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diff --git a/c/src/lib/libbsp/i386/pc386/timer/timerisr.S b/c/src/lib/libbsp/i386/pc386/timer/timerisr.S
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+/*-------------------------------------------------------------------------+
+| timerisr.s v1.1 - PC386 BSP - 1997/08/07
++--------------------------------------------------------------------------+
+| This file contains the PC386 timer interrupt handler.
++--------------------------------------------------------------------------+
+| (C) Copyright 1997 -
+| - NavIST Group - Real-Time Distributed Systems and Industrial Automation
+|
+| http://pandora.ist.utl.pt
+|
+| Instituto Superior Tecnico * Lisboa * PORTUGAL
++--------------------------------------------------------------------------+
+| Disclaimer:
+|
+| This file is provided "AS IS" without warranty of any kind, either
+| expressed or implied.
++--------------------------------------------------------------------------+
+| This code is base on:
+| timerisr.s,v 1.5 1995/12/19 20:07:45 joel Exp - go32 BSP
+| With the following copyright notice:
+| **************************************************************************
+| * COPYRIGHT (c) 1989-1998.
+| * On-Line Applications Research Corporation (OAR).
+| * Copyright assigned to U.S. Government, 1994.
+| *
+| * The license and distribution terms for this file may be
+| * found in found in the file LICENSE in this distribution or at
+| * http://www.OARcorp.com/rtems/license.html.
+| **************************************************************************
+|
+| $Id$
++--------------------------------------------------------------------------*/
+
+
+#include "asm.h"
+
+BEGIN_CODE
+
+ EXTERN(Ttimer_val)
+
+/*-------------------------------------------------------------------------+
+| Function: rtems_isr timerisr(rtems_vector_number);
+| Description: ISR for the timer. The timer is set up to generate an
+| interrupt at maximum intervals.
+| Global Variables: None.
+| Arguments: standard - see RTEMS documentation.
+| Returns: standard return value - see RTEMS documentation.
++--------------------------------------------------------------------------*/
+ PUBLIC(timerisr)
+SYM (timerisr):
+ incl Ttimer_val # another tick
+ pushl eax
+ movb $0x20, al
+ outb al, $0x20 # signal generic End Of Interrupt (EOI) to PIC
+ popl eax
+ iret
+
+END_CODE
+
+END
+