From 5726ffc7409f34ffd5bc70daeb0c94f418d77da6 Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Fri, 7 Oct 2022 23:37:56 -0500
Subject: [PATCH] Game Boy: fix porta regression

---
 src/engine/platform/gb.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/engine/platform/gb.cpp b/src/engine/platform/gb.cpp
index 8a4cabc4..6a88d0f7 100644
--- a/src/engine/platform/gb.cpp
+++ b/src/engine/platform/gb.cpp
@@ -169,7 +169,9 @@ void DivPlatformGB::tick(bool sysTick) {
         if (chan[i].baseFreq>255) chan[i].baseFreq=255;
         if (chan[i].baseFreq<0) chan[i].baseFreq=0;
       } else {
-        chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val,24));
+        if (!chan[i].inPorta) {
+          chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val,24));
+        }
       }
       chan[i].freqChanged=true;
     }