diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE.cpp
index 0042db0d75..178850b42f 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE.cpp
@@ -349,7 +349,7 @@ void DoState(PointerWrap &p)
 
 void ExecuteCommand(u32 _Address)
 {
-	bool CmdSuccess = false;
+	IPCCommandResult result = IPC_NO_REPLY;
 
 	IPCCommandType Command = static_cast<IPCCommandType>(Memory::Read_U32(_Address));
 	volatile s32 DeviceID = Memory::Read_U32(_Address + 8);
@@ -379,7 +379,7 @@ void ExecuteCommand(u32 _Address)
 					{
 						es_inuse[j] = true;
 						g_FdMap[DeviceID] = es_handles[j];
-						CmdSuccess = es_handles[j]->Open(_Address, Mode);
+						result = es_handles[j]->Open(_Address, Mode);
 						Memory::Write_U32(DeviceID, _Address+4);
 						break;
 					}
@@ -388,7 +388,7 @@ void ExecuteCommand(u32 _Address)
 				if (j == ES_MAX_COUNT)
 				{
 					Memory::Write_U32(FS_EESEXHAUSTED, _Address + 4);
-					CmdSuccess = true;
+					result = IPC_DEFAULT_REPLY;
 				}
 			}
 			else if (DeviceName.find("/dev/") == 0)
@@ -397,7 +397,7 @@ void ExecuteCommand(u32 _Address)
 				if (pDevice)
 				{
 					g_FdMap[DeviceID] = pDevice;
-					CmdSuccess = pDevice->Open(_Address, Mode);
+					result = pDevice->Open(_Address, Mode);
 					INFO_LOG(WII_IPC_FILEIO, "IOP: ReOpen (Device=%s, DeviceID=%08x, Mode=%i)",
 						pDevice->GetDeviceName().c_str(), DeviceID, Mode);
 					Memory::Write_U32(DeviceID, _Address+4);
@@ -406,13 +406,13 @@ void ExecuteCommand(u32 _Address)
 				{
 					WARN_LOG(WII_IPC_HLE, "Unimplemented device: %s", DeviceName.c_str());
 					Memory::Write_U32(FS_ENOENT, _Address+4);
-					CmdSuccess = true;
+					result = IPC_DEFAULT_REPLY;
 				}
 			}
 			else
 			{
 				pDevice = CreateFileIO(DeviceID, DeviceName);
-				CmdSuccess = pDevice->Open(_Address, Mode);
+				result = pDevice->Open(_Address, Mode);
 
 				INFO_LOG(WII_IPC_FILEIO, "IOP: Open File (Device=%s, ID=%08x, Mode=%i)",
 						pDevice->GetDeviceName().c_str(), DeviceID, Mode);
@@ -430,7 +430,7 @@ void ExecuteCommand(u32 _Address)
 		else
 		{
 			Memory::Write_U32(FS_EFDEXHAUSTED, _Address + 4);
-			CmdSuccess = true;
+			result = IPC_DEFAULT_REPLY;
 		}
 		break;
 	}
@@ -438,7 +438,7 @@ void ExecuteCommand(u32 _Address)
 	{
 		if (pDevice)
 		{
-			CmdSuccess = pDevice->Close(_Address);
+			result = pDevice->Close(_Address);
 
 			for (u32 j=0; j<ES_MAX_COUNT; j++)
 			{
@@ -460,7 +460,7 @@ void ExecuteCommand(u32 _Address)
 		else
 		{
 			Memory::Write_U32(FS_EINVAL, _Address + 4);
-			CmdSuccess = true;
+			result = IPC_DEFAULT_REPLY;
 		}
 		break;
 	}
@@ -468,12 +468,12 @@ void ExecuteCommand(u32 _Address)
 	{
 		if (pDevice)
 		{
-			CmdSuccess = pDevice->Read(_Address);
+			result = pDevice->Read(_Address);
 		}
 		else
 		{
 			Memory::Write_U32(FS_EINVAL, _Address + 4);
-			CmdSuccess = true;
+			result = IPC_DEFAULT_REPLY;
 		}
 		break;
 	}
@@ -481,12 +481,12 @@ void ExecuteCommand(u32 _Address)
 	{
 		if (pDevice)
 		{
-			CmdSuccess = pDevice->Write(_Address);
+			result = pDevice->Write(_Address);
 		}
 		else
 		{
 			Memory::Write_U32(FS_EINVAL, _Address + 4);
-			CmdSuccess = true;
+			result = IPC_DEFAULT_REPLY;
 		}
 		break;
 	}
@@ -494,12 +494,12 @@ void ExecuteCommand(u32 _Address)
 	{
 		if (pDevice)
 		{
-			CmdSuccess = pDevice->Seek(_Address);
+			result = pDevice->Seek(_Address);
 		}
 		else
 		{
 			Memory::Write_U32(FS_EINVAL, _Address + 4);
-			CmdSuccess = true;
+			result = IPC_DEFAULT_REPLY;
 		}
 		break;
 	}
@@ -507,7 +507,7 @@ void ExecuteCommand(u32 _Address)
 	{
 		if (pDevice)
 		{
-			CmdSuccess = pDevice->IOCtl(_Address);
+			result = pDevice->IOCtl(_Address);
 		}
 		break;
 	}
@@ -515,7 +515,7 @@ void ExecuteCommand(u32 _Address)
 	{
 		if (pDevice)
 		{
-			CmdSuccess = pDevice->IOCtlV(_Address);
+			result = pDevice->IOCtlV(_Address);
 		}
 		break;
 	}
@@ -526,34 +526,20 @@ void ExecuteCommand(u32 _Address)
 	}
 	}
 
+	// Ensure replies happen in order
+	const s64 ticks_until_last_reply = last_reply_time - CoreTiming::GetTicks();
+	if (ticks_until_last_reply > 0)
+		result.reply_delay_ticks = ticks_until_last_reply;
+	last_reply_time = CoreTiming::GetTicks() + result.reply_delay_ticks;
 
-	if (CmdSuccess)
+	if (result.send_reply)
 	{
 		// The original hardware overwrites the command type with the async reply type.
 		Memory::Write_U32(IPC_REP_ASYNC, _Address);
 		// IOS also seems to write back the command that was responded to in the FD field.
 		Memory::Write_U32(Command, _Address + 8);
-
-		// Ensure replies happen in order, fairly ugly
-		// Without this, tons of games fail now that DI commands have different reply delays
-		int reply_delay = pDevice ? pDevice->GetCmdDelay(_Address) : 0;
-		if (!reply_delay)
-		{
-			int delay_us = 250;
-			reply_delay = SystemTimers::GetTicksPerSecond() / 1000000 * delay_us;
-		}
-
-		const s64 ticks_til_last_reply = last_reply_time - CoreTiming::GetTicks();
-
-		if (ticks_til_last_reply > 0)
-		{
-			reply_delay = (int)ticks_til_last_reply;
-		}
-
-		last_reply_time = CoreTiming::GetTicks() + reply_delay;
-
 		// Generate a reply to the IPC command
-		EnqueueReply(_Address, reply_delay);
+		EnqueueReply(_Address, (int)result.reply_delay_ticks);
 	}
 }
 
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE.h
index 59fd1a077f..1175462dc3 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE.h
@@ -8,9 +8,17 @@
 
 #include "Common/CommonTypes.h"
 
+#include "Core/HW/SystemTimers.h"
+
 class IWII_IPC_HLE_Device;
 class PointerWrap;
 
+struct IPCCommandResult
+{
+	bool send_reply;
+	u64 reply_delay_ticks;
+};
+
 enum IPCCommandType : u32
 {
 	IPC_CMD_OPEN   = 1,
@@ -26,6 +34,10 @@ enum IPCCommandType : u32
 	IPC_REP_ASYNC  = 8
 };
 
+static const u32 IPC_DEFAULT_DELAY = SystemTimers::GetTicksPerSecond() / 4000;	// 250 us
+static const IPCCommandResult IPC_NO_REPLY = { false, 0 };
+static const IPCCommandResult IPC_DEFAULT_REPLY = { true, IPC_DEFAULT_DELAY };
+
 namespace WII_IPC_HLE_Interface
 {
 
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device.h
index 86b268853d..73eb5605c6 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device.h
@@ -11,6 +11,7 @@
 #include "Common/StringUtil.h"
 
 #include "Core/HW/Memmap.h"
+#include "Core/IPC_HLE/WII_IPC_HLE.h"
 
 #define FS_SUCCESS      (u32)0      // Success
 #define FS_EACCES       (u32)-1     // Permission denied
@@ -119,39 +120,37 @@ public:
 	const std::string& GetDeviceName() const { return m_Name; }
 	u32 GetDeviceID() const { return m_DeviceID; }
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode)
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode)
 	{
 		(void)_Mode;
 		WARN_LOG(WII_IPC_HLE, "%s does not support Open()", m_Name.c_str());
 		Memory::Write_U32(FS_ENOENT, _CommandAddress + 4);
 		m_Active = true;
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
-	virtual bool Close(u32 _CommandAddress, bool _bForce = false)
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce = false)
 	{
 		WARN_LOG(WII_IPC_HLE, "%s does not support Close()", m_Name.c_str());
 		if (!_bForce)
 			Memory::Write_U32(FS_EINVAL, _CommandAddress + 4);
 		m_Active = false;
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
-#define UNIMPLEMENTED_CMD(cmd) WARN_LOG(WII_IPC_HLE, "%s does not support "#cmd"()", m_Name.c_str()); return true;
-	virtual bool Seek   (u32) { UNIMPLEMENTED_CMD(Seek) }
-	virtual bool Read   (u32) { UNIMPLEMENTED_CMD(Read) }
-	virtual bool Write  (u32) { UNIMPLEMENTED_CMD(Write) }
-	virtual bool IOCtl  (u32) { UNIMPLEMENTED_CMD(IOCtl) }
-	virtual bool IOCtlV (u32) { UNIMPLEMENTED_CMD(IOCtlV) }
+#define UNIMPLEMENTED_CMD(cmd) WARN_LOG(WII_IPC_HLE, "%s does not support "#cmd"()", m_Name.c_str()); return IPC_DEFAULT_REPLY;
+	virtual IPCCommandResult Seek(u32)   { UNIMPLEMENTED_CMD(Seek) }
+	virtual IPCCommandResult Read(u32)   { UNIMPLEMENTED_CMD(Read) }
+	virtual IPCCommandResult Write(u32)  { UNIMPLEMENTED_CMD(Write) }
+	virtual IPCCommandResult IOCtl(u32)  { UNIMPLEMENTED_CMD(IOCtl) }
+	virtual IPCCommandResult IOCtlV(u32) { UNIMPLEMENTED_CMD(IOCtlV) }
 #undef UNIMPLEMENTED_CMD
 
-	virtual int GetCmdDelay(u32) { return 0; }
-
 	virtual u32 Update() { return 0; }
 
 	virtual bool IsHardware() { return m_Hardware; }
 	virtual bool IsOpened() { return m_Active; }
-public:
+
 	std::string m_Name;
 protected:
 
@@ -223,33 +222,33 @@ public:
 	{
 	}
 
-	bool Open(u32 CommandAddress, u32 Mode) override
+	IPCCommandResult Open(u32 CommandAddress, u32 Mode) override
 	{
 		(void)Mode;
 		WARN_LOG(WII_IPC_HLE, "%s faking Open()", m_Name.c_str());
 		Memory::Write_U32(GetDeviceID(), CommandAddress + 4);
 		m_Active = true;
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
-	bool Close(u32 CommandAddress, bool bForce = false) override
+	IPCCommandResult Close(u32 CommandAddress, bool bForce = false) override
 	{
 		WARN_LOG(WII_IPC_HLE, "%s faking Close()", m_Name.c_str());
 		if (!bForce)
 			Memory::Write_U32(FS_SUCCESS, CommandAddress + 4);
 		m_Active = false;
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
-	bool IOCtl(u32 CommandAddress) override
+	IPCCommandResult IOCtl(u32 CommandAddress) override
 	{
 		WARN_LOG(WII_IPC_HLE, "%s faking IOCtl()", m_Name.c_str());
 		Memory::Write_U32(FS_SUCCESS, CommandAddress + 4);
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
-	bool IOCtlV(u32 CommandAddress) override
+	IPCCommandResult IOCtlV(u32 CommandAddress) override
 	{
 		WARN_LOG(WII_IPC_HLE, "%s faking IOCtlV()", m_Name.c_str());
 		Memory::Write_U32(FS_SUCCESS, CommandAddress + 4);
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 };
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_DI.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_DI.cpp
index 5ff80b44c5..55e61ede78 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_DI.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_DI.cpp
@@ -25,22 +25,22 @@ CWII_IPC_HLE_Device_di::CWII_IPC_HLE_Device_di(u32 _DeviceID, const std::string&
 CWII_IPC_HLE_Device_di::~CWII_IPC_HLE_Device_di()
 {}
 
-bool CWII_IPC_HLE_Device_di::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_di::Open(u32 _CommandAddress, u32 _Mode)
 {
 	Memory::Write_U32(GetDeviceID(), _CommandAddress + 4);
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_di::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_di::Close(u32 _CommandAddress, bool _bForce)
 {
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_di::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_di::IOCtl(u32 _CommandAddress)
 {
 	u32 BufferIn = Memory::Read_U32(_CommandAddress + 0x10);
 	u32 BufferInSize = Memory::Read_U32(_CommandAddress + 0x14);
@@ -66,10 +66,10 @@ bool CWII_IPC_HLE_Device_di::IOCtl(u32 _CommandAddress)
 	                                         BufferOut, BufferOutSize, false);
 	Memory::Write_U32(result.interrupt_type, _CommandAddress + 0x4);
 	// TODO: Don't discard result.ticks_until_completion
-	return true;
+	return { true, GetCmdDelay(_CommandAddress) };
 }
 
-bool CWII_IPC_HLE_Device_di::IOCtlV(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_di::IOCtlV(u32 _CommandAddress)
 {
 	SIOCtlVBuffer CommandBuffer(_CommandAddress);
 
@@ -111,10 +111,10 @@ bool CWII_IPC_HLE_Device_di::IOCtlV(u32 _CommandAddress)
 	}
 
 	Memory::Write_U32(ReturnValue, _CommandAddress + 4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-int CWII_IPC_HLE_Device_di::GetCmdDelay(u32 _CommandAddress)
+u64 CWII_IPC_HLE_Device_di::GetCmdDelay(u32 _CommandAddress)
 {
 	u32 BufferIn = Memory::Read_U32(_CommandAddress + 0x10);
 	u32 Command  = Memory::Read_U32(BufferIn) >> 24;
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_DI.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_DI.h
index 6f28ae498d..5975e0f621 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_DI.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_DI.h
@@ -20,11 +20,13 @@ public:
 
 	virtual ~CWII_IPC_HLE_Device_di();
 
-	bool Open(u32 _CommandAddress, u32 _Mode) override;
-	bool Close(u32 _CommandAddress, bool _bForce) override;
+	IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
 
-	bool IOCtl(u32 _CommandAddress) override;
-	bool IOCtlV(u32 _CommandAddress) override;
+	IPCCommandResult IOCtl(u32 _CommandAddress) override;
+	IPCCommandResult IOCtlV(u32 _CommandAddress) override;
 
-	int GetCmdDelay(u32) override;
+private:
+
+	u64 CWII_IPC_HLE_Device_di::GetCmdDelay(u32 _CommandAddress);
 };
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_FileIO.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_FileIO.cpp
index 423a1a1c38..f9d3486c27 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_FileIO.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_FileIO.cpp
@@ -78,7 +78,7 @@ CWII_IPC_HLE_Device_FileIO::~CWII_IPC_HLE_Device_FileIO()
 {
 }
 
-bool CWII_IPC_HLE_Device_FileIO::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_FileIO::Close(u32 _CommandAddress, bool _bForce)
 {
 	INFO_LOG(WII_IPC_FILEIO, "FileIO: Close %s (DeviceID=%08x)", m_Name.c_str(), m_DeviceID);
 	m_Mode = 0;
@@ -87,10 +87,10 @@ bool CWII_IPC_HLE_Device_FileIO::Close(u32 _CommandAddress, bool _bForce)
 	if (_CommandAddress && !_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_FileIO::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_FileIO::Open(u32 _CommandAddress, u32 _Mode)
 {
 	m_Mode = _Mode;
 	u32 ReturnValue = 0;
@@ -121,7 +121,7 @@ bool CWII_IPC_HLE_Device_FileIO::Open(u32 _CommandAddress, u32 _Mode)
 	if (_CommandAddress)
 		Memory::Write_U32(ReturnValue, _CommandAddress+4);
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 File::IOFile CWII_IPC_HLE_Device_FileIO::OpenFile()
@@ -147,7 +147,7 @@ File::IOFile CWII_IPC_HLE_Device_FileIO::OpenFile()
 	return File::IOFile(m_filepath, open_mode);
 }
 
-bool CWII_IPC_HLE_Device_FileIO::Seek(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_FileIO::Seek(u32 _CommandAddress)
 {
 	u32 ReturnValue = FS_RESULT_FATAL;
 	const s32 SeekPosition = Memory::Read_U32(_CommandAddress + 0xC);
@@ -208,10 +208,10 @@ bool CWII_IPC_HLE_Device_FileIO::Seek(u32 _CommandAddress)
 	}
 	Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);
 
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_FileIO::Read(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_FileIO::Read(u32 _CommandAddress)
 {
 	u32 ReturnValue = FS_EACCESS;
 	const u32 Address = Memory::Read_U32(_CommandAddress + 0xC); // Read to this memory address
@@ -247,10 +247,10 @@ bool CWII_IPC_HLE_Device_FileIO::Read(u32 _CommandAddress)
 	}
 
 	Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_FileIO::Write(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_FileIO::Write(u32 _CommandAddress)
 {
 	u32 ReturnValue = FS_EACCESS;
 	const u32 Address = Memory::Read_U32(_CommandAddress + 0xC); // Write data from this memory address
@@ -280,10 +280,10 @@ bool CWII_IPC_HLE_Device_FileIO::Write(u32 _CommandAddress)
 	}
 
 	Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_FileIO::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_FileIO::IOCtl(u32 _CommandAddress)
 {
 	INFO_LOG(WII_IPC_FILEIO, "FileIO: IOCtl (Device=%s)", m_Name.c_str());
 #if defined(_DEBUG) || defined(DEBUGFAST)
@@ -323,7 +323,7 @@ bool CWII_IPC_HLE_Device_FileIO::IOCtl(u32 _CommandAddress)
 
 	Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);
 
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 void CWII_IPC_HLE_Device_FileIO::DoState(PointerWrap &p)
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_FileIO.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_FileIO.h
index f7a90fc027..a60fcb2351 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_FileIO.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_FileIO.h
@@ -17,12 +17,12 @@ public:
 
 	virtual ~CWII_IPC_HLE_Device_FileIO();
 
-	bool Close(u32 _CommandAddress, bool _bForce) override;
-	bool Open(u32 _CommandAddress, u32 _Mode) override;
-	bool Seek(u32 _CommandAddress) override;
-	bool Read(u32 _CommandAddress) override;
-	bool Write(u32 _CommandAddress) override;
-	bool IOCtl(u32 _CommandAddress) override;
+	IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
+	IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	IPCCommandResult Seek(u32 _CommandAddress) override;
+	IPCCommandResult Read(u32 _CommandAddress) override;
+	IPCCommandResult Write(u32 _CommandAddress) override;
+	IPCCommandResult IOCtl(u32 _CommandAddress) override;
 	void DoState(PointerWrap &p) override;
 
 	File::IOFile OpenFile();
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_es.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_es.cpp
index 7ce15fa178..af4efbbdc2 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_es.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_es.cpp
@@ -172,7 +172,7 @@ void CWII_IPC_HLE_Device_es::DoState(PointerWrap& p)
 	}
 }
 
-bool CWII_IPC_HLE_Device_es::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_es::Open(u32 _CommandAddress, u32 _Mode)
 {
 	OpenInternal();
 
@@ -180,10 +180,10 @@ bool CWII_IPC_HLE_Device_es::Open(u32 _CommandAddress, u32 _Mode)
 	if (m_Active)
 		INFO_LOG(WII_IPC_ES, "Device was re-opened.");
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_es::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_es::Close(u32 _CommandAddress, bool _bForce)
 {
 	// Leave deletion of the INANDContentLoader objects to CNANDContentManager, don't do it here!
 	m_NANDContent.clear();
@@ -201,7 +201,7 @@ bool CWII_IPC_HLE_Device_es::Close(u32 _CommandAddress, bool _bForce)
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 u32 CWII_IPC_HLE_Device_es::OpenTitleContent(u32 CFD, u64 TitleID, u16 Index)
@@ -244,7 +244,7 @@ u32 CWII_IPC_HLE_Device_es::OpenTitleContent(u32 CFD, u64 TitleID, u16 Index)
 	return CFD;
 }
 
-bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 {
 	SIOCtlVBuffer Buffer(_CommandAddress);
 
@@ -281,7 +281,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_GETDEVICEID %08X", ec.getNgId());
 			Memory::Write_U32(ec.getNgId(), Buffer.PayloadBuffer[0].m_Address);
 			Memory::Write_U32(0, _CommandAddress + 0x4);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -311,7 +311,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_GETTITLECONTENTSCNT: TitleID: %08x/%08x  content count %i",
 				(u32)(TitleID>>32), (u32)TitleID, rNANDContent.IsValid() ? NumberOfPrivateContent : (u32)rNANDContent.GetContentSize());
 
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -342,7 +342,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 						GetContentSize());
 			}
 
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -360,7 +360,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_OPENTITLECONTENT: TitleID: %08x/%08x  Index %i -> got CFD %x", (u32)(TitleID>>32), (u32)TitleID, Index, CFD);
 
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -374,7 +374,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			Memory::Write_U32(CFD, _CommandAddress + 0x4);
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_OPENCONTENT: Index %i -> got CFD %x", Index, CFD);
 
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -391,7 +391,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			if (itr == m_ContentAccessMap.end())
 			{
 				Memory::Write_U32(-1, _CommandAddress + 0x4);
-				return true;
+				return IPC_DEFAULT_REPLY;
 			}
 			SContentAccess& rContent = itr->second;
 
@@ -433,7 +433,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_READCONTENT: CFD %x, Address 0x%x, Size %i -> stream pos %i (Index %i)", CFD, Addr, Size, rContent.m_Position, rContent.m_pContent->m_Index);
 
 			Memory::Write_U32(Size, _CommandAddress + 0x4);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -450,14 +450,14 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			if (itr == m_ContentAccessMap.end())
 			{
 				Memory::Write_U32(-1, _CommandAddress + 0x4);
-				return true;
+				return IPC_DEFAULT_REPLY;
 			}
 
 			delete itr->second.m_pFile;
 			m_ContentAccessMap.erase(itr);
 
 			Memory::Write_U32(0, _CommandAddress + 0x4);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -474,7 +474,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			if (itr == m_ContentAccessMap.end())
 			{
 				Memory::Write_U32(-1, _CommandAddress + 0x4);
-				return true;
+				return IPC_DEFAULT_REPLY;
 			}
 			SContentAccess& rContent = itr->second;
 
@@ -496,7 +496,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_SEEKCONTENT: CFD %x, Address 0x%x, Mode %i -> Pos %i", CFD, Addr, Mode, rContent.m_Position);
 
 			Memory::Write_U32(rContent.m_Position, _CommandAddress + 0x4);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -547,7 +547,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 
 			Memory::Write_U32(0, _CommandAddress + 0x4);
 
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -570,7 +570,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_GETTITLES: Number of titles returned %i", Count);
 			Memory::Write_U32(0, _CommandAddress + 0x4);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -617,7 +617,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 
 			Memory::Write_U32(ViewCount, Buffer.PayloadBuffer[0].m_Address);
 			Memory::Write_U32(retVal, _CommandAddress + 0x4);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -681,7 +681,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_GETVIEWS for titleID: %08x/%08x (MaxViews = %i)", (u32)(TitleID >> 32), (u32)TitleID, maxViews);
 
 			Memory::Write_U32(retVal, _CommandAddress + 0x4);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -707,7 +707,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			Memory::Write_U32(0, _CommandAddress + 0x4);
 
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_GETTMDVIEWCNT: title: %08x/%08x (view size %i)", (u32)(TitleID >> 32), (u32)TitleID, TMDViewCnt);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -747,7 +747,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			Memory::Write_U32(0, _CommandAddress + 0x4);
 
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_GETTMDVIEWS: title: %08x/%08x (buffer size: %i)", (u32)(TitleID >> 32), (u32)TitleID, MaxCount);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -755,7 +755,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 		Memory::Write_U32(0, Buffer.PayloadBuffer[1].m_Address);
 		Memory::Write_U32(0, _CommandAddress + 0x4);
 		WARN_LOG(WII_IPC_ES, "IOCTL_ES_GETCONSUMPTION:%d", Memory::Read_U32(_CommandAddress+4));
-		return true;
+		return IPC_DEFAULT_REPLY;
 
 	case IOCTL_ES_DELETETICKET:
 		{
@@ -809,7 +809,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			Memory::Write_U32(0, _CommandAddress + 0x4);
 
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_GETSTOREDTMDSIZE: title: %08x/%08x (view size %i)", (u32)(TitleID >> 32), (u32)TitleID, TMDCnt);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 	case IOCTL_ES_GETSTOREDTMD:
@@ -850,7 +850,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			Memory::Write_U32(0, _CommandAddress + 0x4);
 
 			INFO_LOG(WII_IPC_ES, "IOCTL_ES_GETSTOREDTMD: title: %08x/%08x (buffer size: %i)", (u32)(TitleID >> 32), (u32)TitleID, MaxCount);
-			return true;
+			return IPC_DEFAULT_REPLY;
 		}
 		break;
 
@@ -997,7 +997,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 			// Generate a "reply" to the IPC command.  ES_LAUNCH is unique because it
 			// involves restarting IOS; IOS generates two acknowledgements in a row.
 			WII_IPC_HLE_Interface::EnqueueCommandAcknowledgement(_CommandAddress, 0);
-			return false;
+			return IPC_NO_REPLY;
 		}
 		break;
 
@@ -1006,7 +1006,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 		//if the IOS didn't find the Korean keys and 0 if it does. 0 leads to a error 003
 		WARN_LOG(WII_IPC_ES,"IOCTL_ES_CHECKKOREAREGION: Title checked for Korean keys.");
 		Memory::Write_U32(ES_PARAMTER_SIZE_OR_ALIGNMENT , _CommandAddress + 0x4);
-		return true;
+		return IPC_DEFAULT_REPLY;
 
 	case IOCTL_ES_GETDEVICECERT: // (Input: none, Output: 384 bytes)
 		{
@@ -1062,7 +1062,7 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
 	// Write return value (0 means OK)
 	Memory::Write_U32(0, _CommandAddress + 0x4);
 
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 const DiscIO::INANDContentLoader& CWII_IPC_HLE_Device_es::AccessContentDevice(u64 _TitleID)
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_es.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_es.h
index efa4f73bbf..fb3f3d18a5 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_es.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_es.h
@@ -24,11 +24,11 @@ public:
 
 	virtual void DoState(PointerWrap& p) override;
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
 
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override;
+	virtual IPCCommandResult IOCtlV(u32 _CommandAddress) override;
 
-	virtual bool IOCtlV(u32 _CommandAddress) override;
 	static u32 ES_DIVerify(u8 *_pTMD, u32 _sz);
 
 	// This should only be cleared on power reset
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_fs.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_fs.cpp
index edf458f551..260bac9f43 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_fs.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_fs.cpp
@@ -17,6 +17,10 @@
 
 static Common::replace_v replacements;
 
+// ~1/1000th of a second is too short and causes hangs in Wii Party
+// Play it safe at 1/500th
+static const IPCCommandResult IPC_FS_REPLY = { true, SystemTimers::GetTicksPerSecond() / 500 };
+
 CWII_IPC_HLE_Device_fs::CWII_IPC_HLE_Device_fs(u32 _DeviceID, const std::string& _rDeviceName)
 	: IWII_IPC_HLE_Device(_DeviceID, _rDeviceName)
 {
@@ -26,7 +30,7 @@ CWII_IPC_HLE_Device_fs::CWII_IPC_HLE_Device_fs(u32 _DeviceID, const std::string&
 CWII_IPC_HLE_Device_fs::~CWII_IPC_HLE_Device_fs()
 {}
 
-bool CWII_IPC_HLE_Device_fs::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_fs::Open(u32 _CommandAddress, u32 _Mode)
 {
 	// clear tmp folder
 	{
@@ -37,16 +41,16 @@ bool CWII_IPC_HLE_Device_fs::Open(u32 _CommandAddress, u32 _Mode)
 
 	Memory::Write_U32(GetDeviceID(), _CommandAddress+4);
 	m_Active = true;
-	return true;
+	return IPC_FS_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_fs::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_fs::Close(u32 _CommandAddress, bool _bForce)
 {
 	INFO_LOG(WII_IPC_FILEIO, "Close");
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_FS_REPLY;
 }
 
 // Get total filesize of contents of a directory (recursive)
@@ -64,7 +68,7 @@ static u64 ComputeTotalFileSize(const File::FSTEntry& parentEntry)
 	return sizeOfFiles;
 }
 
-bool CWII_IPC_HLE_Device_fs::IOCtlV(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_fs::IOCtlV(u32 _CommandAddress)
 {
 	u32 ReturnValue = FS_RESULT_OK;
 	SIOCtlVBuffer CommandBuffer(_CommandAddress);
@@ -223,10 +227,10 @@ bool CWII_IPC_HLE_Device_fs::IOCtlV(u32 _CommandAddress)
 
 	Memory::Write_U32(ReturnValue, _CommandAddress+4);
 
-	return true;
+	return IPC_FS_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_fs::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_fs::IOCtl(u32 _CommandAddress)
 {
 	//u32 DeviceID = Memory::Read_U32(_CommandAddress + 8);
 	//LOG(WII_IPC_FILEIO, "FS: IOCtl (Device=%s, DeviceID=%08x)", GetDeviceName().c_str(), DeviceID);
@@ -245,7 +249,7 @@ bool CWII_IPC_HLE_Device_fs::IOCtl(u32 _CommandAddress)
 	u32 ReturnValue = ExecuteCommand(Parameter, BufferIn, BufferInSize, BufferOut, BufferOutSize);
 	Memory::Write_U32(ReturnValue, _CommandAddress + 4);
 
-	return true;
+	return IPC_FS_REPLY;
 }
 
 s32 CWII_IPC_HLE_Device_fs::ExecuteCommand(u32 _Parameter, u32 _BufferIn, u32 _BufferInSize, u32 _BufferOut, u32 _BufferOutSize)
@@ -485,13 +489,6 @@ s32 CWII_IPC_HLE_Device_fs::ExecuteCommand(u32 _Parameter, u32 _BufferIn, u32 _B
 	return FS_RESULT_FATAL;
 }
 
-int CWII_IPC_HLE_Device_fs::GetCmdDelay(u32)
-{
-	// ~1/1000th of a second is too short and causes hangs in Wii Party
-	// Play it safe at 1/500th
-	return SystemTimers::GetTicksPerSecond() / 500;
-}
-
 void CWII_IPC_HLE_Device_fs::DoState(PointerWrap& p)
 {
 	DoStateShared(p);
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_fs.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_fs.h
index 41ddfb13d1..fafc972e27 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_fs.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_fs.h
@@ -38,13 +38,11 @@ public:
 
 	virtual void DoState(PointerWrap& p) override;
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override;
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override;
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
 
-	virtual bool IOCtl(u32 _CommandAddress) override;
-	virtual bool IOCtlV(u32 _CommandAddress) override;
-
-	virtual int GetCmdDelay(u32) override;
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override;
+	virtual IPCCommandResult IOCtlV(u32 _CommandAddress) override;
 
 private:
 
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_hid.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_hid.cpp
index 495a252721..c152d86c0b 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_hid.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_hid.cpp
@@ -109,24 +109,24 @@ CWII_IPC_HLE_Device_hid::~CWII_IPC_HLE_Device_hid()
 		libusb_exit(nullptr);
 }
 
-bool CWII_IPC_HLE_Device_hid::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_hid::Open(u32 _CommandAddress, u32 _Mode)
 {
 	DEBUG_LOG(WII_IPC_HID, "HID::Open");
 	m_Active = true;
 	Memory::Write_U32(GetDeviceID(), _CommandAddress + 4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_hid::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_hid::Close(u32 _CommandAddress, bool _bForce)
 {
 	DEBUG_LOG(WII_IPC_HID, "HID::Close");
 	m_Active = false;
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_hid::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_hid::IOCtl(u32 _CommandAddress)
 {
 	u32 Parameter     = Memory::Read_U32(_CommandAddress + 0xC);
 	u32 BufferIn      = Memory::Read_U32(_CommandAddress + 0x10);
@@ -142,7 +142,7 @@ bool CWII_IPC_HLE_Device_hid::IOCtl(u32 _CommandAddress)
 		DEBUG_LOG(WII_IPC_HID, "HID::IOCtl(Get Attached) (BufferIn: (%08x, %i), BufferOut: (%08x, %i)",
 			BufferIn, BufferInSize, BufferOut, BufferOutSize);
 		deviceCommandAddress = _CommandAddress;
-		return false;
+		return IPC_NO_REPLY;
 	}
 	case IOCTL_HID_OPEN:
 	{
@@ -205,7 +205,7 @@ bool CWII_IPC_HLE_Device_hid::IOCtl(u32 _CommandAddress)
 		//          bmRequestType, bRequest, BufferIn, BufferInSize, BufferOut, BufferOutSize);
 
 		// It's the async way!
-		return false;
+		return IPC_NO_REPLY;
 	}
 	case IOCTL_HID_INTERRUPT_OUT:
 	case IOCTL_HID_INTERRUPT_IN:
@@ -236,7 +236,7 @@ bool CWII_IPC_HLE_Device_hid::IOCtl(u32 _CommandAddress)
 		//          Parameter == IOCTL_HID_INTERRUPT_IN ? "In" : "Out", endpoint, length, data, BufferIn, BufferInSize, BufferOut, BufferOutSize);
 
 		// It's the async way!
-		return false;
+		return IPC_NO_REPLY;
 	}
 	case IOCTL_HID_SHUTDOWN:
 	{
@@ -269,7 +269,7 @@ bool CWII_IPC_HLE_Device_hid::IOCtl(u32 _CommandAddress)
 
 	Memory::Write_U32(ReturnValue, _CommandAddress + 4);
 
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 
@@ -299,7 +299,7 @@ bool CWII_IPC_HLE_Device_hid::ClaimDevice(libusb_device_handle * dev)
 	return true;
 }
 
-bool CWII_IPC_HLE_Device_hid::IOCtlV(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_hid::IOCtlV(u32 _CommandAddress)
 {
 
 	Dolphin_Debugger::PrintCallstack(LogTypes::WII_IPC_HID, LogTypes::LWARNING);
@@ -318,7 +318,7 @@ bool CWII_IPC_HLE_Device_hid::IOCtlV(u32 _CommandAddress)
 	#endif
 
 	Memory::Write_U32(ReturnValue, _CommandAddress + 4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_hid.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_hid.h
index e5dd5d14cf..48c25a07c2 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_hid.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_hid.h
@@ -36,11 +36,11 @@ public:
 
 	virtual ~CWII_IPC_HLE_Device_hid();
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override;
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override;
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
 
-	virtual bool IOCtlV(u32 _CommandAddress) override;
-	virtual bool IOCtl(u32 _CommandAddress) override;
+	virtual IPCCommandResult IOCtlV(u32 _CommandAddress) override;
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override;
 
 private:
 	enum
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net.cpp
index 93a1837c04..d07a696a5e 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net.cpp
@@ -60,24 +60,24 @@ CWII_IPC_HLE_Device_net_kd_request::~CWII_IPC_HLE_Device_net_kd_request()
 	WiiSockMan::GetInstance().Clean();
 }
 
-bool CWII_IPC_HLE_Device_net_kd_request::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_net_kd_request::Open(u32 _CommandAddress, u32 _Mode)
 {
 	INFO_LOG(WII_IPC_WC24, "NET_KD_REQ: Open");
 	Memory::Write_U32(GetDeviceID(), _CommandAddress + 4);
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_net_kd_request::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_net_kd_request::Close(u32 _CommandAddress, bool _bForce)
 {
 	INFO_LOG(WII_IPC_WC24, "NET_KD_REQ: Close");
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_net_kd_request::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_net_kd_request::IOCtl(u32 _CommandAddress)
 {
 	u32 Parameter     = Memory::Read_U32(_CommandAddress + 0xC);
 	u32 BufferIn      = Memory::Read_U32(_CommandAddress + 0x10);
@@ -205,7 +205,7 @@ bool CWII_IPC_HLE_Device_net_kd_request::IOCtl(u32 _CommandAddress)
 	}
 
 	Memory::Write_U32(ReturnValue, _CommandAddress + 4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 
@@ -340,24 +340,24 @@ CWII_IPC_HLE_Device_net_ncd_manage::~CWII_IPC_HLE_Device_net_ncd_manage()
 {
 }
 
-bool CWII_IPC_HLE_Device_net_ncd_manage::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_net_ncd_manage::Open(u32 _CommandAddress, u32 _Mode)
 {
 	INFO_LOG(WII_IPC_NET, "NET_NCD_MANAGE: Open");
 	Memory::Write_U32(GetDeviceID(), _CommandAddress+4);
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_net_ncd_manage::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_net_ncd_manage::Close(u32 _CommandAddress, bool _bForce)
 {
 	INFO_LOG(WII_IPC_NET, "NET_NCD_MANAGE: Close");
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_net_ncd_manage::IOCtlV(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_net_ncd_manage::IOCtlV(u32 _CommandAddress)
 {
 	u32 return_value = 0;
 	u32 common_result = 0;
@@ -423,7 +423,7 @@ bool CWII_IPC_HLE_Device_net_ncd_manage::IOCtlV(u32 _CommandAddress)
 		Memory::Write_U32(common_result, CommandBuffer.PayloadBuffer.at(common_vector).m_Address + 4);
 	}
 	Memory::Write_U32(return_value, _CommandAddress + 4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 // **********************************************************************************
@@ -437,27 +437,27 @@ CWII_IPC_HLE_Device_net_wd_command::~CWII_IPC_HLE_Device_net_wd_command()
 {
 }
 
-bool CWII_IPC_HLE_Device_net_wd_command::Open(u32 CommandAddress, u32 Mode)
+IPCCommandResult CWII_IPC_HLE_Device_net_wd_command::Open(u32 CommandAddress, u32 Mode)
 {
 	INFO_LOG(WII_IPC_NET, "NET_WD_COMMAND: Open");
 	Memory::Write_U32(GetDeviceID(), CommandAddress + 4);
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_net_wd_command::Close(u32 CommandAddress, bool Force)
+IPCCommandResult CWII_IPC_HLE_Device_net_wd_command::Close(u32 CommandAddress, bool Force)
 {
 	INFO_LOG(WII_IPC_NET, "NET_WD_COMMAND: Close");
 	if (!Force)
 		Memory::Write_U32(0, CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 // This is just for debugging / playing around.
 // There really is no reason to implement wd unless we can bend it such that
 // we can talk to the DS.
-bool CWII_IPC_HLE_Device_net_wd_command::IOCtlV(u32 CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_net_wd_command::IOCtlV(u32 CommandAddress)
 {
 	u32 return_value = 0;
 
@@ -544,7 +544,7 @@ bool CWII_IPC_HLE_Device_net_wd_command::IOCtlV(u32 CommandAddress)
 	}
 
 	Memory::Write_U32(return_value, CommandAddress + 4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 // **********************************************************************************
@@ -565,21 +565,21 @@ CWII_IPC_HLE_Device_net_ip_top::~CWII_IPC_HLE_Device_net_ip_top()
 #endif
 }
 
-bool CWII_IPC_HLE_Device_net_ip_top::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_net_ip_top::Open(u32 _CommandAddress, u32 _Mode)
 {
 	INFO_LOG(WII_IPC_NET, "NET_IP_TOP: Open");
 	Memory::Write_U32(GetDeviceID(), _CommandAddress+4);
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_net_ip_top::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_net_ip_top::Close(u32 _CommandAddress, bool _bForce)
 {
 	INFO_LOG(WII_IPC_NET, "NET_IP_TOP: Close");
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 static int inet_pton(const char* src, unsigned char* dst)
@@ -638,7 +638,7 @@ static unsigned int opt_name_mapping[][2] = {
 	{ SO_ERROR, 0x1009 }
 };
 
-bool CWII_IPC_HLE_Device_net_ip_top::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_net_ip_top::IOCtl(u32 _CommandAddress)
 {
 	u32 Command       = Memory::Read_U32(_CommandAddress + 0x0C);
 	u32 BufferIn      = Memory::Read_U32(_CommandAddress + 0x10);
@@ -697,7 +697,7 @@ bool CWII_IPC_HLE_Device_net_ip_top::IOCtl(u32 _CommandAddress)
 		u32 fd = Memory::Read_U32(BufferIn);
 		WiiSockMan &sm = WiiSockMan::GetInstance();
 		sm.DoSock(fd, _CommandAddress, (NET_IOCTL)Command);
-		return false;
+		return IPC_NO_REPLY;
 	}
 	/////////////////////////////////////////////////////////////
 	//                  TODO: Tidy all below                   //
@@ -1134,11 +1134,11 @@ bool CWII_IPC_HLE_Device_net_ip_top::IOCtl(u32 _CommandAddress)
 
 	Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);
 
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 
-bool CWII_IPC_HLE_Device_net_ip_top::IOCtlV(u32 CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_net_ip_top::IOCtlV(u32 CommandAddress)
 {
 	SIOCtlVBuffer CommandBuffer(CommandAddress);
 
@@ -1307,7 +1307,7 @@ bool CWII_IPC_HLE_Device_net_ip_top::IOCtlV(u32 CommandAddress)
 		u32 fd = Memory::Read_U32(_BufferIn2);
 		WiiSockMan &sm = WiiSockMan::GetInstance();
 		sm.DoSock(fd, CommandAddress, IOCTLV_SO_SENDTO);
-		return false;
+		return IPC_NO_REPLY;
 		break;
 	}
 	case IOCTLV_SO_RECVFROM:
@@ -1315,7 +1315,7 @@ bool CWII_IPC_HLE_Device_net_ip_top::IOCtlV(u32 CommandAddress)
 		u32 fd = Memory::Read_U32(_BufferIn);
 		WiiSockMan &sm = WiiSockMan::GetInstance();
 		sm.DoSock(fd, CommandAddress, IOCTLV_SO_RECVFROM);
-		return false;
+		return IPC_NO_REPLY;
 		break;
 	}
 	case IOCTLV_SO_GETADDRINFO:
@@ -1491,7 +1491,7 @@ bool CWII_IPC_HLE_Device_net_ip_top::IOCtlV(u32 CommandAddress)
 	}
 
 	Memory::Write_U32(ReturnValue, CommandAddress + 4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 u32 CWII_IPC_HLE_Device_net_ip_top::Update()
 {
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net.h
index d99bcf474c..fd6b7e07f1 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net.h
@@ -391,9 +391,9 @@ public:
 
 	virtual ~CWII_IPC_HLE_Device_net_kd_request();
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override;
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override;
-	virtual bool IOCtl(u32 _CommandAddress) override;
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override;
 
 private:
 	enum
@@ -454,22 +454,22 @@ public:
 	virtual ~CWII_IPC_HLE_Device_net_kd_time()
 	{}
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override
 	{
 		INFO_LOG(WII_IPC_NET, "NET_KD_TIME: Open");
 		Memory::Write_U32(GetDeviceID(), _CommandAddress+4);
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override
 	{
 		INFO_LOG(WII_IPC_NET, "NET_KD_TIME: Close");
 		if (!_bForce)
 			Memory::Write_U32(0, _CommandAddress + 4);
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
-	virtual bool IOCtl(u32 _CommandAddress) override
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override
 	{
 		u32 Parameter = Memory::Read_U32(_CommandAddress + 0x0C);
 		u32 BufferIn  = Memory::Read_U32(_CommandAddress + 0x10);
@@ -512,7 +512,7 @@ public:
 		// write return values
 		Memory::Write_U32(common_result, BufferOut);
 		Memory::Write_U32(result, _CommandAddress + 4);
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
 private:
@@ -593,10 +593,10 @@ public:
 
 	virtual ~CWII_IPC_HLE_Device_net_ip_top();
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override;
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override;
-	virtual bool IOCtl(u32 _CommandAddress) override;
-	virtual bool IOCtlV(u32 _CommandAddress) override;
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override;
+	virtual IPCCommandResult IOCtlV(u32 _CommandAddress) override;
 
 	virtual u32 Update() override;
 
@@ -617,9 +617,9 @@ public:
 
 	virtual ~CWII_IPC_HLE_Device_net_ncd_manage();
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override;
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override;
-	virtual bool IOCtlV(u32 _CommandAddress) override;
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
+	virtual IPCCommandResult IOCtlV(u32 _CommandAddress) override;
 
 private:
 	enum
@@ -645,9 +645,9 @@ public:
 
 	virtual ~CWII_IPC_HLE_Device_net_wd_command();
 
-	virtual bool Open(u32 CommandAddress, u32 Mode) override;
-	virtual bool Close(u32 CommandAddress, bool Force) override;
-	virtual bool IOCtlV(u32 CommandAddress) override;
+	virtual IPCCommandResult Open(u32 CommandAddress, u32 Mode) override;
+	virtual IPCCommandResult Close(u32 CommandAddress, bool Force) override;
+	virtual IPCCommandResult IOCtlV(u32 CommandAddress) override;
 
 private:
 	enum
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net_ssl.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net_ssl.cpp
index 8641beba60..81c3d40d74 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net_ssl.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net_ssl.cpp
@@ -52,24 +52,24 @@ int CWII_IPC_HLE_Device_net_ssl::getSSLFreeID()
 	return 0;
 }
 
-bool CWII_IPC_HLE_Device_net_ssl::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_net_ssl::Open(u32 _CommandAddress, u32 _Mode)
 {
 	Memory::Write_U32(GetDeviceID(), _CommandAddress+4);
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_net_ssl::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_net_ssl::Close(u32 _CommandAddress, bool _bForce)
 {
 	if (!_bForce)
 	{
 		Memory::Write_U32(0, _CommandAddress + 4);
 	}
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_net_ssl::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_net_ssl::IOCtl(u32 _CommandAddress)
 {
 	u32 BufferIn      = Memory::Read_U32(_CommandAddress + 0x10);
 	u32 BufferInSize  = Memory::Read_U32(_CommandAddress + 0x14);
@@ -82,10 +82,10 @@ bool CWII_IPC_HLE_Device_net_ssl::IOCtl(u32 _CommandAddress)
 	         GetDeviceName().c_str(), Command,
 	         BufferIn, BufferInSize, BufferOut, BufferOutSize);
 	Memory::Write_U32(0, _CommandAddress + 0x4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_net_ssl::IOCtlV(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_net_ssl::IOCtlV(u32 _CommandAddress)
 {
 	SIOCtlVBuffer CommandBuffer(_CommandAddress);
 
@@ -393,7 +393,7 @@ _SSL_NEW_ERROR:
 		{
 			WiiSockMan &sm = WiiSockMan::GetInstance();
 			sm.DoSock(_SSL[sslID].sockfd, _CommandAddress, IOCTLV_NET_SSL_DOHANDSHAKE);
-			return false;
+			return IPC_NO_REPLY;
 		}
 		else
 		{
@@ -408,7 +408,7 @@ _SSL_NEW_ERROR:
 		{
 			WiiSockMan &sm = WiiSockMan::GetInstance();
 			sm.DoSock(_SSL[sslID].sockfd, _CommandAddress, IOCTLV_NET_SSL_WRITE);
-			return false;
+			return IPC_NO_REPLY;
 		}
 		else
 		{
@@ -433,7 +433,7 @@ _SSL_NEW_ERROR:
 		{
 			WiiSockMan &sm = WiiSockMan::GetInstance();
 			sm.DoSock(_SSL[sslID].sockfd, _CommandAddress, IOCTLV_NET_SSL_READ);
-			return false;
+			return IPC_NO_REPLY;
 		}
 		else
 		{
@@ -506,6 +506,6 @@ _SSL_NEW_ERROR:
 	// SSL return codes are written to BufferIn
 	Memory::Write_U32(0, _CommandAddress+4);
 
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net_ssl.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net_ssl.h
index a6f89cebcd..3cf12810b9 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net_ssl.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_net_ssl.h
@@ -75,12 +75,12 @@ public:
 
 	virtual ~CWII_IPC_HLE_Device_net_ssl();
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
 
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override;
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override;
+	virtual IPCCommandResult IOCtlV(u32 _CommandAddress) override;
 
-	virtual bool IOCtl(u32 _CommandAddress) override;
-	virtual bool IOCtlV(u32 _CommandAddress) override;
 	int getSSLFreeID();
 
 	static WII_SSL _SSL[NET_SSL_MAXINSTANCES];
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.cpp
index c9433f15c6..a75c6c1a51 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.cpp
@@ -76,7 +76,7 @@ void CWII_IPC_HLE_Device_sdio_slot0::OpenInternal()
 	}
 }
 
-bool CWII_IPC_HLE_Device_sdio_slot0::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_sdio_slot0::Open(u32 _CommandAddress, u32 _Mode)
 {
 	INFO_LOG(WII_IPC_SD, "Open");
 
@@ -85,10 +85,10 @@ bool CWII_IPC_HLE_Device_sdio_slot0::Open(u32 _CommandAddress, u32 _Mode)
 	Memory::Write_U32(GetDeviceID(), _CommandAddress + 0x4);
 	memset(m_Registers, 0, sizeof(m_Registers));
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_sdio_slot0::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_sdio_slot0::Close(u32 _CommandAddress, bool _bForce)
 {
 	INFO_LOG(WII_IPC_SD, "Close");
 
@@ -99,11 +99,11 @@ bool CWII_IPC_HLE_Device_sdio_slot0::Close(u32 _CommandAddress, bool _bForce)
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 0x4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 // The front SD slot
-bool CWII_IPC_HLE_Device_sdio_slot0::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_sdio_slot0::IOCtl(u32 _CommandAddress)
 {
 	u32 Cmd = Memory::Read_U32(_CommandAddress + 0xC);
 
@@ -226,7 +226,7 @@ bool CWII_IPC_HLE_Device_sdio_slot0::IOCtl(u32 _CommandAddress)
 		Memory::Write_U32(0, _CommandAddress + 0x4);
 		// Check if the condition is already true
 		EventNotify();
-		return false;
+		return IPC_NO_REPLY;
 	}
 	else if (ReturnValue == RET_EVENT_UNREGISTER)
 	{
@@ -237,16 +237,16 @@ bool CWII_IPC_HLE_Device_sdio_slot0::IOCtl(u32 _CommandAddress)
 		m_event.addr = 0;
 		m_event.type = EVENT_NONE;
 		Memory::Write_U32(0, _CommandAddress + 0x4);
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 	else
 	{
 		Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 }
 
-bool CWII_IPC_HLE_Device_sdio_slot0::IOCtlV(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_sdio_slot0::IOCtlV(u32 _CommandAddress)
 {
 	// PPC sending commands
 
@@ -280,7 +280,7 @@ bool CWII_IPC_HLE_Device_sdio_slot0::IOCtlV(u32 _CommandAddress)
 
 	Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);
 
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 u32 CWII_IPC_HLE_Device_sdio_slot0::ExecuteCommand(u32 _BufferIn, u32 _BufferInSize,
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.h
index 20104b2239..0101edd755 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.h
@@ -16,10 +16,11 @@ public:
 
 	virtual void DoState(PointerWrap& p) override;
 
-	bool Open(u32 _CommandAddress, u32 _Mode) override;
-	bool Close(u32 _CommandAddress, bool _bForce) override;
-	bool IOCtl(u32 _CommandAddress) override;
-	bool IOCtlV(u32 _CommandAddress) override;
+	IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
+
+	IPCCommandResult IOCtl(u32 _CommandAddress) override;
+	IPCCommandResult IOCtlV(u32 _CommandAddress) override;
 
 	static void EnqueueReply(u32 CommandAddress, u32 ReturnValue);
 	void EventNotify();
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_stm.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_stm.h
index 68412e3b0e..66a980bc3f 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_stm.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_stm.h
@@ -36,24 +36,24 @@ public:
 	virtual ~CWII_IPC_HLE_Device_stm_immediate()
 	{}
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override
 	{
 		INFO_LOG(WII_IPC_STM, "STM immediate: Open");
 		Memory::Write_U32(GetDeviceID(), _CommandAddress+4);
 		m_Active = true;
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override
 	{
 		INFO_LOG(WII_IPC_STM, "STM immediate: Close");
 		if (!_bForce)
 			Memory::Write_U32(0, _CommandAddress+4);
 		m_Active = false;
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
-	virtual bool IOCtl(u32 _CommandAddress) override
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override
 	{
 		u32 Parameter     = Memory::Read_U32(_CommandAddress + 0x0C);
 		u32 BufferIn      = Memory::Read_U32(_CommandAddress + 0x10);
@@ -107,7 +107,7 @@ public:
 
 		// Write return value to the IPC call
 		Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 };
 
@@ -125,14 +125,14 @@ public:
 	{
 	}
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override
 	{
 		Memory::Write_U32(GetDeviceID(), _CommandAddress + 4);
 		m_Active = true;
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override
 	{
 		m_EventHookAddress = 0;
 
@@ -140,10 +140,10 @@ public:
 		if (!_bForce)
 			Memory::Write_U32(0, _CommandAddress+4);
 		m_Active = false;
-		return true;
+		return IPC_DEFAULT_REPLY;
 	}
 
-	virtual bool IOCtl(u32 _CommandAddress) override
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override
 	{
 		u32 Parameter     = Memory::Read_U32(_CommandAddress + 0x0C);
 		u32 BufferIn      = Memory::Read_U32(_CommandAddress + 0x10);
@@ -182,7 +182,7 @@ public:
 
 		// Write return value to the IPC call, 0 means success
 		Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);
-		return false;
+		return IPC_DEFAULT_REPLY;
 	}
 
 	// STATE_TO_SAVE
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb.cpp
index 442197c087..b769dc3626 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb.cpp
@@ -129,7 +129,7 @@ bool CWII_IPC_HLE_Device_usb_oh1_57e_305::RemoteDisconnect(u16 _connectionHandle
 	return SendEventDisconnect(_connectionHandle, 0x13);
 }
 
-bool CWII_IPC_HLE_Device_usb_oh1_57e_305::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_usb_oh1_57e_305::Open(u32 _CommandAddress, u32 _Mode)
 {
 	m_ScanEnable = 0;
 
@@ -141,10 +141,10 @@ bool CWII_IPC_HLE_Device_usb_oh1_57e_305::Open(u32 _CommandAddress, u32 _Mode)
 
 	Memory::Write_U32(GetDeviceID(), _CommandAddress + 4);
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_usb_oh1_57e_305::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_usb_oh1_57e_305::Close(u32 _CommandAddress, bool _bForce)
 {
 	m_ScanEnable = 0;
 
@@ -157,16 +157,16 @@ bool CWII_IPC_HLE_Device_usb_oh1_57e_305::Close(u32 _CommandAddress, bool _bForc
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_usb_oh1_57e_305::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_usb_oh1_57e_305::IOCtl(u32 _CommandAddress)
 {
 	//ERROR_LOG(WII_IPC_WIIMOTE, "Passing ioctl to ioctlv");
 	return IOCtlV(_CommandAddress); // FIXME: Hack
 }
 
-bool CWII_IPC_HLE_Device_usb_oh1_57e_305::IOCtlV(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_usb_oh1_57e_305::IOCtlV(u32 _CommandAddress)
 {
 /*
 	Memory::Write_U8(255, 0x80149950);  // BTM LOG  // 3 logs L2Cap  // 4 logs l2_csm$
@@ -304,7 +304,7 @@ bool CWII_IPC_HLE_Device_usb_oh1_57e_305::IOCtlV(u32 _CommandAddress)
 
 	// write return value
 	Memory::Write_U32(0, _CommandAddress + 4);
-	return _SendReply;
+	return { _SendReply, IPC_DEFAULT_DELAY };
 }
 
 
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb.h
index fcdfb54f5a..9c351e617e 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb.h
@@ -50,11 +50,11 @@ public:
 
 	virtual ~CWII_IPC_HLE_Device_usb_oh1_57e_305();
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override;
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override;
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
 
-	virtual bool IOCtlV(u32 _CommandAddress) override;
-	virtual bool IOCtl(u32 _CommandAddress) override;
+	virtual IPCCommandResult IOCtlV(u32 _CommandAddress) override;
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override;
 
 	virtual u32 Update() override;
 
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb_kbd.cpp b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb_kbd.cpp
index 938c7b4302..eea29842e2 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb_kbd.cpp
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb_kbd.cpp
@@ -20,7 +20,7 @@ CWII_IPC_HLE_Device_usb_kbd::CWII_IPC_HLE_Device_usb_kbd(u32 _DeviceID, const st
 CWII_IPC_HLE_Device_usb_kbd::~CWII_IPC_HLE_Device_usb_kbd()
 {}
 
-bool CWII_IPC_HLE_Device_usb_kbd::Open(u32 _CommandAddress, u32 _Mode)
+IPCCommandResult CWII_IPC_HLE_Device_usb_kbd::Open(u32 _CommandAddress, u32 _Mode)
 {
 	INFO_LOG(WII_IPC_STM, "CWII_IPC_HLE_Device_usb_kbd: Open");
 	IniFile ini;
@@ -37,10 +37,10 @@ bool CWII_IPC_HLE_Device_usb_kbd::Open(u32 _CommandAddress, u32 _Mode)
 	//m_MessageQueue.push(SMessageData(MSG_KBD_CONNECT, 0, nullptr));
 	Memory::Write_U32(m_DeviceID, _CommandAddress+4);
 	m_Active = true;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_usb_kbd::Close(u32 _CommandAddress, bool _bForce)
+IPCCommandResult CWII_IPC_HLE_Device_usb_kbd::Close(u32 _CommandAddress, bool _bForce)
 {
 	INFO_LOG(WII_IPC_STM, "CWII_IPC_HLE_Device_usb_kbd: Close");
 	while (!m_MessageQueue.empty())
@@ -48,19 +48,19 @@ bool CWII_IPC_HLE_Device_usb_kbd::Close(u32 _CommandAddress, bool _bForce)
 	if (!_bForce)
 		Memory::Write_U32(0, _CommandAddress + 4);
 	m_Active = false;
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_usb_kbd::Write(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_usb_kbd::Write(u32 _CommandAddress)
 {
 	INFO_LOG(WII_IPC_STM, "Ignoring write to CWII_IPC_HLE_Device_usb_kbd");
 #if defined(_DEBUG) || defined(DEBUGFAST)
 	DumpCommands(_CommandAddress, 10, LogTypes::WII_IPC_STM, LogTypes::LDEBUG);
 #endif
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
-bool CWII_IPC_HLE_Device_usb_kbd::IOCtl(u32 _CommandAddress)
+IPCCommandResult CWII_IPC_HLE_Device_usb_kbd::IOCtl(u32 _CommandAddress)
 {
 	u32 BufferOut = Memory::Read_U32(_CommandAddress + 0x18);
 
@@ -71,7 +71,7 @@ bool CWII_IPC_HLE_Device_usb_kbd::IOCtl(u32 _CommandAddress)
 	}
 
 	Memory::Write_U32(0, _CommandAddress + 0x4);
-	return true;
+	return IPC_DEFAULT_REPLY;
 }
 
 bool CWII_IPC_HLE_Device_usb_kbd::IsKeyPressed(int _Key)
diff --git a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb_kbd.h b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb_kbd.h
index 6a38856e95..21ed6becf3 100644
--- a/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb_kbd.h
+++ b/Source/Core/Core/IPC_HLE/WII_IPC_HLE_Device_usb_kbd.h
@@ -12,10 +12,10 @@ public:
 	CWII_IPC_HLE_Device_usb_kbd(u32 _DeviceID, const std::string& _rDeviceName);
 	virtual ~CWII_IPC_HLE_Device_usb_kbd();
 
-	virtual bool Open(u32 _CommandAddress, u32 _Mode) override;
-	virtual bool Close(u32 _CommandAddress, bool _bForce) override;
-	virtual bool Write(u32 _CommandAddress) override;
-	virtual bool IOCtl(u32 _CommandAddress) override;
+	virtual IPCCommandResult Open(u32 _CommandAddress, u32 _Mode) override;
+	virtual IPCCommandResult Close(u32 _CommandAddress, bool _bForce) override;
+	virtual IPCCommandResult Write(u32 _CommandAddress) override;
+	virtual IPCCommandResult IOCtl(u32 _CommandAddress) override;
 	virtual u32 Update() override;
 
 private: