From 3ea0ad1e0af868ba71cf1fcc4ab5f712067f177e Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Tue, 28 Jun 2022 23:32:36 -0500
Subject: [PATCH] OPL: fix pitch macro

fixes #535
---
 src/engine/platform/opl.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/engine/platform/opl.cpp b/src/engine/platform/opl.cpp
index da760af7e..fa1009b05 100644
--- a/src/engine/platform/opl.cpp
+++ b/src/engine/platform/opl.cpp
@@ -601,8 +601,9 @@ void DivPlatformOPL::tick(bool sysTick) {
     if (chan[i].freqChanged) {
       chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,octave(chan[i].baseFreq)*2,chan[i].pitch2,chipClock,CHIP_FREQBASE);
       if (chan[i].fixedFreq>0) chan[i].freq=chan[i].fixedFreq;
+      if (chan[i].freq<0) chan[i].freq=0;
       if (chan[i].freq>131071) chan[i].freq=131071;
-      int freqt=toFreq(chan[i].freq)+chan[i].pitch2;
+      int freqt=toFreq(chan[i].freq);
       chan[i].freqH=freqt>>8;
       chan[i].freqL=freqt&0xff;
       immWrite(chanMap[i]+ADDR_FREQ,chan[i].freqL);