diff --git a/gc/ogc/system.h b/gc/ogc/system.h
index 06063cf8..16d74410 100644
--- a/gc/ogc/system.h
+++ b/gc/ogc/system.h
@@ -140,8 +140,10 @@ distribution.
 #define SYS_GetArenaHi					SYS_GetArena1Hi
 #define SYS_SetArenaHi					SYS_SetArena1Hi
 #define SYS_GetArenaSize				SYS_GetArena1Size
-#define SYS_AllocArenaMemLo				SYS_AllocArena1MemLo
-#define SYS_AllocArenaMemHi				SYS_AllocArena1MemHi
+#define SYS_AllocArenaMemLo				SYS_AllocArenaMem1Lo
+#define SYS_AllocArenaMemHi				SYS_AllocArenaMem1Hi
+#define SYS_GetPhysicalMemSize			SYS_GetPhysicalMem1Size
+#define SYS_GetSimulatedMemSize			SYS_GetSimulatedMem1Size
 
 #ifdef __cplusplus
    extern "C" {
@@ -362,8 +364,10 @@ void SYS_SetArena1Lo(void *newLo);
 void* SYS_GetArena1Hi(void);
 void SYS_SetArena1Hi(void *newHi);
 u32 SYS_GetArena1Size(void);
-void* SYS_AllocArena1MemLo(u32 size,u32 align);
-void* SYS_AllocArena1MemHi(u32 size,u32 align);
+void* SYS_AllocArenaMem1Lo(u32 size,u32 align);
+void* SYS_AllocArenaMem1Hi(u32 size,u32 align);
+u32 SYS_GetPhysicalMem1Size(void);
+u32 SYS_GetSimulatedMem1Size(void);
 
 resetcallback SYS_SetResetCallback(resetcallback cb);
 
@@ -377,8 +381,10 @@ void SYS_SetArena2Lo(void *newLo);
 void* SYS_GetArena2Hi(void);
 void SYS_SetArena2Hi(void *newHi);
 u32 SYS_GetArena2Size(void);
-void* SYS_AllocArena2MemLo(u32 size,u32 align);
-void* SYS_AllocArena2MemHi(u32 size,u32 align);
+void* SYS_AllocArenaMem2Lo(u32 size,u32 align);
+void* SYS_AllocArenaMem2Hi(u32 size,u32 align);
+u32 SYS_GetPhysicalMem2Size(void);
+u32 SYS_GetSimulatedMem2Size(void);
 
 powercallback SYS_SetPowerCallback(powercallback cb);
 #endif
diff --git a/libogc/lwp_wkspace.c b/libogc/lwp_wkspace.c
index d9a356fc..22d78d94 100644
--- a/libogc/lwp_wkspace.c
+++ b/libogc/lwp_wkspace.c
@@ -31,10 +31,10 @@ void __lwp_wkspace_init(u32 size)
 {
 	void *heap_addr = NULL;
 
-	heap_addr = SYS_AllocArena1MemLo(size,PPC_CACHE_ALIGNMENT);
+	heap_addr = SYS_AllocArenaMem1Lo(size,PPC_CACHE_ALIGNMENT);
 #if defined(HW_RVL)
 	if(!heap_addr)
-		heap_addr = SYS_AllocArena2MemLo(size,PPC_CACHE_ALIGNMENT);
+		heap_addr = SYS_AllocArenaMem2Lo(size,PPC_CACHE_ALIGNMENT);
 #endif
 	memset(heap_addr,0,size);
 	__wkspace_heap_size = __lwp_heap_init(&__wkspace_heap,heap_addr,size,PPC_ALIGNMENT);
diff --git a/libogc/network_wii.c b/libogc/network_wii.c
index 26a7d4bd..23b7fefd 100644
--- a/libogc/network_wii.c
+++ b/libogc/network_wii.c
@@ -259,7 +259,7 @@ static s32 NetCreateHeap(void)
 		return IPC_OK;
 	}
 
-	net_heap_ptr = SYS_AllocArena2MemHi(NET_HEAP_SIZE, 32);
+	net_heap_ptr = SYS_AllocArenaMem2Hi(NET_HEAP_SIZE, 32);
 	if(!net_heap_ptr)
 	{
 		_CPU_ISR_Restore(level);
diff --git a/libogc/system.c b/libogc/system.c
index 7975a163..a4638138 100644
--- a/libogc/system.c
+++ b/libogc/system.c
@@ -1165,10 +1165,7 @@ void SYS_ResetSystem(s32 reset,u32 reset_code,s32 force_menu)
 
 	__PADDisableRecalibration(ret);
 }
-#endif
-
-#if defined(HW_RVL)
-
+#elif defined(HW_RVL)
 void SYS_ResetSystem(s32 reset,u32 reset_code,s32 force_menu)
 {
 	u32 ret = 0;
@@ -1310,7 +1307,7 @@ u32 SYS_GetArena1Size(void)
 	return size;
 }
 
-void* SYS_AllocArena1MemLo(u32 size,u32 align)
+void* SYS_AllocArenaMem1Lo(u32 size,u32 align)
 {
 	u32 level;
 	void *arenalo,*ptr;
@@ -1329,7 +1326,7 @@ void* SYS_AllocArena1MemLo(u32 size,u32 align)
 	return ptr;
 }
 
-void* SYS_AllocArena1MemHi(u32 size,u32 align)
+void* SYS_AllocArenaMem1Hi(u32 size,u32 align)
 {
 	u32 level;
 	void *arenahi,*ptr;
@@ -1347,7 +1344,36 @@ void* SYS_AllocArena1MemHi(u32 size,u32 align)
 	return ptr;
 }
 
-#if defined(HW_RVL)
+#if defined(HW_DOL)
+u32 SYS_GetPhysicalMem1Size(void)
+{
+	u32 size;
+	size = *((u32*)0x80000028);
+	return size;
+}
+
+u32 SYS_GetSimulatedMem1Size(void)
+{
+	u32 size;
+	size = *((u32*)0x800000f0);
+	if(!size) size = *((u32*)0x80000028);
+	return size;
+}
+#elif defined(HW_RVL)
+u32 SYS_GetPhysicalMem1Size(void)
+{
+	u32 size;
+	size = *((u32*)0x80003100);
+	return size;
+}
+
+u32 SYS_GetSimulatedMem1Size(void)
+{
+	u32 size;
+	size = *((u32*)0x80003104);
+	return size;
+}
+
 void SYS_SetArena2Lo(void *newLo)
 {
 	u32 level;
@@ -1401,7 +1427,7 @@ u32 SYS_GetArena2Size(void)
 	return size;
 }
 
-void* SYS_AllocArena2MemLo(u32 size,u32 align)
+void* SYS_AllocArenaMem2Lo(u32 size,u32 align)
 {
 	u32 level;
 	void *arenalo,*ptr;
@@ -1420,7 +1446,7 @@ void* SYS_AllocArena2MemLo(u32 size,u32 align)
 	return ptr;
 }
 
-void* SYS_AllocArena2MemHi(u32 size,u32 align)
+void* SYS_AllocArenaMem2Hi(u32 size,u32 align)
 {
 	u32 level;
 	void *arenahi,*ptr;
@@ -1437,6 +1463,20 @@ void* SYS_AllocArena2MemHi(u32 size,u32 align)
 	_CPU_ISR_Restore(level);
 	return ptr;
 }
+
+u32 SYS_GetPhysicalMem2Size(void)
+{
+	u32 size;
+	size = *((u32*)0x80003118);
+	return size;
+}
+
+u32 SYS_GetSimulatedMem2Size(void)
+{
+	u32 size;
+	size = *((u32*)0x8000311c);
+	return size;
+}
 #endif
 
 void SYS_ProtectRange(u32 chan,void *addr,u32 bytes,u32 cntrl)
@@ -1462,7 +1502,6 @@ void SYS_ProtectRange(u32 chan,void *addr,u32 bytes,u32 cntrl)
 		if(cntrl==SYS_PROTECTRDWR)
 			__MaskIrq(IRQMASK(chan));
 
-
 		_CPU_ISR_Restore(level);
 	}
 }
diff --git a/libogc/usbstorage.c b/libogc/usbstorage.c
index e513f823..3fb800cd 100644
--- a/libogc/usbstorage.c
+++ b/libogc/usbstorage.c
@@ -209,7 +209,7 @@ s32 USBStorage_Initialize(void)
 
 	_CPU_ISR_Disable(level);
 	if(!arena_ptr) {
-		arena_ptr = SYS_AllocArena2MemHi(HEAP_SIZE, 32);
+		arena_ptr = SYS_AllocArenaMem2Hi(HEAP_SIZE, 32);
 		if(!arena_ptr) {
 			_CPU_ISR_Restore(level);
 			return IPC_ENOMEM;
diff --git a/lwbt/physbusif.c b/lwbt/physbusif.c
index 8be0da4f..f39468d8 100644
--- a/lwbt/physbusif.c
+++ b/lwbt/physbusif.c
@@ -175,7 +175,7 @@ static s32 __initUsbIOBuffer(struct memb_blks *blk,u32 buf_size,u32 num_bufs)
 	u8 *ptr = NULL;
 
 	len = ((MEM_ALIGN_SIZE(buf_size)+sizeof(u32))*num_bufs);
-	ptr = (u8*)SYS_AllocArena2MemHi(len,32);
+	ptr = (u8*)SYS_AllocArenaMem2Hi(len,32);
 	if(ptr==NULL) return -4;
 
 	blk->size = buf_size;