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diff --git a/bertos/cpu/cortex-m3/drv/irq.c b/bertos/cpu/cortex-m3/drv/irq.c
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+++ b/bertos/cpu/cortex-m3/drv/irq.c
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+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief Cortex-M3 IRQ management.
+ *
+ * \author Andrea Righi <arighi@develer.com>
+ */
+
+#include <cfg/debug.h>
+#include <cpu/irq.h>
+#include "io/lm3s.h"
+#include "irq.h"
+
+static void (*irq_table[NUM_INTERRUPTS])(void)
+			__attribute__((section("vtable")));
+
+static void unhandled_isr(void)
+{
+	/* Unhandled IRQ */
+	ASSERT(0);
+}
+
+void sysirq_setHandler(sysirq_t irq, sysirq_handler_t handler)
+{
+	cpu_flags_t flags;
+
+	ASSERT(irq < NUM_INTERRUPTS);
+
+	IRQ_SAVE_DISABLE(flags);
+	irq_table[irq] = handler;
+	IRQ_RESTORE(flags);
+}
+
+void sysirq_freeHandler(sysirq_t irq)
+{
+	cpu_flags_t flags;
+
+	ASSERT(irq < NUM_INTERRUPTS);
+
+	IRQ_SAVE_DISABLE(flags);
+	irq_table[irq] = unhandled_isr;
+	IRQ_RESTORE(flags);
+}
+
+void sysirq_init(void)
+{
+	cpu_flags_t flags;
+	int i;
+
+	IRQ_SAVE_DISABLE(flags);
+	for (i = 0; i < NUM_INTERRUPTS; i++)
+		irq_table[i] = unhandled_isr;
+
+	/* Update NVIC to point to the new vector table */
+	HWREG(NVIC_VTABLE) = (size_t)irq_table;
+	IRQ_RESTORE(flags);
+}