From f376e919ff3e637a30759997ab1fad58cfdd4447 Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Thu, 17 Feb 2022 22:19:01 -0500
Subject: [PATCH] Game Boy: fix sweep in non-sweep channel

---
 src/engine/platform/gb.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/engine/platform/gb.cpp b/src/engine/platform/gb.cpp
index 37905542..3139da0b 100644
--- a/src/engine/platform/gb.cpp
+++ b/src/engine/platform/gb.cpp
@@ -358,6 +358,7 @@ int DivPlatformGB::dispatch(DivCommand c) {
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GB_SWEEP_DIR:
+      if (c.chan>0) break;
       chan[c.chan].sweep&=0xf7;
       if (c.value&1) {
         chan[c.chan].sweep|=8;
@@ -365,6 +366,7 @@ int DivPlatformGB::dispatch(DivCommand c) {
       chan[c.chan].sweepChanged=true;
       break;
     case DIV_CMD_GB_SWEEP_TIME:
+      if (c.chan>0) break;
       chan[c.chan].sweep&=8;
       chan[c.chan].sweep|=c.value&0x77;
       chan[c.chan].sweepChanged=true;