diff --git a/desmume/src/addons/slot1_none.cpp b/desmume/src/addons/slot1_none.cpp
index 6b16f4728..69cf8bcaf 100644
--- a/desmume/src/addons/slot1_none.cpp
+++ b/desmume/src/addons/slot1_none.cpp
@@ -25,7 +25,7 @@ class Slot1_None : public ISlot1Interface
 public:
 	virtual Slot1Info const* info()
 	{
-		static Slot1InfoSimple info("None","Slot1 no-card emulation");
+		static Slot1InfoSimple info("None","Slot1 no-card emulation", 0xFF);
 		return &info;
 	}
 
diff --git a/desmume/src/addons/slot1_r4.cpp b/desmume/src/addons/slot1_r4.cpp
index 000335395..e63fd7f99 100644
--- a/desmume/src/addons/slot1_r4.cpp
+++ b/desmume/src/addons/slot1_r4.cpp
@@ -42,7 +42,7 @@ public:
 
 	virtual Slot1Info const* info()
 	{
-		static Slot1InfoSimple info("R4","Slot1 R4 emulation");
+		static Slot1InfoSimple info("R4", "Slot1 R4 emulation", 0x03);
 		return &info;
 	}
 
diff --git a/desmume/src/addons/slot1_retail_auto.cpp b/desmume/src/addons/slot1_retail_auto.cpp
index 7a150889e..434fe3c56 100644
--- a/desmume/src/addons/slot1_retail_auto.cpp
+++ b/desmume/src/addons/slot1_retail_auto.cpp
@@ -33,7 +33,7 @@ public:
 
 	virtual Slot1Info const* info()
 	{
-		static Slot1InfoSimple info("Retail (Auto)","Slot1 Retail (auto-selection) card emulation");
+		static Slot1InfoSimple info("Retail (Auto)","Slot1 Retail (auto-selection) card emulation", 0xFE);
 		return &info;
 	}
 
diff --git a/desmume/src/addons/slot1_retail_mcrom.cpp b/desmume/src/addons/slot1_retail_mcrom.cpp
index 7f6744d53..025bd2972 100644
--- a/desmume/src/addons/slot1_retail_mcrom.cpp
+++ b/desmume/src/addons/slot1_retail_mcrom.cpp
@@ -39,7 +39,7 @@ public:
 
 	virtual Slot1Info const* info()
 	{
-		static Slot1InfoSimple info("Retail MC+ROM","Slot1 Retail MC+ROM (standard) card emulation");
+		static Slot1InfoSimple info("Retail MC+ROM", "Slot1 Retail MC+ROM (standard) card emulation", 0x01);
 		return &info;
 	}
 
diff --git a/desmume/src/addons/slot1_retail_mcrom_debug.cpp b/desmume/src/addons/slot1_retail_mcrom_debug.cpp
index 742b3fadb..f556bff79 100644
--- a/desmume/src/addons/slot1_retail_mcrom_debug.cpp
+++ b/desmume/src/addons/slot1_retail_mcrom_debug.cpp
@@ -45,7 +45,7 @@ public:
 
 	virtual Slot1Info const* info()
 	{
-		static Slot1InfoSimple info("Retail DEBUG","Slot1 Retail (standard) card emulation + FS Nitro DEBUG");
+		static Slot1InfoSimple info("Retail DEBUG","Slot1 Retail (standard) card emulation + FS Nitro DEBUG", 0x04);
 		return &info;
 	}
 
diff --git a/desmume/src/addons/slot1_retail_nand.cpp b/desmume/src/addons/slot1_retail_nand.cpp
index ad7337ffd..1474376e9 100644
--- a/desmume/src/addons/slot1_retail_nand.cpp
+++ b/desmume/src/addons/slot1_retail_nand.cpp
@@ -50,7 +50,7 @@ private:
 public:
 	virtual Slot1Info const* info()
 	{
-		static Slot1InfoSimple info("Retail NAND","Slot1 retail NAND card emulation");
+		static Slot1InfoSimple info("Retail NAND","Slot1 retail NAND card emulation", 0x02);
 		return &info;
 	}
 
diff --git a/desmume/src/slot1.cpp b/desmume/src/slot1.cpp
index 74bebc8b4..7708b6d32 100644
--- a/desmume/src/slot1.cpp
+++ b/desmume/src/slot1.cpp
@@ -164,6 +164,26 @@ bool slot1_Change(NDS_SLOT1_TYPE changeToType)
 	return true;
 }
 
+bool slot1_getTypeByID(u8 ID, NDS_SLOT1_TYPE &type)
+{
+	for (u8 i = 0; i < NDS_SLOT1_COUNT; i++)
+	{
+		if (slot1_List[i]->info()->id() == ID)
+		{
+			type = (NDS_SLOT1_TYPE)i;
+			return true;
+		}
+	}
+	return false;
+}
+
+bool slot1_ChangeByID(u8 ID)
+{
+	NDS_SLOT1_TYPE type = NDS_SLOT1_RETAIL_AUTO;
+	slot1_getTypeByID(ID, type);
+	return slot1_Change(type);
+}
+
 NDS_SLOT1_TYPE slot1_GetCurrentType()
 {
 	return slot1_device_type;
diff --git a/desmume/src/slot1.h b/desmume/src/slot1.h
index e9d46be56..bf57539f9 100644
--- a/desmume/src/slot1.h
+++ b/desmume/src/slot1.h
@@ -31,20 +31,24 @@ class Slot1Info
 public:
 	virtual const char* name() const = 0;
 	virtual const char* descr()const  = 0;
+	virtual const u8 id() const  = 0;
 };
 
 class Slot1InfoSimple : public Slot1Info
 {
 public:
-	Slot1InfoSimple(const char* _name, const char* _descr)
+	Slot1InfoSimple(const char* _name, const char* _descr, const u8 _id)
 		: mName(_name)
 		, mDescr(_descr)
+		, mID(_id)
 	{
 	}
 	virtual const char* name() const { return mName; }
 	virtual const char* descr() const { return mDescr; }
+	virtual const u8 id() const { return mID; }
 private:
 	const char* mName, *mDescr;
+	const u8 mID;
 };
 
 class ISlot1Interface
@@ -93,12 +97,12 @@ typedef ISlot1Interface* TISlot1InterfaceConstructor();
 
 enum NDS_SLOT1_TYPE
 {
-	NDS_SLOT1_NONE,
-	NDS_SLOT1_RETAIL_AUTO,	//autodetect which kind of retail card to use 
-	NDS_SLOT1_R4,			//R4 flash card
-	NDS_SLOT1_RETAIL_NAND,	//Made in Ore/WarioWare D.I.Y.
-	NDS_SLOT1_RETAIL_MCROM,	//a standard MC (eeprom, flash, fram) -bearing retail card. Also supports motion, for now, because that's the way we originally coded it
-	NDS_SLOT1_RETAIL_DEBUG,	//for romhacking and fan-made translations
+	NDS_SLOT1_NONE,			// 0xFF - None
+	NDS_SLOT1_RETAIL_AUTO,	// 0xFE - autodetect which kind of retail card to use 
+	NDS_SLOT1_R4,			// 0x03 - R4 flash card
+	NDS_SLOT1_RETAIL_NAND,	// 0x02 - Made in Ore/WarioWare D.I.Y.
+	NDS_SLOT1_RETAIL_MCROM,	// 0x01 - a standard MC (eeprom, flash, fram) -bearing retail card. Also supports motion, for now, because that's the way we originally coded it
+	NDS_SLOT1_RETAIL_DEBUG,	// 0x04 - for romhacking and fan-made translations
 	NDS_SLOT1_COUNT			//use to count addons - MUST BE LAST!!!
 };
 
@@ -115,9 +119,14 @@ void slot1_Loadstate(EMUFILE* is);
 //just disconnects and reconnects the device. ideally, the disconnection and connection would be called with sensible timing
 void slot1_Reset();
 
+bool slot1_getTypeByID(u8 ID, NDS_SLOT1_TYPE &type);
+
 //change the current device
 bool slot1_Change(NDS_SLOT1_TYPE type);
 
+//change the current device by ID
+bool slot1_ChangeByID(u8 ID);
+
 //check on the current device
 NDS_SLOT1_TYPE slot1_GetCurrentType();
 
diff --git a/desmume/src/slot2.cpp b/desmume/src/slot2.cpp
index 2dbef1ce6..45c423bfd 100644
--- a/desmume/src/slot2.cpp
+++ b/desmume/src/slot2.cpp
@@ -115,7 +115,7 @@ bool slot2_Change(NDS_SLOT2_TYPE changeToType)
 	return true;
 }
 
-bool getTypeByID(u8 ID, NDS_SLOT2_TYPE &type)
+bool slot2_getTypeByID(u8 ID, NDS_SLOT2_TYPE &type)
 {
 	for (u8 i = 0; i < NDS_SLOT2_COUNT; i++)
 	{
@@ -131,7 +131,7 @@ bool getTypeByID(u8 ID, NDS_SLOT2_TYPE &type)
 bool slot2_ChangeByID(u8 ID)
 {
 	NDS_SLOT2_TYPE type = NDS_SLOT2_AUTO;
-	getTypeByID(ID, type);
+	slot2_getTypeByID(ID, type);
 	return slot2_Change(type);
 }
 
diff --git a/desmume/src/slot2.h b/desmume/src/slot2.h
index 952f26f43..621dff064 100644
--- a/desmume/src/slot2.h
+++ b/desmume/src/slot2.h
@@ -111,7 +111,7 @@ void slot2_Reset();
 //change the current device
 bool slot2_Change(NDS_SLOT2_TYPE type);
 
-bool getTypeByID(u8 ID, NDS_SLOT2_TYPE &type);
+bool slot2_getTypeByID(u8 ID, NDS_SLOT2_TYPE &type);
 
 //change the current device by ID
 bool slot2_ChangeByID(u8 ID);
diff --git a/desmume/src/windows/main.cpp b/desmume/src/windows/main.cpp
index 31444de08..a2f02a958 100644
--- a/desmume/src/windows/main.cpp
+++ b/desmume/src/windows/main.cpp
@@ -3163,7 +3163,7 @@ int _main()
 
 	int slot2_device_id = (NDS_SLOT2_TYPE)GetPrivateProfileInt("Slot2", "id", slot2_List[NDS_SLOT2_AUTO]->info()->id(), IniName);
 	NDS_SLOT2_TYPE slot2_device_type = NDS_SLOT2_AUTO;
-	getTypeByID(slot2_device_id, slot2_device_type);
+	slot2_getTypeByID(slot2_device_id, slot2_device_type);
 
 	win32_CFlash_cfgMode = GetPrivateProfileInt("Slot2.CFlash", "fileMode", ADDON_CFLASH_MODE_RomPath, IniName);
 	win32_CFlash_cfgDirectory = GetPrivateProfileStdString("Slot2.CFlash", "path", "");
@@ -3186,7 +3186,10 @@ int _main()
 	}
 	
 	//override slot1 type with commandline, if present
-	int slot1_device_type = (NDS_SLOT1_TYPE)GetPrivateProfileInt("Slot1", "type", NDS_SLOT1_RETAIL_AUTO, IniName);
+	int slot1_device_id = (NDS_SLOT1_TYPE)GetPrivateProfileInt("Slot1", "id", slot1_List[NDS_SLOT1_RETAIL_AUTO]->info()->id(), IniName);
+	NDS_SLOT1_TYPE slot1_device_type = NDS_SLOT1_RETAIL_AUTO;
+	slot1_getTypeByID(slot1_device_id, slot1_device_type);
+
 	if(cmdline.slot1 != "")
 		WritePrivateProfileInt("Slot1","type",slot1_device_type,IniName);
 	else
diff --git a/desmume/src/windows/slot1_config.cpp b/desmume/src/windows/slot1_config.cpp
index 2aa793214..0cdb4f2e7 100644
--- a/desmume/src/windows/slot1_config.cpp
+++ b/desmume/src/windows/slot1_config.cpp
@@ -349,9 +349,9 @@ void slot1Dialog(HWND hwnd)
 			default:
 				return;
 		}
-		WritePrivateProfileInt("Slot1","type",temp_type_slot1,IniName);
-
+		
 		slot1_Change((NDS_SLOT1_TYPE)temp_type_slot1);
+		WritePrivateProfileInt("Slot1", "id", slot1_List[temp_type_slot1]->info()->id(), IniName);
 		
 		return;
 	}