From 8cac04d917c544e6f88475a7576e23fc68bf9433 Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Wed, 13 Sep 2023 18:03:22 -0500
Subject: [PATCH] OPL: fix drum muting

---
 src/engine/platform/opl.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/engine/platform/opl.cpp b/src/engine/platform/opl.cpp
index 44e9b3b14..5a7580a78 100644
--- a/src/engine/platform/opl.cpp
+++ b/src/engine/platform/opl.cpp
@@ -722,6 +722,10 @@ void DivPlatformOPL::muteChannel(int ch, bool mute) {
     }
   }
 
+  if (properDrums && ch>melodicChans) {
+    return;
+  }
+
   if (isMuted[ch]) {
     rWrite(chanMap[ch]+ADDR_LR_FB_ALG,(chan[ch].state.alg&1)|(chan[ch].state.fb<<1));
     if (ops==4) {