diff --git a/sdk/xtdk/bltypes.h b/sdk/xtdk/bltypes.h
index 5971eef..4bdbe79 100644
--- a/sdk/xtdk/bltypes.h
+++ b/sdk/xtdk/bltypes.h
@@ -71,7 +71,7 @@ typedef VOID (*PBL_CONSOLE_RESET_INPUT_BUFFER)();
 typedef VOID (*PBL_CONSOLE_SET_ATTRIBUTES)(IN ULONGLONG Attributes);
 typedef VOID (*PBL_CONSOLE_SET_CURSOR_POSITION)(IN ULONGLONG PosX, IN ULONGLONG PosY);
 typedef VOID (*PBL_CONSOLE_WRITE)(IN PCWSTR String);
-typedef SIZE_T (*PBL_COMPARE_MEMORY)(IN PCVOID LeftBuffer, IN PCVOID RightBuffer, IN SIZE_T Length);
+typedef SIZE_T (XTAPI *PBL_COMPARE_MEMORY)(IN PCVOID LeftBuffer, IN PCVOID RightBuffer, IN SIZE_T Length);
 typedef SIZE_T (XTAPI *PBL_WIDESTRING_COMPARE)(IN PCWSTR String1, IN PCWSTR String2, IN SIZE_T Length);
 typedef VOID (XTAPI *PBL_COPY_MEMORY)(OUT PVOID Destination, IN PCVOID Source, IN SIZE_T Length);
 typedef VOID (*PBL_DEBUG_PRINT)(IN PCWSTR Format, IN ...);
@@ -101,7 +101,7 @@ typedef VOID (XTCDECL *PBL_LLIST_REMOVE_ENTRY)(IN PLIST_ENTRY Entry);
 typedef EFI_STATUS (*PBL_MAP_EFI_MEMORY)(IN OUT PXTBL_PAGE_MAPPING PageMap, IN OUT PVOID *MemoryMapAddress, IN PBL_GET_MEMTYPE_ROUTINE GetMemoryTypeRoutine);
 typedef EFI_STATUS (*PBL_MAP_PAGE)(IN PXTBL_PAGE_MAPPING PageMap, IN ULONG_PTR VirtualAddress, IN ULONG_PTR PhysicalAddress, IN ULONG NumberOfPages);
 typedef EFI_STATUS (*PBL_MAP_VIRTUAL_MEMORY)(IN OUT PXTBL_PAGE_MAPPING PageMap, IN PVOID VirtualAddress, IN PVOID PhysicalAddress, IN ULONGLONG NumberOfPages, IN LOADER_MEMORY_TYPE MemoryType);
-typedef VOID (*PBL_MOVE_MEMORY)(IN OUT PVOID Destination, IN PCVOID Source, IN SIZE_T Length);
+typedef VOID (XTAPI *PBL_MOVE_MEMORY)(IN OUT PVOID Destination, IN PCVOID Source, IN SIZE_T Length);
 typedef EFI_STATUS (*PBL_OPEN_VOLUME)(IN PEFI_DEVICE_PATH_PROTOCOL DevicePath, OUT PEFI_HANDLE DiskHandle, OUT PEFI_FILE_HANDLE *FsHandle);
 typedef EFI_STATUS (*PBL_OPEN_PROTOCOL)(OUT PEFI_HANDLE Handle, OUT PVOID *ProtocolHandler, IN PEFI_GUID ProtocolGuid);
 typedef EFI_STATUS (*PBL_OPEN_PROTOCOL_HANDLE)(IN EFI_HANDLE Handle, OUT PVOID *ProtocolHandler, IN PEFI_GUID ProtocolGuid);
diff --git a/xtldr/modules/xtos_o/i686/memory.cc b/xtldr/modules/xtos_o/i686/memory.cc
index b0b4203..d31103e 100644
--- a/xtldr/modules/xtos_o/i686/memory.cc
+++ b/xtldr/modules/xtos_o/i686/memory.cc
@@ -26,11 +26,11 @@ Xtos::DeterminePagingLevel(IN CONST PWCHAR Parameters)
     CPUID_REGISTERS CpuRegisters;
 
     /* Prepare CPUID registers to query for PAE support */
-    RtlZeroMemory(&CpuRegisters, sizeof(CPUID_REGISTERS));
+    XtLdrProtocol->Memory.ZeroMemory(&CpuRegisters, sizeof(CPUID_REGISTERS));
     CpuRegisters.Leaf = CPUID_GET_STANDARD1_FEATURES;
 
     /* Query CPUID */
-    ArCpuId(&CpuRegisters);
+    XtLdrProtocol->Cpu.CpuId(&CpuRegisters);
 
     /* Check if eXtended Physical Addressing (XPA) is enabled and if PAE is supported by the CPU */
     if((CpuRegisters.Edx & CPUID_FEATURES_EDX_PAE) &&
@@ -89,27 +89,27 @@ Xtos::EnablePaging(IN PXTBL_PAGE_MAPPING PageMap)
     }
 
     /* Disable paging */
-    ArWriteControlRegister(0, ArReadControlRegister(0) & ~CR0_PG);
+    XtLdrProtocol->Cpu.WriteControlRegister(0, XtLdrProtocol->Cpu.ReadControlRegister(0) & ~CR0_PG);
 
     /* Check the configured page map level to set the PAE state accordingly */
     if(PageMap->PageMapLevel == 3)
     {
         /* Enable Physical Address Extension (PAE) */
         XtLdrProtocol->Debug.Print(L"Enabling Physical Address Extension (PAE)\n");
-        ArWriteControlRegister(4, ArReadControlRegister(4) | CR4_PAE);
+        XtLdrProtocol->Cpu.WriteControlRegister(4, XtLdrProtocol->Cpu.ReadControlRegister(4) | CR4_PAE);
     }
     else
     {
         /* Disable Physical Address Extension (PAE) */
         XtLdrProtocol->Debug.Print(L"Disabling Physical Address Extension (PAE)\n");
-        ArWriteControlRegister(4, ArReadControlRegister(4) & ~CR4_PAE);
+        XtLdrProtocol->Cpu.WriteControlRegister(4, XtLdrProtocol->Cpu.ReadControlRegister(4) & ~CR4_PAE);
     }
 
     /* Write page mappings to CR3 */
-    ArWriteControlRegister(3, (UINT_PTR)PageMap->PtePointer);
+    XtLdrProtocol->Cpu.WriteControlRegister(3, (UINT_PTR)PageMap->PtePointer);
 
     /* Enable paging */
-    ArWriteControlRegister(0, ArReadControlRegister(0) | CR0_PG);
+    XtLdrProtocol->Cpu.WriteControlRegister(0, XtLdrProtocol->Cpu.ReadControlRegister(0) | CR0_PG);
 
     /* Return success */
     return STATUS_EFI_SUCCESS;
@@ -143,7 +143,7 @@ Xtos::MapHardwareMemoryPool(IN PXTBL_PAGE_MAPPING PageMap)
     }
 
     /* Zero fill allocated memory */
-    RtlZeroMemory((PVOID)Address, EFI_PAGE_SIZE);
+    XtLdrProtocol->Memory.ZeroMemory((PVOID)Address, EFI_PAGE_SIZE);
 
     /* Check if PAE is enabled (3-level paging) */
     if(PageMap->PageMapLevel == 3)
@@ -152,7 +152,7 @@ Xtos::MapHardwareMemoryPool(IN PXTBL_PAGE_MAPPING PageMap)
         PdeBase = (PHARDWARE_MODERN_PTE)(((PHARDWARE_MODERN_PTE)PageMap->PtePointer)[MM_HARDWARE_VA_START >> MM_PPI_SHIFT].PageFrameNumber << MM_PAGE_SHIFT);
 
         /* Make PDE valid */
-        RtlZeroMemory(&PdeBase[(MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF], sizeof(HARDWARE_MODERN_PTE));
+        XtLdrProtocol->Memory.ZeroMemory(&PdeBase[(MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF], sizeof(HARDWARE_MODERN_PTE));
         PdeBase[(MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF].PageFrameNumber = Address >> MM_PAGE_SHIFT;
         PdeBase[(MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF].Valid = 1;
         PdeBase[(MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF].Writable = 1;
@@ -170,7 +170,7 @@ Xtos::MapHardwareMemoryPool(IN PXTBL_PAGE_MAPPING PageMap)
         }
 
         /* Make PDE valid  */
-        RtlZeroMemory(&LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT], sizeof(HARDWARE_LEGACY_PTE));
+        XtLdrProtocol->Memory.ZeroMemory(&LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT], sizeof(HARDWARE_LEGACY_PTE));
         LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT].Valid = 1;
         LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT].PageFrameNumber = Address >> MM_PAGE_SHIFT;
         LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT].Writable = 1;