diff --git a/sys/kern/systm.pas b/sys/kern/systm.pas
index 86187ee7..a58fefc1 100644
--- a/sys/kern/systm.pas
+++ b/sys/kern/systm.pas
@@ -43,6 +43,7 @@ begin
  if (counter<maxlen) then
  begin
   _to[counter]:=#0;
+  Inc(counter);
  end;
  if (lencopied<>nil) then
  begin
diff --git a/sys/md/vm_pmap.pas b/sys/md/vm_pmap.pas
index f3f7523c..013d2f20 100644
--- a/sys/md/vm_pmap.pas
+++ b/sys/md/vm_pmap.pas
@@ -323,10 +323,10 @@ const
   MD_PROT_R   ,//__R
   MD_PROT_W   ,//_W_
   MD_PROT_RW  ,//_WR
-  MD_PROT_X   ,//X__
-  MD_PROT_RX  ,//X_R
-  MD_PROT_WX  ,//XW_
-  MD_PROT_RWX  //XWR
+  MD_PROT_R   ,//X__
+  MD_PROT_R   ,//X_R
+  MD_PROT_RW  ,//XW_
+  MD_PROT_RW   //XWR
  );
 
 {
diff --git a/sys/vm/dmem_map.pas b/sys/vm/dmem_map.pas
index e6f0dce0..715f0d98 100644
--- a/sys/vm/dmem_map.pas
+++ b/sys/vm/dmem_map.pas
@@ -566,8 +566,6 @@ begin
    prev_entry^.__end:=__end;
    //change size
 
-   //dmem_rmap_enter(map,start,__end);
-
    dmem_map_entry_resize_free(map, prev_entry);
    dmem_map_simplify_entry(map, prev_entry);
    Exit(0);
@@ -1158,8 +1156,6 @@ begin
 
   next:=entry^.next;
 
-  //dmem_rmap_remove(map,entry^.start,entry^.__end);
-
   {
    * Delete the entry only after removing all pmap
    * entries pointing to its pages.  (Otherwise, its
diff --git a/sys/vm/vmparam.pas b/sys/vm/vmparam.pas
index f1dcb23b..ce3eb875 100644
--- a/sys/vm/vmparam.pas
+++ b/sys/vm/vmparam.pas
@@ -83,6 +83,7 @@ const
  FC`0000`0000 System Reserved
  FF`FFFF`FFFF
 
+                               0x0 00400000  (win stack)
                                0x1 00000000  (win image)
                             0x7FF8 xxxxxxxx  (win  dll)
  -- System Managed