From 1a7f8b0ff8c6f8d5b9ecbc45a9acadbc52494e4c Mon Sep 17 00:00:00 2001
From: alyosha-tas <alexei.f.k@gmail.com>
Date: Thu, 25 May 2017 12:53:11 -0400
Subject: [PATCH] Fix #857

---
 .../Consoles/Nintendo/NES/NESControllers.cs            | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NESControllers.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NESControllers.cs
index 765eadc234..48adc81990 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NESControllers.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NESControllers.cs
@@ -933,12 +933,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				return 0;
 			int idx = row * 8 + column * 4;
 
-			byte ret = 0;
+			byte ret = 0x1E;
 
-			if (c.IsPressed(Buttons[idx])) ret |= 16;
-			if (c.IsPressed(Buttons[idx + 1])) ret |= 8;
-			if (c.IsPressed(Buttons[idx + 2])) ret |= 4;
-			if (c.IsPressed(Buttons[idx + 3])) ret |= 2;
+			if (c.IsPressed(Buttons[idx])) ret &= 0x0E;
+			if (c.IsPressed(Buttons[idx + 1])) ret &= 0x16;
+			if (c.IsPressed(Buttons[idx + 2])) ret &= 0x1A;
+			if (c.IsPressed(Buttons[idx + 3])) ret &= 0x1C;
 
 			// nothing is clocked here
 			return ret;