From 446fac32424788fcd209294ff9419f64a50f5656 Mon Sep 17 00:00:00 2001
From: CasualPokePlayer <50538166+CasualPokePlayer@users.noreply.github.com>
Date: Thu, 8 Feb 2024 23:32:14 -0800
Subject: [PATCH] add in c# side code to actually use new saturnus saveram
 interface

---
 .../Consoles/Sega/Saturn/LibSaturnus.cs          | 15 +++++++++++++++
 .../Consoles/Sega/Saturn/Saturnus.cs             | 16 +++++++++++++++-
 2 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 src/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/LibSaturnus.cs

diff --git a/src/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/LibSaturnus.cs b/src/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/LibSaturnus.cs
new file mode 100644
index 0000000000..366a21f422
--- /dev/null
+++ b/src/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/LibSaturnus.cs
@@ -0,0 +1,15 @@
+using BizHawk.BizInvoke;
+using BizHawk.Emulation.Cores.Waterbox;
+
+namespace BizHawk.Emulation.Cores.Consoles.Sega.Saturn
+{
+	public abstract class LibSaturnus : LibNymaCore
+	{
+		[BizImport(CC)]
+		public abstract int GetSaveRamLength();
+		[BizImport(CC)]
+		public abstract void GetSaveRam(byte[] data);
+		[BizImport(CC)]
+		public abstract void PutSaveRam(byte[] data, int length);
+	}
+}
diff --git a/src/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/Saturnus.cs b/src/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/Saturnus.cs
index 88cb73249d..0b6124e695 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/Saturnus.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/Saturnus.cs
@@ -9,6 +9,8 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.Saturn
 	[PortedCore(CoreNames.Saturnus, "Mednafen Team", "1.29.0", "https://mednafen.github.io/releases/")]
 	public class Saturnus : NymaCore, IRegionable
 	{
+		private readonly LibSaturnus _saturnus;
+
 		private Saturnus(CoreComm comm)
 			: base(comm, VSystemID.Raw.NULL, null, null, null)
 		{
@@ -42,7 +44,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.Saturn
 				{ "FIRMWARE:$ULTRA", new("SAT", "ULTRAMAN") },
 				// { "FIRMWARE:$SATAR", new("SAT", "AR") }, // action replay garbage
 			};
-			DoInit<LibNymaCore>(lp, "ss.wbx", firmwares);
+			_saturnus = DoInit<LibSaturnus>(lp, "ss.wbx", firmwares);
 
 			_cachedSettingsInfo ??= SettingsInfo.Clone();
 		}
@@ -99,5 +101,17 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.Saturn
 			}
 			return ret;
 		}
+
+		public new bool SaveRamModified => true;
+
+		public new byte[] CloneSaveRam()
+		{
+			var data = new byte[_saturnus.GetSaveRamLength()];
+			_saturnus.GetSaveRam(data);
+			return data;
+		}
+
+		public new void StoreSaveRam(byte[] data)
+			=> _saturnus.PutSaveRam(data, data.Length);
 	}
 }