diff --git a/Core/MemoryManager.cpp b/Core/MemoryManager.cpp
index 35445f6..4e6a255 100644
--- a/Core/MemoryManager.cpp
+++ b/Core/MemoryManager.cpp
@@ -15,6 +15,7 @@
 void MemoryManager::Initialize(shared_ptr<Console> console)
 {
 	_masterClock = 0;
+	_openBus = 0;
 	_console = console;
 	_regs = console->GetInternalRegisters().get();
 	_ppu = console->GetPpu();
@@ -160,10 +161,10 @@ uint8_t MemoryManager::Read(uint32_t addr, MemoryOperationType type)
 	uint8_t value;
 	if(_handlers[addr >> 12]) {
 		value = _handlers[addr >> 12]->Read(addr);
+		_openBus = value;
 	} else {
 		//open bus
-		value = (addr >> 12);
-
+		value = _openBus;
 		MessageManager::DisplayMessage("Debug", "Read - missing handler: $" + HexUtilities::ToHex(addr));
 	}
 	_console->ProcessCpuRead(addr, value, type);
@@ -176,9 +177,10 @@ uint8_t MemoryManager::ReadDma(uint32_t addr)
 	uint8_t value;
 	if(_handlers[addr >> 12]) {
 		value = _handlers[addr >> 12]->Read(addr);
+		_openBus = value;
 	} else {
 		//open bus
-		value = (addr >> 12);
+		value = _openBus;
 		MessageManager::DisplayMessage("Debug", "Read - missing handler: $" + HexUtilities::ToHex(addr));
 	}
 	_console->ProcessCpuRead(addr, value, MemoryOperationType::DmaRead);
@@ -226,6 +228,11 @@ void MemoryManager::WriteDma(uint32_t addr, uint8_t value)
 	}
 }
 
+uint8_t MemoryManager::GetOpenBus()
+{
+	return _openBus;
+}
+
 uint64_t MemoryManager::GetMasterClock()
 {
 	return _masterClock;
diff --git a/Core/MemoryManager.h b/Core/MemoryManager.h
index 26cadee..835bbf4 100644
--- a/Core/MemoryManager.h
+++ b/Core/MemoryManager.h
@@ -30,6 +30,7 @@ private:
 	vector<unique_ptr<RamHandler>> _workRamHandlers;
 
 	uint8_t *_workRam;
+	uint8_t _openBus;
 
 	uint64_t _masterClock;
 	uint8_t _masterClockTable[2][0x10000];
@@ -56,6 +57,7 @@ public:
 	void Write(uint32_t addr, uint8_t value, MemoryOperationType type);
 	void WriteDma(uint32_t addr, uint8_t value);
 
+	uint8_t GetOpenBus();
 	uint64_t GetMasterClock();
 	uint8_t* DebugGetWorkRam();
 
diff --git a/Core/Ppu.cpp b/Core/Ppu.cpp
index 0cf297b..4a28693 100644
--- a/Core/Ppu.cpp
+++ b/Core/Ppu.cpp
@@ -1255,7 +1255,7 @@ uint8_t Ppu::Read(uint16_t addr)
 			break;
 	}
 
-	return addr >> 8;
+	return _console->GetMemoryManager()->GetOpenBus();
 }
 
 void Ppu::Write(uint32_t addr, uint8_t value)