diff --git a/BizHawk.Emulation/Consoles/Nintendo/SNES/LibsnesCore.cs b/BizHawk.Emulation/Consoles/Nintendo/SNES/LibsnesCore.cs
index 1e020944f7..a4036e65f5 100644
--- a/BizHawk.Emulation/Consoles/Nintendo/SNES/LibsnesCore.cs
+++ b/BizHawk.Emulation/Consoles/Nintendo/SNES/LibsnesCore.cs
@@ -110,6 +110,11 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
 		[DllImport("libsneshawk.dll", CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr snes_get_memory_data(SNES_MEMORY id);
 
+		[DllImport("libsneshawk.dll", CallingConvention = CallingConvention.Cdecl)]
+		public static extern byte bus_read(uint addr);
+		[DllImport("libsneshawk.dll", CallingConvention = CallingConvention.Cdecl)]
+		public static extern void bus_write(uint addr, byte val);
+
 		[DllImport("libsneshawk.dll", CallingConvention = CallingConvention.Cdecl)]
 		public static extern int snes_serialize_size();
 
@@ -835,6 +840,10 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
 			MakeMemoryDomain("OAM", LibsnesDll.SNES_MEMORY.OAM, Endian.Little);
 			MakeMemoryDomain("CGRAM", LibsnesDll.SNES_MEMORY.CGRAM, Endian.Little);
 			MakeMemoryDomain("APURAM", LibsnesDll.SNES_MEMORY.APURAM, Endian.Little);
+
+			MemoryDomains.Add(new MemoryDomain("BUS", 0x1000000, Endian.Little,
+				(addr) => LibsnesDll.bus_read((uint)addr),
+				(addr, val) => LibsnesDll.bus_write((uint)addr, val)));
 		}
 		public IList<MemoryDomain> MemoryDomains { get; private set; }
 		public MemoryDomain MainMemory { get; private set; }
diff --git a/BizHawk.MultiClient/output/libsneshawk.dll b/BizHawk.MultiClient/output/libsneshawk.dll
index 3b528cf370..4aa906d822 100644
Binary files a/BizHawk.MultiClient/output/libsneshawk.dll and b/BizHawk.MultiClient/output/libsneshawk.dll differ
diff --git a/libsnes/bsnes/target-libsnes/libsnes.cpp b/libsnes/bsnes/target-libsnes/libsnes.cpp
index eb8270f2c9..af1f8dc193 100644
--- a/libsnes/bsnes/target-libsnes/libsnes.cpp
+++ b/libsnes/bsnes/target-libsnes/libsnes.cpp
@@ -529,6 +529,13 @@ unsigned snes_get_memory_size(unsigned id) {
   return size;
 }
 
+uint8_t bus_read(unsigned addr) {
+  return SNES::bus.read(addr);
+}
+void bus_write(unsigned addr, uint8_t val) {
+  SNES::bus.write(addr, val);
+}
+
 int snes_poll_message()
 {
 	if(interface.messages.size() == 0) return -1;
diff --git a/libsnes/bsnes/target-libsnes/libsnes.hpp b/libsnes/bsnes/target-libsnes/libsnes.hpp
index 264d8c9169..39fdf993ed 100644
--- a/libsnes/bsnes/target-libsnes/libsnes.hpp
+++ b/libsnes/bsnes/target-libsnes/libsnes.hpp
@@ -142,6 +142,10 @@ void snes_dequeue_message(char* buffer);
 typedef const char* (*snes_path_request_t)(int slot, const char* hint);
 void snes_set_path_request(snes_path_request_t path_request);
 
+// system bus implementation
+uint8_t bus_read(unsigned addr);
+void bus_write(unsigned addr, uint8_t val);
+
 //$2105
 #define SNES_REG_BG_MODE 0
 #define SNES_REG_BG3_PRIORITY 1