From 0da42f18a6d503d1ec8d2b3b3cf499dfb0f94ffe Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Fri, 5 Sep 2025 13:26:52 -0500
Subject: [PATCH] T6W28: fix noise reset on all duty macro steps

issue #2665
---
 src/engine/platform/t6w28.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/engine/platform/t6w28.cpp b/src/engine/platform/t6w28.cpp
index c54ab9c9d..6ea2accc4 100644
--- a/src/engine/platform/t6w28.cpp
+++ b/src/engine/platform/t6w28.cpp
@@ -129,7 +129,7 @@ void DivPlatformT6W28::tick(bool sysTick) {
       chan[i].freqChanged=true;
     }
     if (i==3 && chan[i].std.duty.had) {
-      if (chan[i].duty!=chan[i].std.duty.val) {
+      if (chan[i].duty!=(((chan[i].std.duty.val==1)?4:0)|3)) {
         chan[i].duty=((chan[i].std.duty.val==1)?4:0)|3;
         rWrite(1,0xe0+chan[i].duty);
       }