diff --git a/reactos/hal/halx86/generic/halinit.c b/reactos/hal/halx86/generic/halinit.c
index ba203a39415..c41f1084a6a 100644
--- a/reactos/hal/halx86/generic/halinit.c
+++ b/reactos/hal/halx86/generic/halinit.c
@@ -1,4 +1,4 @@
-/* $Id: halinit.c,v 1.2 2004/12/04 21:40:55 gvg Exp $
+/* $Id: halinit.c,v 1.3 2004/12/04 22:52:59 gvg Exp $
  *
  * COPYRIGHT:     See COPYING in the top level directory
  * PROJECT:       ReactOS kernel
@@ -20,6 +20,7 @@
 /* GLOBALS *****************************************************************/
 
 PVOID HalpZeroPageMapping = NULL;
+HALP_HOOKS HalpHooks;
 
 /* FUNCTIONS ***************************************************************/
 
@@ -38,6 +39,7 @@ HalInitSystem (ULONG BootPhase,
 {
   if (BootPhase == 0)
     {
+      RtlZeroMemory(&HalpHooks, sizeof(HALP_HOOKS));
       HalpInitPhase0();      
     }
   else if (BootPhase == 1)
diff --git a/reactos/hal/halx86/generic/pci.c b/reactos/hal/halx86/generic/pci.c
index 79d58aa562f..99b1ba8cc58 100644
--- a/reactos/hal/halx86/generic/pci.c
+++ b/reactos/hal/halx86/generic/pci.c
@@ -1,4 +1,4 @@
-/* $Id: pci.c,v 1.1 2004/12/03 20:10:43 gvg Exp $
+/* $Id: pci.c,v 1.2 2004/12/04 22:52:59 gvg Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -21,6 +21,7 @@
 #include <ddk/ntddk.h>
 #include <bus.h>
 #include <halirq.h>
+#include <hal.h>
 
 #define NDEBUG
 #include <internal/debug.h>
@@ -764,6 +765,10 @@ HalpInitPciBus(VOID)
 //		(pGetSetBusData)HalpAdjustPciResourceList;
   BusHandler->AssignSlotResources =
     (pAssignSlotResources)HalpAssignPciSlotResources;
+  if (NULL != HalpHooks.InitPciBus)
+    {
+      HalpHooks.InitPciBus(0, BusHandler);
+    }
 
 
   /* agp bus (bus 1) handler */
@@ -780,6 +785,10 @@ HalpInitPciBus(VOID)
 //		(pGetSetBusData)HalpAdjustPciResourceList;
   BusHandler->AssignSlotResources =
     (pAssignSlotResources)HalpAssignPciSlotResources;
+  if (NULL != HalpHooks.InitPciBus)
+    {
+      HalpHooks.InitPciBus(1, BusHandler);
+    }
 
 
   /* PCI bus (bus 2) handler */
@@ -796,6 +805,10 @@ HalpInitPciBus(VOID)
 //		(pGetSetBusData)HalpAdjustPciResourceList;
   BusHandler->AssignSlotResources =
     (pAssignSlotResources)HalpAssignPciSlotResources;
+  if (NULL != HalpHooks.InitPciBus)
+    {
+      HalpHooks.InitPciBus(2, BusHandler);
+    }
 
   DPRINT("HalpInitPciBus() finished.\n");
 }
diff --git a/reactos/hal/halx86/include/hal.h b/reactos/hal/halx86/include/hal.h
index 9388831f5c6..395bdc27df0 100644
--- a/reactos/hal/halx86/include/hal.h
+++ b/reactos/hal/halx86/include/hal.h
@@ -433,8 +433,11 @@ static inline VOID Ki386WriteFsByte(ULONG offset, BYTE value)
 #error Unknown compiler for inline assembler
 #endif
 
+typedef struct tagHALP_HOOKS
+{
+  void (*InitPciBus)(ULONG BusNumber, PBUS_HANDLER BusHandler);
+} HALP_HOOKS, *PHALP_HOOKS;
 
-
-
+extern HALP_HOOKS HalpHooks;
 
 #endif /* __INTERNAL_HAL_HAL_H */
diff --git a/reactos/hal/halx86/xbox/Makefile b/reactos/hal/halx86/xbox/Makefile
index 17c122737fe..36c16349c3f 100644
--- a/reactos/hal/halx86/xbox/Makefile
+++ b/reactos/hal/halx86/xbox/Makefile
@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.1 2004/12/04 21:43:37 gvg Exp $
+# $Id: Makefile,v 1.2 2004/12/04 22:52:59 gvg Exp $
 
 PATH_TO_TOP = ../../..
 
@@ -64,7 +64,8 @@ XBOX_OBJECTS = \
 flashleds.o \
 	display_xbox.o \
 	font.o \
-	halinit_xbox.o
+	halinit_xbox.o \
+	pci_xbox.o
 
 HAL_OBJECTS = $(GENERIC_OBJECTS) $(XBOX_OBJECTS)
 
diff --git a/reactos/hal/halx86/xbox/halinit_xbox.c b/reactos/hal/halx86/xbox/halinit_xbox.c
index 909683eb203..9bca0948cc7 100644
--- a/reactos/hal/halx86/xbox/halinit_xbox.c
+++ b/reactos/hal/halx86/xbox/halinit_xbox.c
@@ -1,4 +1,4 @@
-/* $Id: halinit_xbox.c,v 1.1 2004/12/04 21:43:37 gvg Exp $
+/* $Id: halinit_xbox.c,v 1.2 2004/12/04 22:52:59 gvg Exp $
  *
  * COPYRIGHT:     See COPYING in the top level directory
  * PROJECT:       ReactOS kernel
@@ -13,6 +13,7 @@
 
 #include <ddk/ntddk.h>
 #include <hal.h>
+#include "halxbox.h"
 
 #define NDEBUG
 #include <internal/debug.h>
@@ -22,6 +23,8 @@
 VOID
 HalpInitPhase0(VOID)
 {
+  HalpHooks.InitPciBus = HalpXboxInitPciBus;
+
   HalpInitPICs();
 
   /* Setup busy waiting */
diff --git a/reactos/hal/halx86/xbox/halxbox.h b/reactos/hal/halx86/xbox/halxbox.h
index baf6424f31f..823054c90cc 100644
--- a/reactos/hal/halx86/xbox/halxbox.h
+++ b/reactos/hal/halx86/xbox/halxbox.h
@@ -1,4 +1,4 @@
-/* $Id: halxbox.h,v 1.1 2004/12/04 21:43:37 gvg Exp $
+/* $Id: halxbox.h,v 1.2 2004/12/04 22:52:59 gvg Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         Xbox HAL
@@ -14,6 +14,8 @@
 
 extern BYTE XboxFont8x16[256 * 16];
 
+void HalpXboxInitPciBus(ULONG BusNumber, PBUS_HANDLER BusHandler);
+
 #endif /* HALXBOX_H_INCLUDED */
 
 /* EOF */
diff --git a/reactos/hal/halx86/xbox/pci_xbox.c b/reactos/hal/halx86/xbox/pci_xbox.c
new file mode 100644
index 00000000000..3a520a1dfb1
--- /dev/null
+++ b/reactos/hal/halx86/xbox/pci_xbox.c
@@ -0,0 +1,71 @@
+/* $Id: pci_xbox.c,v 1.1 2004/12/04 22:52:59 gvg Exp $
+ *
+ * COPYRIGHT:     See COPYING in the top level directory
+ * PROJECT:       ReactOS kernel
+ * FILE:          hal/halx86/xbox/pci_xbox.c
+ * PURPOSE:       Xbox specific handling of PCI cards
+ * PROGRAMMER:    Ge van Geldorp (gvg@reactos.com)
+ * UPDATE HISTORY:
+ *             2004/12/04: Created
+ */
+
+/* INCLUDES *****************************************************************/
+
+#include <ddk/ntddk.h>
+#include <hal.h>
+#include <bus.h>
+#include "halxbox.h"
+
+#define NDEBUG
+#include <internal/debug.h>
+
+/* VARIABLES ***************************************************************/
+
+static ULONG (* STDCALL GenericGetPciData)(PBUS_HANDLER BusHandler,
+                                           ULONG BusNumber,
+                                           ULONG SlotNumber,
+                                           PVOID Buffer,
+                                           ULONG Offset,
+                                           ULONG Length);
+
+/* FUNCTIONS ***************************************************************/
+
+static ULONG STDCALL
+HalpXboxGetPciData(PBUS_HANDLER BusHandler,
+                   ULONG BusNumber,
+                   ULONG SlotNumber,
+                   PVOID Buffer,
+                   ULONG Offset,
+                   ULONG Length)
+{
+  DPRINT("HalpXboxGetPciData() called.\n");
+  DPRINT("  BusNumber %lu\n", BusNumber);
+  DPRINT("  SlotNumber %lu\n", SlotNumber);
+  DPRINT("  Offset 0x%lx\n", Offset);
+  DPRINT("  Length 0x%lx\n", Length);
+
+  if (0 == BusNumber && (1 == ((SlotNumber >> 5) & 0x07) || 2 == ((SlotNumber >> 5) & 0x07)))
+    {
+      DPRINT("Blacklisted PCI slot\n");
+      if (0 == Offset && 2 <= Length)
+        {
+          *(PUSHORT)Buffer = PCI_INVALID_VENDORID;
+          return 2;
+        }
+      return 0;
+    }
+
+  return GenericGetPciData(BusHandler, BusNumber, SlotNumber, Buffer, Offset, Length);
+}
+
+void
+HalpXboxInitPciBus(ULONG BusNumber, PBUS_HANDLER BusHandler)
+{
+  if (0 == BusNumber)
+    {
+      GenericGetPciData = BusHandler->GetBusData;
+      BusHandler->GetBusData = HalpXboxGetPciData;
+    }
+}
+
+/* EOF */