
+        memPos=(memPos+0xffff)&0xff0000;
+      }
+      if (memPos>=16777216) break;
       sample->rendOffP=memPos;
       unsigned int alignedSize=(sample->rendLength+0xff)&(~0xff);
       if (alignedSize>65536) alignedSize=65536;
       if (sample->depth==8) {
         for (unsigned int j=0; j<alignedSize; j++) {
           if (j>=sample->rendLength) {
-            pcmMem[memPos++]=0;
+            pcmMem[memPos++]=0x80;
           } else {
-            pcmMem[memPos++]=((unsigned char)sample->rendData[j]);
+            pcmMem[memPos++]=((unsigned char)sample->rendData[j]+0x80);
           }
           if (memPos>=16777216) break;
         }
       } else {
         for (unsigned int j=0; j<alignedSize; j++) {
           if (j>=sample->rendLength) {
-            pcmMem[memPos++]=0;
+            pcmMem[memPos++]=0x80;
           } else {
-            pcmMem[memPos++]=(((unsigned short)sample->rendData[j])>>8);
+            pcmMem[memPos++]=(((unsigned short)sample->rendData[j]+0x8000)>>8);
           }
           if (memPos>=16777216) break;
         }
diff --git a/src/engine/platform/arcade.cpp b/src/engine/platform/arcade.cpp
index fa0efebf..748fcaaa 100644
--- a/src/engine/platform/arcade.cpp
+++ b/src/engine/platform/arcade.cpp
@@ -240,7 +240,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
           if (chan[c.chan].pcm.sample<0 || chan[c.chan].pcm.sample>=parent->song.sampleLen) {
             chan[c.chan].pcm.sample=-1;
             if (dumpWrites) {
-              addWrite(0x10086+(pcmChan<<3),1);
+              addWrite(0x10086+(pcmChan<<3),3);
             }
             break;
           }
@@ -250,17 +250,18 @@ int DivPlatformArcade::dispatch(DivCommand c) {
           chan[c.chan].furnacePCM=true;
           if (dumpWrites) { // Sega PCM writes
             DivSample* s=parent->song.sample[chan[c.chan].pcm.sample];
-            addWrite(0x10084+(c.chan<<3),(s->rendOffP>>8)&0xff);
-            addWrite(0x10085+(c.chan<<3),(s->rendOffP>>16)&0xff);
-            addWrite(0x10006+(c.chan<<3),(MIN(65536,((s->rendLength+0xff)&(~0xff)))>>8)-1);
-            addWrite(0x10086+(c.chan<<3),0);
+            addWrite(0x10086+(pcmChan<<3),3+((s->rendOffP>>16)<<3));
+            addWrite(0x10084+(pcmChan<<3),(s->rendOffP)&0xff);
+            addWrite(0x10085+(pcmChan<<3),(s->rendOffP>>8)&0xff);
+            addWrite(0x10006+(pcmChan<<3),MIN(255,((s->rendOffP&0xffff)+s->rendLength)>>8));
+            addWrite(0x10086+(pcmChan<<3),2+((s->rendOffP>>16)<<3));
           }
         } else {
           chan[c.chan].pcm.sample=12*sampleBank+c.value%12;
           if (chan[c.chan].pcm.sample>=parent->song.sampleLen) {
             chan[c.chan].pcm.sample=-1;
             if (dumpWrites) {
-              addWrite(0x10086+(pcmChan<<3),1);
+              addWrite(0x10086+(pcmChan<<3),3);
             }
             break;
           }
@@ -269,10 +270,11 @@ int DivPlatformArcade::dispatch(DivCommand c) {
           chan[c.chan].furnacePCM=false;
           if (dumpWrites) { // Sega PCM writes
             DivSample* s=parent->song.sample[chan[c.chan].pcm.sample];
-            addWrite(0x10084+(pcmChan<<3),(s->rendOffP>>8)&0xff);
-            addWrite(0x10085+(pcmChan<<3),(s->rendOffP>>16)&0xff);
-            addWrite(0x10006+(pcmChan<<3),(MIN(65536,((s->rendLength+0xff)&(~0xff)))>>8)-1);
-            addWrite(0x10086+(pcmChan<<3),0);
+            addWrite(0x10086+(pcmChan<<3),3+((s->rendOffP>>16)<<3));
+            addWrite(0x10084+(pcmChan<<3),(s->rendOffP)&0xff);
+            addWrite(0x10085+(pcmChan<<3),(s->rendOffP>>8)&0xff);
+            addWrite(0x10006+(pcmChan<<3),MIN(255,((s->rendOffP&0xffff)+s->rendLength)>>8));
+            addWrite(0x10086+(pcmChan<<3),2+((s->rendOffP>>16)<<3));
             addWrite(0x10007+(pcmChan<<3),chan[c.chan].pcm.freq);
           }
         }
@@ -321,7 +323,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
       if (c.chan>7) {
         chan[c.chan].pcm.sample=-1;
         if (dumpWrites) {
-          addWrite(0x10086+(pcmChan<<3),1);
+          addWrite(0x10086+(pcmChan<<3),3);
         }
       }
       chan[c.chan].keyOff=true;
@@ -559,7 +561,7 @@ void DivPlatformArcade::reset() {
   //rWrite(0x1b,0x00);
   if (dumpWrites) {
     for (int i=0; i<5; i++) {
-      addWrite(0x10086+(i<<3),1);
+      addWrite(0x10086+(i<<3),3);
       addWrite(0x10002+(i<<3),0x7f);
       addWrite(0x10003+(i<<3),0x7f);
     }
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 03237462..57a32c1c 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -1674,9 +1674,6 @@ void FurnaceGUI::drawSampleEdit() {
         if (sample->loopStart&1) {
           ImGui::Text("- sample loop start will be aligned to the nearest even sample on Amiga");
         }
-        if (sample->loopStart&255) {
-          ImGui::Text("- sample loop start will be aligned by 256 on Sega PCM");
-        }
       }
       if (sample->length&1) {
         considerations=true;