diff --git a/lib/CPUs/MIPS/bsp/examples/irq.c b/lib/CPUs/MIPS/bsp/examples/irq.c
index bcd8d98..85e1320 100644
--- a/lib/CPUs/MIPS/bsp/examples/irq.c
+++ b/lib/CPUs/MIPS/bsp/examples/irq.c
@@ -12,9 +12,10 @@ static fp_irq_t g_irq_handler[MAX_NUM_IRQ] = {NULL};
 
 int _irq_dispatch(struct xcptcontext * xcp)
 {
-	int i, ip;
+	int i, ip, cause;
 
-	ip =  (xcp->cr >> 8) & 0xFF;
+	cause = xcp->cr & xcp->sr;
+	ip =  (cause >> 8) & 0xFF;
 
 	for (i=0; i < MAX_NUM_IRQ; i++)
 	{