diff --git a/reactos/hal/halx86/Makefile b/reactos/hal/halx86/Makefile
index 37286d2e28f..2da7f86fe94 100644
--- a/reactos/hal/halx86/Makefile
+++ b/reactos/hal/halx86/Makefile
@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.5 2002/09/08 10:22:24 chorns Exp $
+# $Id: Makefile,v 1.6 2002/10/02 19:32:57 ekohl Exp $
 
 PATH_TO_TOP = ../..
 
@@ -51,6 +51,7 @@ HAL_OBJECTS = \
 	isa.o \
 	kdbg.o \
 	mbr.o \
+	mca.o \
 	misc.o \
 	mp.o \
 	pci.o \
diff --git a/reactos/hal/halx86/bus.c b/reactos/hal/halx86/bus.c
index 4bcd6616b51..1ae83eea151 100644
--- a/reactos/hal/halx86/bus.c
+++ b/reactos/hal/halx86/bus.c
@@ -1,4 +1,4 @@
-/* $Id: bus.c,v 1.3 2002/09/08 10:22:24 chorns Exp $
+/* $Id: bus.c,v 1.4 2002/10/02 19:32:57 ekohl Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -172,6 +172,16 @@ HalpInitBusHandlers(VOID)
 
    BusHandler->TranslateBusAddress =
 	(pTranslateBusAddress)HalpTranslateIsaBusAddress;
+
+
+  /* add MicroChannel bus handler */
+  BusHandler = HalpAllocateBusHandler(MicroChannel,
+				      Pos,
+				      0);
+   if (BusHandler == NULL)
+     return;
+
+  BusHandler->GetBusData = (pGetSetBusData)HalpGetMicroChannelData;
 }
 
 
diff --git a/reactos/hal/halx86/include/bus.h b/reactos/hal/halx86/include/bus.h
index a2163d5e1f4..d77a470956a 100644
--- a/reactos/hal/halx86/include/bus.h
+++ b/reactos/hal/halx86/include/bus.h
@@ -110,6 +110,15 @@ HalpSetCmosData(PBUS_HANDLER BusHandler,
 		ULONG Offset,
 		ULONG Length);
 
+/* mca.h */
+ULONG STDCALL
+HalpGetMicroChannelData(PBUS_HANDLER BusHandler,
+			ULONG BusNumber,
+			ULONG SlotNumber,
+			PVOID Buffer,
+			ULONG Offset,
+			ULONG Length);
+
 #endif /* __INTERNAL_HAL_BUS_H */
 
 /* EOF */
diff --git a/reactos/hal/halx86/mca.c b/reactos/hal/halx86/mca.c
new file mode 100644
index 00000000000..97ff15addf6
--- /dev/null
+++ b/reactos/hal/halx86/mca.c
@@ -0,0 +1,70 @@
+/*
+ *  ReactOS kernel
+ *  Copyright (C) 2002 ReactOS Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/* $Id: mca.c,v 1.1 2002/10/02 19:32:57 ekohl Exp $
+ *
+ * COPYRIGHT:   See COPYING in the top level directory
+ * PROJECT:     ReactOS kernel
+ * FILE:        hal/halx86/mca.c
+ * PURPOSE:     Interfaces to the MicroChannel bus
+ * PROGRAMMER:  Eric Kohl (ekohl@rz-online.de)
+ */
+
+/* INCLUDES *****************************************************************/
+
+#include <ddk/ntddk.h>
+#include <bus.h>
+
+#define NDEBUG
+#include <internal/debug.h>
+
+
+/* FUNCTIONS ****************************************************************/
+
+ULONG STDCALL
+HalpGetMicroChannelData(PBUS_HANDLER BusHandler,
+			ULONG BusNumber,
+			ULONG SlotNumber,
+			PVOID Buffer,
+			ULONG Offset,
+			ULONG Length)
+{
+  PCM_MCA_POS_DATA PosData = (PCM_MCA_POS_DATA)Buffer;
+
+  DPRINT("HalpGetMicroChannelData() 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 ((BusNumber != 0) || (SlotNumber > 7) || (Length < sizeof(CM_MCA_POS_DATA)))
+    return(0);
+
+  WRITE_PORT_UCHAR((PUCHAR)0x96, ((UCHAR)SlotNumber & 0x07) | 0x08);
+
+  PosData->AdapterId = (READ_PORT_UCHAR((PUCHAR)0x101) << 8) +
+			READ_PORT_UCHAR((PUCHAR)0x100);
+  PosData->PosData1 = READ_PORT_UCHAR((PUCHAR)0x102);
+  PosData->PosData2 = READ_PORT_UCHAR((PUCHAR)0x103);
+  PosData->PosData3 = READ_PORT_UCHAR((PUCHAR)0x104);
+  PosData->PosData4 = READ_PORT_UCHAR((PUCHAR)0x105);
+
+  return(sizeof(CM_MCA_POS_DATA));
+}
+
+/* EOF */
diff --git a/reactos/include/ddk/haltypes.h b/reactos/include/ddk/haltypes.h
index 3113899c482..bf668bb5d56 100644
--- a/reactos/include/ddk/haltypes.h
+++ b/reactos/include/ddk/haltypes.h
@@ -1,4 +1,4 @@
-/* $Id: haltypes.h,v 1.5 2002/09/08 10:47:44 chorns Exp $
+/* $Id: haltypes.h,v 1.6 2002/10/02 19:30:46 ekohl Exp $
  *
  * COPYRIGHT:                See COPYING in the top level directory
  * PROJECT:                  ReactOS kernel
@@ -228,6 +228,18 @@ typedef struct _PCI_SLOT_NUMBER
 } PCI_SLOT_NUMBER, *PPCI_SLOT_NUMBER;
 
 
+/* MicroChannel bus data */
+
+typedef struct _CM_MCA_POS_DATA
+{
+  USHORT AdapterId;
+  UCHAR PosData1;
+  UCHAR PosData2;
+  UCHAR PosData3;
+  UCHAR PosData4;
+} CM_MCA_POS_DATA, *PCM_MCA_POS_DATA;
+
+
 /* Hal dispatch table */
 
 typedef enum _HAL_QUERY_INFORMATION_CLASS