From c4497b7c76d393cdd30e9c77528c3de3758db9ff Mon Sep 17 00:00:00 2001
From: alyosha-tas <alexei.f.k@gmail.com>
Date: Tue, 13 Mar 2018 13:00:56 -0400
Subject: [PATCH] C64: Fix 4 in 1 (pot's should return 0xFF instead of 0 when
 not connected.)

---
 .../Computers/Commodore64/C64.MotherboardInterface.cs     | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/C64.MotherboardInterface.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/C64.MotherboardInterface.cs
index 71b0e0a029..37b606fb74 100644
--- a/BizHawk.Emulation.Cores/Computers/Commodore64/C64.MotherboardInterface.cs
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/C64.MotherboardInterface.cs
@@ -1,4 +1,6 @@
-namespace BizHawk.Emulation.Cores.Computers.Commodore64
+using System;
+
+namespace BizHawk.Emulation.Cores.Computers.Commodore64
 {
 	public sealed partial class Motherboard
 	{
@@ -155,12 +157,12 @@
 
 		private int Sid_ReadPotX()
 		{
-			return 0;
+			return 255;
 		}
 
 		private int Sid_ReadPotY()
 		{
-			return 0;
+			return 255;
 		}
 
 		private int Vic_ReadMemory(int addr)