diff --git a/components/thtmlport/package/ditherunit.pas b/components/thtmlport/package/ditherunit.pas
index 1ddcf2519..e7799f1f8 100644
--- a/components/thtmlport/package/ditherunit.pas
+++ b/components/thtmlport/package/ditherunit.pas
@@ -225,10 +225,10 @@ end;
 procedure Error(msg: string);
   function ReturnAddr: Pointer;
   // From classes.pas
-{$IFNDEF CPUPOWERPC}
+{$IFDEF CPU86}
   asm
     MOV		EAX,[EBP+4] // sysutils.pas says [EBP-4] !
-{$ELSE}  //Ignore for now on non-Intel.
+{$ELSE}  //Ignore for now on non-Intel/32-bit.
   begin
 {$ENDIF}
   end;
@@ -614,7 +614,7 @@ begin
 end;
 
 procedure TDIBWriter.CreateDIB;
-{$IFDEF PIXELFORMAT_TOO_SLOW}
+{$IFDEF PIXELFORMAT_TOO_SLOW}  // LCL port: Not defined with LCL to exclude assembler.
 var
   SrcColors		,
   DstColors		: WORD;
@@ -1131,14 +1131,26 @@ begin
   // Move on to next column
   if (FDirection = 1) then
   begin
+{$IFNDEF FPC}
     inc(longInt(ErrorR), sizeof(TErrorTerm));
     inc(longInt(ErrorG), sizeof(TErrorTerm));
     inc(longInt(ErrorB), sizeof(TErrorTerm));
+{$ELSE}  //Cast so safe for 64-bits.
+    inc(PtrUInt(ErrorR), sizeof(TErrorTerm));
+    inc(PtrUInt(ErrorG), sizeof(TErrorTerm));
+    inc(PtrUInt(ErrorB), sizeof(TErrorTerm));
+{$ENDIF}
   end else
   begin
+{$IFNDEF FPC}
     dec(longInt(ErrorR), sizeof(TErrorTerm));
     dec(longInt(ErrorG), sizeof(TErrorTerm));
     dec(longInt(ErrorB), sizeof(TErrorTerm));
+{$ELSE}
+    dec(PtrUInt(ErrorR), sizeof(TErrorTerm));
+    dec(PtrUInt(ErrorG), sizeof(TErrorTerm));
+    dec(PtrUInt(ErrorB), sizeof(TErrorTerm));
+{$ENDIF}
   end;
 end;
 {$IFDEF R_PLUS}
@@ -1635,8 +1647,13 @@ begin
         begin
           SrcScanline := DIBSource.ScanLine[Row];
           DstScanline := DIBResult.ScanLine[Row];
+{$IFNDEF FPC}
           Src := pointer(longInt(SrcScanLine) + Ditherer.Column*sizeof(TRGBTriple));
           Dst := pointer(longInt(DstScanLine) + Ditherer.Column);
+{$ELSE}
+          Src := pointer(PtrUInt(SrcScanLine) + Ditherer.Column*sizeof(TRGBTriple));
+          Dst := pointer(PtrUInt(DstScanLine) + Ditherer.Column);
+{$ENDIF}
 
           while (Ditherer.Column < Ditherer.Width) and (Ditherer.Column >= 0) do
           begin
diff --git a/components/thtmlport/package/htmlcons.inc b/components/thtmlport/package/htmlcons.inc
index be2310a02..739310610 100755
--- a/components/thtmlport/package/htmlcons.inc
+++ b/components/thtmlport/package/htmlcons.inc
@@ -32,6 +32,7 @@
   {$ifdef Win32}
     {$O-}  {optimization off}
   {$endif}
+  {$DEFINE CPU86}  // LCL port: Delphi currently only for Intel, 32-bit.
 {$endif}
 
 {$ELSE}  // LCL
diff --git a/components/thtmlport/package/htmlgif2.pas b/components/thtmlport/package/htmlgif2.pas
index 7e9abf6c7..d2be33302 100644
--- a/components/thtmlport/package/htmlgif2.pas
+++ b/components/thtmlport/package/htmlgif2.pas
@@ -260,7 +260,11 @@ end;
 constructor TgfFrame.CreateCopy(Item: TgfFrame);
 begin
 inherited Create;
+{$IFNDEF FPC}
 System.Move(Item.frLeft, frLeft, DWord(@TheEnd)-DWord(@frLeft));
+{$ELSE}
+System.Move(Item.frLeft, frLeft, PtrUInt(@TheEnd)-PtrUInt(@frLeft));
+{$ENDIF}
 IsCopy := True;
 end;
 
@@ -287,7 +291,11 @@ begin
 inherited Create;
 FImageWidth := Item.Width;
 FimageHeight := Item.Height;
+{$IFNDEF FPC}
 System.Move(Item.FAnimated, FAnimated, DWord(@TheEnd)-DWord(@FAnimated));
+{$ELSE}
+System.Move(Item.FAnimated, FAnimated, PtrUInt(@TheEnd)-PtrUInt(@FAnimated));
+{$ENDIF}
 IsCopy := True;
 
 Frames := TgfFrameList.Create;
diff --git a/components/thtmlport/package/htmlmisc.pas b/components/thtmlport/package/htmlmisc.pas
index b30ef69e4..f840c9746 100755
--- a/components/thtmlport/package/htmlmisc.pas
+++ b/components/thtmlport/package/htmlmisc.pas
@@ -464,6 +464,7 @@ procedure OutputDebugString(lpOutputString: PChar);
 function GlobalAlloc(uFlags: UINT; dwBytes: DWORD): HGLOBAL;
 function GlobalLock(hMem: HGLOBAL): Pointer;
 function GlobalUnlock(hMem: HGLOBAL): BOOL;
+function GlobalFree(hMem: HGLOBAL): HGLOBAL;
 function PostMessage(hWnd: HWND; Msg: UINT; wParam: WPARAM; lParam: LPARAM): BOOL;
 function SendMessage(hWnd: HWND; Msg: UINT; wParam: WPARAM; lParam: LPARAM): LRESULT;
 
@@ -499,7 +500,6 @@ function PatBlt(DC: HDC; X, Y, Width, Height: Integer; Rop: DWORD): BOOL;
 function SetTextJustification(DC: HDC; BreakExtra, BreakCount: Integer): Integer;
 function GetBrushOrgEx(DC: HDC; var lppt: TPoint): BOOL;
 function SetBrushOrgEx(DC: HDC; X, Y: Integer; PrevPt: PPoint): BOOL;
-function GlobalFree(hMem: HGLOBAL): HGLOBAL;
 function timeGetTime: DWORD;
 function GetTextExtentExPointW(DC: HDC; p2: PWideChar; p3, p4: Integer; 
                                p5, p6: PInteger; var p7: TSize): BOOL;
@@ -562,12 +562,11 @@ begin
 end;
 
 function GlobalAlloc(uFlags: UINT; dwBytes: DWORD): HGLOBAL;
-// Replace with calls to standard Clipboard methods?
 begin
 {$IFDEF MSWINDOWS}
   Result := Windows.GlobalAlloc(uFlags, dwBytes);
 {$ELSE}
-  Result := THandle(GetMem(dwBytes));
+  Result := HGLOBAL(GetMem(dwBytes));  {Treating pointer to memory as "handle"}
 {$ENDIF}
 end;
 
@@ -576,7 +575,7 @@ begin
 {$IFDEF MSWINDOWS}
   Result := Windows.GlobalLock(hMem);
 {$ELSE}
-  Result := PAnsiChar(hMem);
+  Result := Pointer(hMem);  {"Handle" is pointer to memory}
 {$ENDIF}
 end;
 
@@ -585,11 +584,20 @@ begin
 {$IFDEF MSWINDOWS}
   Result := Windows.GlobalUnlock(hMem);
 {$ELSE}
-  FreeMem(Pointer(hMem));
   Result := True;
 {$ENDIF}
 end;
 
+function GlobalFree(hMem: HGLOBAL): HGLOBAL;
+begin
+{$IFDEF MSWINDOWS}
+  Result := Windows.GlobalFree(hMem);
+{$ELSE}
+  FreeMem(Pointer(hMem));  {"Handle" is pointer to memory}
+  Result := 0;
+{$ENDIF}
+end;
+
 function PostMessage(hWnd: HWND; Msg: UINT; wParam: WPARAM; lParam: LPARAM): BOOL;
  {Use control's Perform method to force it to respond to posted message.
   This doesn't work:  Result := LclIntf.PostMessage(hWnd, Msg, wParam, lParam); }
@@ -1014,15 +1022,6 @@ begin
 {$ENDIF}
 end;
 
-function GlobalFree(hMem: HGLOBAL): HGLOBAL;
-begin
-{$IFDEF MSWINDOWS}
-  Result := Windows.GlobalFree(hMem);
-{$ELSE}
-  WriteLn('GlobalFree not implemented yet');
-{$ENDIF}
-end;
-
 function timeGetTime: DWORD;
 begin
   Result := GetTickCount;
diff --git a/components/thtmlport/package/htmlsbs1.pas b/components/thtmlport/package/htmlsbs1.pas
index 7d26ede0c..236576db3 100644
--- a/components/thtmlport/package/htmlsbs1.pas
+++ b/components/thtmlport/package/htmlsbs1.pas
@@ -260,7 +260,11 @@ end;
 constructor THorzLine.CreateCopy(AMasterList: TSectionList; T: TSectionBase);
 begin
 inherited Create(AMasterList);
+{$IFNDEF FPC}
 System.Move((T as THorzline).VSize, VSize, DWord(@BkGnd)-DWord(@VSize)+Sizeof(BkGnd));
+{$ELSE}
+System.Move((T as THorzline).VSize, VSize, PtrUInt(@BkGnd)-PtrUInt(@VSize)+Sizeof(BkGnd));
+{$ENDIF}
 end;
 
 procedure THorzLine.CopyToClipboard;
diff --git a/components/thtmlport/package/htmlsubs.pas b/components/thtmlport/package/htmlsubs.pas
index ceccc348a..047d1d44b 100755
--- a/components/thtmlport/package/htmlsubs.pas
+++ b/components/thtmlport/package/htmlsubs.pas
@@ -2916,7 +2916,11 @@ end;
 constructor TFormControlObj.CreateCopy(T: TFormControlObj);
 begin
 inherited Create;
+{$IFNDEF FPC}
 System.Move(T.Pos, Pos, DWord(@FControl)-DWord(@Pos));
+{$ELSE}
+System.Move(T.Pos, Pos, PtrUInt(@FControl)-PtrUInt(@Pos));
+{$ENDIF}
 end;
 
 destructor TFormControlObj.Destroy;
@@ -4236,7 +4240,11 @@ var
 begin
 inherited CreateCopy(AMasterList, T);
 TT := T as TBlock;
+{$IFNDEF FPC}
 System.Move(TT.MargArray, MargArray, DWord(@Converted)-DWord(@MargArray)+Sizeof(Converted));
+{$ELSE}
+System.Move(TT.MargArray, MargArray, PtrUInt(@Converted)-PtrUInt(@MargArray)+Sizeof(Converted));
+{$ENDIF}
 MyCell := TBlockCell.CreateCopy(AMasterList, TT.MyCell);
 MyCell.Owner := Self;   
 DrawList := TList.Create;
@@ -5531,7 +5539,11 @@ var
 begin
 inherited;
 TT := T as TTableBlock;
+{$IFNDEF FPC}
 System.Move(TT.WidthAttr, WidthAttr, DWord(@Justify)-DWord(@WidthAttr)+Sizeof(Justify));
+{$ELSE}
+System.Move(TT.WidthAttr, WidthAttr, PtrUInt(@Justify)-PtrUInt(@WidthAttr)+Sizeof(Justify));
+{$ENDIF}
 Item := MyCell.Items[0];
 Table := Item as ThtmlTable;
 end;
@@ -6104,7 +6116,11 @@ BitmapList := T.BitmapList;     {same list}
 InlineList := T.InlineList;     {same list}
 IsCopy := True;    
 inherited CreateCopy(Self, T);
+{$IFNDEF FPC}
 System.Move(T.ShowImages, ShowImages, DWord(@Background)-Dword(@ShowImages)+Sizeof(integer));
+{$ELSE}
+System.Move(T.ShowImages, ShowImages, PtrUInt(@Background)-PtrUInt(@ShowImages)+Sizeof(integer));
+{$ENDIF}
 BitmapName := '';
 BackgroundBitmap := Nil;
 BackgroundMask := Nil;
@@ -7129,7 +7145,11 @@ constructor TCellObj.CreateCopy(AMasterList: TSectionList; T: TCellObj);
 begin
 inherited create;
 Cell := TCellObjCell.CreateCopy(AMasterList, T.Cell);     
+{$IFNDEF FPC}
 Move(T.ColSpan, ColSpan, DWord(@Cell)-DWord(@ColSpan));
+{$ELSE}
+Move(T.ColSpan, ColSpan, PtrUInt(@Cell)-PtrUInt(@ColSpan));
+{$ENDIF}
 
 if AMasterList.PrintTableBackground then
   begin
@@ -7835,7 +7855,11 @@ for I := 0 to ThtmlTable(T).Rows.Count-1 do
   Rows.Add(TCellList.CreateCopy(AMasterList, TCellList(ThtmlTable(T).Rows.Items[I])));
 
 Move((T as ThtmlTable).ListsProcessed, ListsProcessed,
+{$IFNDEF FPC}
         DWord(@EndList)-DWord(@ListsProcessed));
+{$ELSE}
+        PtrUInt(@EndList)-PtrUInt(@ListsProcessed));
+{$ENDIF}
 
 SetLength(Widths, NumCols);
 SetLength(MaxWidths, NumCols);
diff --git a/components/thtmlport/package/htmlun2.pas b/components/thtmlport/package/htmlun2.pas
index a49290696..9848d60b8 100755
--- a/components/thtmlport/package/htmlun2.pas
+++ b/components/thtmlport/package/htmlun2.pas
@@ -498,7 +498,7 @@ type
 var
   DC: HDC; 
 
-{$IFNDEF CPUPOWERPC}
+{$IFDEF CPU86}
 {----------------StrLenW}
 function StrLenW(Str: PWideChar): Cardinal;
 {returns number of characters in a string excluding the null terminator}
@@ -818,7 +818,7 @@ else
   end;
 end;
 
-{$IFNDEF CPUPOWERPC}
+{$IFDEF CPU86}
 function IntMin(A, B: Integer): Integer;
 asm
   cmp edx, eax
@@ -3469,7 +3469,11 @@ begin
           end;
           Inc(x);
         end; // scan every sample byte of the image
+{$IFNDEF FPC}
         Inc(Integer(ScanLinePtr), ScanLineInc);
+{$ELSE}
+        Inc(ScanLinePtr, ScanLineInc);  // LCL port: removed cast for 64-bits.
+{$ENDIF}
       end;
       { need to call ExCreateRegion one more time because we could have left    }
       { a RgnData with less than 2000 rects, so it wasn't yet created/combined  }
diff --git a/components/thtmlport/package/readhtml.pas b/components/thtmlport/package/readhtml.pas
index 905efbe26..fdf4a60e0 100644
--- a/components/thtmlport/package/readhtml.pas
+++ b/components/thtmlport/package/readhtml.pas
@@ -327,7 +327,11 @@ case LoadStyle of
        end;
   else Result := #0;       {to prevent warning msg}
   end;
+{$IFNDEF FPC}
 if (Integer(Buff) and $FFF = 0)    {about every 4000 chars}   
+{$ELSE}
+if (PtrUInt(Buff) and $FFF = 0)    {about every 4000 chars}   
+{$ENDIF}
       and not LinkSearch and Assigned(MasterList) and (DocS <> '') then
   ThtmlViewer(CallingObject).htProgress(((Buff-PChar(DocS)) *MasterList.ProgressStart) div (BuffEnd-PChar(DocS)));
 end;