diff --git a/include/dos_inc.h b/include/dos_inc.h
index 04c91b72..14a594b3 100644
--- a/include/dos_inc.h
+++ b/include/dos_inc.h
@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: dos_inc.h,v 1.65 2007-01-08 20:36:53 qbix79 Exp $ */
+/* $Id: dos_inc.h,v 1.66 2007-06-06 15:44:40 c2woody Exp $ */
 
 #ifndef DOSBOX_DOS_INC_H
 #define DOSBOX_DOS_INC_H
@@ -85,6 +85,9 @@ enum { RETURN_EXIT=0,RETURN_CTRLC=1,RETURN_ABORT=2,RETURN_TSR=3};
 #define DOS_SDA_OFS 0
 #define DOS_MEM_START 0x102					//First Segment that DOS can use
 
+#define DOS_PRIVATE_SEGMENT 0xc800
+#define DOS_PRIVATE_SEGMENT_END 0xd000
+
 /* internal Dos Tables */
 
 extern DOS_File * Files[DOS_FILES];
diff --git a/src/dos/dos_tables.cpp b/src/dos/dos_tables.cpp
index 5962f524..e8a4b26e 100644
--- a/src/dos/dos_tables.cpp
+++ b/src/dos/dos_tables.cpp
@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: dos_tables.cpp,v 1.26 2007-01-08 20:36:53 qbix79 Exp $ */
+/* $Id: dos_tables.cpp,v 1.27 2007-06-06 15:44:40 c2woody Exp $ */
 
 #include "dosbox.h"
 #include "mem.h"
@@ -40,10 +40,10 @@ RealPt DOS_TableLowCase;
 
 static Bitu call_casemap;
 
-static Bit16u dos_memseg;
+static Bit16u dos_memseg=DOS_PRIVATE_SEGMENT;
 
 Bit16u DOS_GetMemory(Bit16u pages) {
-	if (pages+dos_memseg>=0xd000) {
+	if (pages+dos_memseg>=DOS_PRIVATE_SEGMENT_END) {
 		E_Exit("DOS:Not enough memory for internal tables");
 	}
 	Bit16u page=dos_memseg;
@@ -73,7 +73,6 @@ static Bit8u country_info[0x22] = {
 };
 
 void DOS_SetupTables(void) {
-	dos_memseg=0xc800;
 	Bit16u seg,seg2;Bitu i;
 	dos.tables.mediaid=RealMake(DOS_GetMemory(4),0);
 	dos.tables.tempdta=RealMake(DOS_GetMemory(4),0);
diff --git a/src/ints/mouse.cpp b/src/ints/mouse.cpp
index b038727d..a0c8711b 100644
--- a/src/ints/mouse.cpp
+++ b/src/ints/mouse.cpp
@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: mouse.cpp,v 1.67 2007-06-03 16:46:33 c2woody Exp $ */
+/* $Id: mouse.cpp,v 1.68 2007-06-06 15:44:40 c2woody Exp $ */
 
 #include <string.h>
 #include <math.h>
@@ -961,8 +961,8 @@ Bitu MOUSE_UserInt_CB_Handler(void) {
 void MOUSE_Init(Section* sec) {
 	// Callback for mouse interrupt 0x33
 	call_int33=CALLBACK_Allocate();
-	RealPt i33loc=RealMake(CB_SEG+1,(call_int33*CB_SIZE)-0x10);
-//	RealPt i33loc=RealMake(DOS_GetMemory(0x1)-1,0x10);	// need another location
+//	RealPt i33loc=RealMake(CB_SEG+1,(call_int33*CB_SIZE)-0x10);
+	RealPt i33loc=RealMake(DOS_GetMemory(0x1)-1,0x10);
 	CALLBACK_Setup(call_int33,&INT33_Handler,CB_MOUSE,Real2Phys(i33loc),"Mouse");
 	// Wasteland needs low(seg(int33))!=0 and low(ofs(int33))!=0
 	real_writed(0,0x33<<2,i33loc);