From ee4a1574478c5ed0101400876db809b97331b00b Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Thu, 25 Apr 2024 23:18:02 -0500
Subject: [PATCH] compatibility

---
 src/engine/engine.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index 3ead7a688..04bcaa938 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -3951,6 +3951,22 @@ bool DivEngine::preInit(bool noSafeMode) {
   
   loadConf();
 
+  if (!conf.has("opn1Core")) {
+    if (conf.has("opnCore")) {
+      conf.set("opn1Core",conf.getString("opnCore",""));
+    }
+  }
+  if (!conf.has("opnaCore")) {
+    if (conf.has("opnCore")) {
+      conf.set("opnaCore",conf.getString("opnCore",""));
+    }
+  }
+  if (!conf.has("opnbCore")) {
+    if (conf.has("opnCore")) {
+      conf.set("opnbCore",conf.getString("opnCore",""));
+    }
+  }
+
 #ifdef HAVE_SDL2
   String audioDriver=getConfString("sdlAudioDriver","");
   if (!audioDriver.empty()) {