From ccf2c61a23509e0bd7197a19f45ac56757a7e2de Mon Sep 17 00:00:00 2001
From: CasualPokePlayer <50538166+CasualPokePlayer@users.noreply.github.com>
Date: Sat, 20 May 2023 03:11:40 -0700
Subject: [PATCH] fix #3664

---
 .../Consoles/Nintendo/NES/Boards/Mapper069.cs                 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper069.cs b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper069.cs
index ad45e98e6d..63201010ef 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper069.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper069.cs
@@ -270,7 +270,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				addr = CalcWRAMAddress(addr, prg_bank_mask_8k);
 				return Rom[addr];
 			}
-			else if (!wram_ram_enabled)
+			else if (!wram_ram_enabled || Wram is null)
 				return 0xFF; //empty bus
 			else
 			{
@@ -282,7 +282,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		public override void WriteWram(int addr, byte value)
 		{
 			if (!wram_ram_selected) return;
-			else if (!wram_ram_enabled)
+			else if (!wram_ram_enabled || Wram is null)
 				return; //empty bus
 			else
 			{