Fixed Plus 3 Snapshot saving and loading

Core/Memory/MemoryBus.cs

@@ -18,6 +18,8 @@ namespace Core.Memory
         private byte _port7FFD = 0;
         private byte _port1FFD = 0;
         private bool _pagingDisabled = false;
+        public byte Port7FFD => _port7FFD;
+        public int CurrentRamBankSlot3 => _currentRamBankSlot3;
 
         public MemoryBus()
         {
@@ -94,6 +96,11 @@ namespace Core.Memory
                 default: return -1; // -1 means it is pointing to a ROM chip!
             }
         }
+        public byte[] GetRamBank(int index)
+        {
+            return _ramBanks[index];
+        }
+
         public byte Read(ushort address)
         {
             int slot = address >> 14; // Find the 16KB Slot (0, 1, 2, or 3)