diff --git a/build/libraries/init/ARM7/crt0_firm.c b/build/libraries/init/ARM7/crt0_firm.c
index 622fe8c9..156a1b81 100644
--- a/build/libraries/init/ARM7/crt0_firm.c
+++ b/build/libraries/init/ARM7/crt0_firm.c
@@ -97,6 +97,14 @@ SDK_WEAK_SYMBOL asm void _start( void )
         bmi             @1_2
 #endif
 
+        //---- wait for main memory mode into burst mode
+        ldr             r3, =REG_EXMEMCNT_L_ADDR
+        mov             r1, #REG_MI_EXMEMCNT_L_ECE2_MASK
+@1:
+        ldrh            r2, [r3]
+        tst             r2, r1
+        beq             @1
+
         //---- load autoload block and initialize bss
         bl              do_autoload
 
diff --git a/build/libraries/mi/ARM9/mi_init_mainMemory.c b/build/libraries/mi/ARM9/mi_init_mainMemory.c
index 773aa2b3..18af56ee 100644
--- a/build/libraries/mi/ARM9/mi_init_mainMemory.c
+++ b/build/libraries/mi/ARM9/mi_init_mainMemory.c
@@ -15,7 +15,38 @@
   $Author$
  *---------------------------------------------------------------------------*/
 #include        <firm/mi.h>
-#include        <nitro/code32.h>
+
+
+/*---------------------------------------------------------------------------*
+  Name:         MIi_IsMainMemoryInitialized
+
+  Description:
+
+  Arguments:    None
+
+  Returns:      None
+ *---------------------------------------------------------------------------*/
+BOOL MIi_IsMainMemoryInitialized( void )
+{
+    return  (BOOL)((reg_MI_EXMEMCNT & REG_MI_EXMEMCNT_CE2_MASK) >> REG_MI_EXMEMCNT_CE2_SHIFT);
+}
+
+/*---------------------------------------------------------------------------*
+  Name:         MIi_WaitMainMemoryInitialize
+
+  Description:
+
+  Arguments:    None
+
+  Returns:      None
+ *---------------------------------------------------------------------------*/
+void MIi_WaitMainMemoryInitialize( void )
+{
+    while( MIi_IsMainMemoryInitialized() == FALSE )
+    {
+    }
+}
+
 
 /*---------------------------------------------------------------------------*
   Name:         MIi_InitMainMemCR
@@ -26,6 +57,8 @@
 
   Returns:      None
  *---------------------------------------------------------------------------*/
+#include        <nitro/code32.h>
+
 asm void  MIi_InitMainMemCR( void )
 {
         mov     r12, lr
diff --git a/include/firm/mi/mainMemory.h b/include/firm/mi/mainMemory.h
index 87701bca..9c4886f9 100644
--- a/include/firm/mi/mainMemory.h
+++ b/include/firm/mi/mainMemory.h
@@ -71,6 +71,27 @@ extern "C" {
  *---------------------------------------------------------------------------*/
 void  MIi_InitMainMemCR( void );
 
+/*---------------------------------------------------------------------------*
+  Name:         MIi_IsMainMemoryInitialized
+
+  Description:
+
+  Arguments:    None
+
+  Returns:      None
+ *---------------------------------------------------------------------------*/
+BOOL MIi_IsMainMemoryInitialized( void );
+
+/*---------------------------------------------------------------------------*
+  Name:         MIi_WaitMainMemoryInitialize
+
+  Description:
+
+  Arguments:    None
+
+  Returns:      None
+ *---------------------------------------------------------------------------*/
+void MIi_WaitMainMemoryInitialize( void );
 
 #ifdef __cplusplus
 } /* extern "C" */