GBHawk: Initialize cartRAM to 0xFF

Fixes Initial D Gaiden

BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBHawk.ISettable.cs

@@ -76,7 +76,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 			}
 
 			[DisplayName("RTC Initial Time")]
-			[Description("Set the initial RTC time in terms of elapsed seconds.  Only used when RealTimeRTC is false.")]
+			[Description("Set the initial RTC time in terms of elapsed seconds.")]
 			[DefaultValue(0)]
 			public int RTCInitialTime
 			{
@@ -84,6 +84,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 				set { _RTCInitialTime = Math.Max(0, Math.Min(1024 * 24 * 60 * 60, value)); }
 			}
 
+			[DisplayName("Use Existing SaveRAM")]
+			[Description("When true, existing SaveRAM will be loaded at boot up")]
+			[DefaultValue(false)]
+			public bool Use_SRAM { get; set; }
+
+
 			[JsonIgnore]
 			private int _RTCInitialTime;
 

BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBHawk.cs

@@ -262,9 +262,27 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 				cart_RAM = new byte[0x200];
 			}
 
+			Console.Write("RAM: ");Console.WriteLine(cart_RAM.Length);
+
 			mapper.Core = this;
 			mapper.Initialize();
 
+			if (cart_RAM != null)
+			{
+				if (_syncSettings.Use_SRAM)
+				{
+					// load cartRAM here
+				}
+				else
+				{
+					for (int i = 0; i < cart_RAM.Length; i++)
+					{
+						cart_RAM[i] = 0xFF;
+					}
+				}
+			}
+			
+
 			// Extra RTC initialization for mbc3
 			if (mppr == "MBC3")
 			{

BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/Mappers/Mapper_MBC1.cs

@@ -67,7 +67,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 				}
 				else
 				{
-					return 0;
+					return 0xFF;
 				}
 			}
 		}