From b53fb9fde7657d978fef925729f8c95df593beae Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Wed, 11 Jun 2025 16:21:37 -0500
Subject: [PATCH] VRC6: fix duty without note

issue #2556
---
 src/engine/platform/vrc6.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/engine/platform/vrc6.cpp b/src/engine/platform/vrc6.cpp
index 9c9167789..a7ae0d3da 100644
--- a/src/engine/platform/vrc6.cpp
+++ b/src/engine/platform/vrc6.cpp
@@ -418,6 +418,9 @@ int DivPlatformVRC6::dispatch(DivCommand c) {
     case DIV_CMD_STD_NOISE_MODE:
       if ((c.chan!=2) && (!chan[c.chan].pcm)) { // pulse
         chan[c.chan].duty=c.value;
+        if (!isMuted[c.chan]) { // pulse
+          chWrite(c.chan,0,(chan[c.chan].outVol&0xf)|((chan[c.chan].duty&7)<<4));
+        }
       }
       break;
     case DIV_CMD_SAMPLE_MODE: