diff --git a/trunk/bootrom/build/libraries/os/common/os_interrupt.c b/trunk/bootrom/build/libraries/os/common/os_interrupt.c
index 7bd5184..fca774c 100644
--- a/trunk/bootrom/build/libraries/os/common/os_interrupt.c
+++ b/trunk/bootrom/build/libraries/os/common/os_interrupt.c
@@ -51,9 +51,13 @@ void osInitInterrupt( void )
         ((u32*)HW_INTR_VENEER_BUF)[1] = ((u32*)i_osIrqVeneer)[1];
 
 #ifdef SDK_ARM11
+        reg_OS_CPUI_CNT = 0;
+        reg_OS_IDR_CNT = 0;
+
         {
             u32 num = OS_INTR_ID_NUM;
             u32 conf = 0;
+            u32 ack;
             int i;
 
             for ( i=0; i<MATH_ROUNDUP(num, 32)/32; i++ )
@@ -75,11 +79,16 @@ void osInitInterrupt( void )
             {
                 reg_OS_IDR_CFG[i] = conf;
             }
+//            while ( (ack = (reg_OS_CPUI_ACK & REG_OS_CPUI_ACK_ID_MASK)) != REG_OS_CPUI_ACK_ID_MASK )
+            {
+//                reg_OS_CPUI_EOI = ack;
+            }
         }
         reg_OS_IDR_CNT = REG_OS_IDR_CNT_E_MASK;
 
         reg_OS_CPUI_PRIO = 15 << REG_OS_CPUI_PRIO_THLD_SHIFT;
         reg_OS_CPUI_BP = HW_CPUIBP_CMP_PRIO_ALL_BITS;
+        reg_OS_CPUI_EOI = reg_OS_CPUI_ACK & REG_OS_CPUI_ACK_ID_MASK;
         reg_OS_CPUI_CNT = REG_OS_CPUI_CNT_E_MASK;
 
 #else // SDK_ARM9