From c6857b56f27c968947bd6a2e66d68edf735b9fd5 Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Wed, 9 Aug 2023 23:22:08 -0500
Subject: [PATCH] OPLL: now add a partial fix to issue #289

does not fulfill "apply pitch to all channels" suggestion yet though
---
 src/engine/platform/opll.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/engine/platform/opll.cpp b/src/engine/platform/opll.cpp
index a4185004..de436739 100644
--- a/src/engine/platform/opll.cpp
+++ b/src/engine/platform/opll.cpp
@@ -886,11 +886,17 @@ void DivPlatformOPLL::forceIns() {
     immWrite(0x18,0xC0);
     immWrite(0x28,0x01);
   }
-  // restore drum volumes
+  // restore drum volumes and state
   if (properDrums) {
     rWrite(0x36,DRUM_VOL(0));
     rWrite(0x37,DRUM_VOL(1)|(DRUM_VOL(4)<<4));
     rWrite(0x38,DRUM_VOL(3)|(DRUM_VOL(2)<<4));
+
+    chan[6].freqChanged=true;
+    chan[7].freqChanged=true;
+    chan[8].freqChanged=true;
+    chan[9].freqChanged=true;
+    chan[10].freqChanged=true;
   }
   drumState=0;
 }