diff --git a/library/unistd_timer.c b/library/unistd_timer.c
new file mode 100644
index 0000000..c50aaa3
--- /dev/null
+++ b/library/unistd_timer.c
@@ -0,0 +1,146 @@
+/*
+ * $Id: unistd_timer.c,v 1.1 2004-09-29 14:21:34 obarthel Exp $
+ *
+ * :ts=4
+ *
+ * Portable ISO 'C' (1994) runtime library for the Amiga computer
+ * Copyright (c) 2002-2004 by Olaf Barthel <olsen@sourcery.han.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   - Neither the name of Olaf Barthel nor the names of contributors
+ *     may be used to endorse or promote products derived from this
+ *     software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _UNISTD_HEADERS_H
+#include "unistd_headers.h"
+#endif /* _UNISTD_HEADERS_H */
+
+#ifndef _STDLIB_HEADERS_H
+#include "stdlib_headers.h"
+#endif /* _STDLIB_HEADERS_H */
+
+/****************************************************************************/
+
+/* The following is not part of the ISO 'C' (1994) standard. */
+
+/****************************************************************************/
+
+/* Local timer I/O. */
+struct MsgPort *		__timer_port;
+struct timerequest *	__timer_request;
+BOOL					__timer_busy;
+struct Library *		__TimerBase;
+
+/****************************************************************************/
+
+#if defined(__amigaos4__)
+struct TimerIFace * __ITimer;
+#endif /* __amigaos4__ */
+
+/****************************************************************************/
+
+CLIB_CONSTRUCTOR(__timer_init)
+{
+	BOOL success = FALSE;
+
+	ENTER();
+
+	__timer_port = CreateMsgPort();
+	if(__timer_port == NULL)
+	{
+		__show_error("The timer message port could not be created.");
+		goto out;
+	}
+
+	__timer_request = (struct timerequest *)CreateIORequest(__timer_port,sizeof(*__timer_request));
+	if(__timer_request == NULL)
+	{
+		__show_error("The timer I/O request could not be created.");
+		goto out;
+	}
+
+	if(OpenDevice(TIMERNAME,UNIT_VBLANK,(struct IORequest *)__timer_request,0) != OK)
+	{
+		__show_error("The timer could not be opened.");
+		goto out;
+	}
+
+	__TimerBase = (struct Library *)__timer_request->tr_node.io_Device;
+
+	#if defined(__amigaos4__)
+	{
+		__ITimer = (struct TimerIFace *)GetInterface(__TimerBase, "main", 1, 0);
+		if(__ITimer == NULL)
+		{
+			__show_error("The timer interface could not be obtained.");
+			goto out;
+		}
+	}
+	#endif /* __amigaos4__ */
+
+	success = TRUE;
+
+ out:
+
+	RETURN(success);
+
+	if(success)
+		CONSTRUCTOR_SUCCEED();
+	else
+		CONSTRUCTOR_FAIL();
+}
+
+/****************************************************************************/
+
+CLIB_DESTRUCTOR(__timer_exit)
+{
+	ENTER();
+
+	#if defined(__amigaos4__)
+	{
+		if(__ITimer != NULL)
+			DropInterface((struct Interface *)__ITimer);
+
+		__ITimer = NULL;
+	}
+	#endif /* __amigaos4__ */
+
+	__TimerBase = NULL;
+
+	if(__timer_request != NULL)
+	{
+		if(__timer_request->tr_node.io_Device != NULL)
+			CloseDevice((struct IORequest *)__timer_request);
+
+		DeleteIORequest((struct IORequest *)__timer_request);
+		__timer_request = NULL;
+	}
+
+	if(__timer_port != NULL)
+	{
+		DeleteMsgPort(__timer_port);
+		__timer_port = NULL;
+	}
+
+	LEAVE();
+}