diff --git a/reactos/drivers/dd/vidport/vidport.c b/reactos/drivers/dd/vidport/vidport.c
index 5a347097f3e..bcf9b144e93 100644
--- a/reactos/drivers/dd/vidport/vidport.c
+++ b/reactos/drivers/dd/vidport/vidport.c
@@ -1,4 +1,4 @@
-/* $Id: vidport.c,v 1.12 2000/03/17 21:02:58 jfilby Exp $
+/* $Id: vidport.c,v 1.13 2000/03/19 13:31:36 ekohl Exp $
  *
  * VideoPort driver
  *   Written by Rex Jolliff
@@ -53,12 +53,22 @@ VideoPortCompareMemory(IN PVOID  Source1,
   return RtlCompareMemory(Source1, Source2, Length);
 }
 
-VOID 
-STDCALL
-VideoPortDebugPrint(IN ULONG DebugPrintLevel, 
+VOID
+VideoPortDebugPrint(IN ULONG DebugPrintLevel,
                     IN PCHAR DebugMessage, ...)
 {
-  UNIMPLEMENTED;
+	char Buffer[256];
+	va_list ap;
+
+/*
+	if (DebugPrintLevel > InternalDebugLevel)
+		return;
+*/
+	va_start (ap, DebugMessage);
+	vsprintf (Buffer, DebugMessage, ap);
+	va_end (ap);
+
+	DbgPrint (Buffer);
 }
 
 VP_STATUS 
diff --git a/reactos/drivers/dd/vidport/vidport.def b/reactos/drivers/dd/vidport/vidport.def
index ad49e3715a4..1d36f63a591 100644
--- a/reactos/drivers/dd/vidport/vidport.def
+++ b/reactos/drivers/dd/vidport/vidport.def
@@ -1,10 +1,10 @@
-; $Id: vidport.def,v 1.2 1999/10/28 06:58:05 rex Exp $
+; $Id: vidport.def,v 1.3 2000/03/19 13:31:37 ekohl Exp $
 ;
 ; vidport.def - export definition file for ReactOS
 ;
 EXPORTS
 VideoPortCompareMemory@12
-VideoPortDebugPrint@0
+VideoPortDebugPrint
 VideoPortDisableInterrupt@4
 VideoPortEnableInterrupt@4
 VideoPortFreeDeviceBase@8
diff --git a/reactos/drivers/dd/vidport/vidport.edf b/reactos/drivers/dd/vidport/vidport.edf
index 806acf15313..85455d204ec 100644
--- a/reactos/drivers/dd/vidport/vidport.edf
+++ b/reactos/drivers/dd/vidport/vidport.edf
@@ -1,10 +1,10 @@
-; $Id: vidport.edf,v 1.1 1999/10/28 23:35:34 rex Exp $
+; $Id: vidport.edf,v 1.2 2000/03/19 13:31:37 ekohl Exp $
 ;
 ; vidport.def - export definition file for ReactOS
 ;
 EXPORTS
 VideoPortCompareMemory=VideoPortCompareMemory@12
-VideoPortDebugPrint=VideoPortDebugPrint@0
+VideoPortDebugPrint
 VideoPortDisableInterrupt=VideoPortDisableInterrupt@4
 VideoPortEnableInterrupt=VideoPortEnableInterrupt@4
 VideoPortFreeDeviceBase=VideoPortFreeDeviceBase@8
diff --git a/reactos/include/ddk/ntddvid.h b/reactos/include/ddk/ntddvid.h
index e9b2ff37d45..176fe05e570 100644
--- a/reactos/include/ddk/ntddvid.h
+++ b/reactos/include/ddk/ntddvid.h
@@ -306,7 +306,7 @@ typedef struct _VIDEO_SHARE_MEMORY
 } VIDEO_SHARE_MEMORY, *PVIDEO_SHARE_MEMORY;
 
 ULONG STDCALL VideoPortCompareMemory(IN PVOID  Source1, IN PVOID  Source2, IN ULONG  Length);
-VOID STDCALL VideoPortDebugPrint(IN ULONG DebugPrintLevel, IN PCHAR DebugMessage, ...);
+VOID VideoPortDebugPrint(IN ULONG DebugPrintLevel, IN PCHAR DebugMessage, ...);
 VP_STATUS STDCALL VideoPortDisableInterrupt(IN PVOID  HwDeviceExtension);
 VP_STATUS STDCALL VideoPortEnableInterrupt(IN PVOID  HwDeviceExtension);
 VOID STDCALL VideoPortFreeDeviceBase(IN PVOID  HwDeviceExtension, IN PVOID  MappedAddress);