From 722cf9dec140754ffd591c6a7235a5615ab05d8e Mon Sep 17 00:00:00 2001
From: adelikat <adelikat@expion.com>
Date: Mon, 10 Aug 2015 19:43:27 -0400
Subject: [PATCH] Mapper 245 - don't throw an exception on a particular bad
 dump shenanigans

---
 .../Nintendo/NES/Boards/MMC3_family/Mapper245.cs         | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper245.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper245.cs
index c93e626cbc..7fee600b6b 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper245.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper245.cs
@@ -74,7 +74,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				}
 				else
 				{
-					return VRAM[addr];
+					if (VRAM != null) // Bad dumps such as Chu Han Zheng Ba - The War Between Chu & Han (Ch) [b1] can get us into this situation without VRAM
+					{
+						return VRAM[addr];
+					}
+					else
+					{
+						return 0xFF;
+					}
 				}
 			}
 			else