From 1352e2fc4fd14367312e7993094e30dd7e3f1bbc Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Mon, 24 Feb 2020 19:54:05 -0800
Subject: [PATCH] GBA SIO: Fix Multiplayer busy bit

---
 CHANGES                         | 1 +
 include/mgba/internal/gba/sio.h | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 625d76311..83a8c25cb 100644
--- a/CHANGES
+++ b/CHANGES
@@ -9,6 +9,7 @@ Emulation fixes:
  - GBA BIOS: Improve HLE BIOS timing
  - GBA DMA: Linger last DMA on bus (fixes mgba.io/i/301 and mgba.io/i/1320)
  - GBA Memory: Improve gamepak prefetch timing
+ - GBA SIO: Fix Multiplayer busy bit
  - GBA Video: Latch scanline at end of Hblank (fixes mgba.io/i/1319)
  - GBA Video: Fix Hblank timing
 Other fixes:
diff --git a/include/mgba/internal/gba/sio.h b/include/mgba/internal/gba/sio.h
index df4cd2f7a..7a4e3ecfb 100644
--- a/include/mgba/internal/gba/sio.h
+++ b/include/mgba/internal/gba/sio.h
@@ -47,7 +47,7 @@ DECL_BIT(GBASIOMultiplayer, Slave, 2);
 DECL_BIT(GBASIOMultiplayer, Ready, 3);
 DECL_BITS(GBASIOMultiplayer, Id, 4, 2);
 DECL_BIT(GBASIOMultiplayer, Error, 6);
-DECL_BIT(GBASIOMultiplayer, Busy, 8);
+DECL_BIT(GBASIOMultiplayer, Busy, 7);
 DECL_BIT(GBASIOMultiplayer, Irq, 14);
 
 struct GBASIODriverSet {