From 5f8548b8dca9a8e8979c1996ed8333e5dc043420 Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Mon, 29 Jun 2015 01:30:59 -0700
Subject: [PATCH] GBA Audio: Fix 8-bit writes to audio channel 3 frequency

---
 CHANGES      | 1 +
 src/gba/io.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index ad9b36312..4ec68f4bf 100644
--- a/CHANGES
+++ b/CHANGES
@@ -51,6 +51,7 @@ Bugfixes:
  - GBA: Fix timing of reading from timer registers
  - Util: Allow loading IPS patches that grow the ROM
  - GBA Audio: Fix sample order in audio channel 3
+ - GBA Audio: Fix 8-bit writes to audio channel 3 frequency
 Misc:
  - Qt: Handle saving input settings better
  - Debugger: Free watchpoints in addition to breakpoints
diff --git a/src/gba/io.c b/src/gba/io.c
index c9957f301..a93227669 100644
--- a/src/gba/io.c
+++ b/src/gba/io.c
@@ -333,7 +333,7 @@ void GBAIOWrite(struct GBA* gba, uint32_t address, uint16_t value) {
 		case REG_SOUND3CNT_X:
 			GBAAudioWriteSOUND3CNT_X(&gba->audio, value);
 			// TODO: The low bits need to not be readable, but still 8-bit writable
-			value &= 0x43FF;
+			value &= 0x47FF;
 			break;
 		case REG_SOUND4CNT_LO:
 			GBAAudioWriteSOUND4CNT_LO(&gba->audio, value);