diff --git a/trunk/vreg_ctr.c b/trunk/vreg_ctr.c
index 5adc08f..10bd9d5 100644
--- a/trunk/vreg_ctr.c
+++ b/trunk/vreg_ctr.c
@@ -88,7 +88,7 @@ void vreg_ctr_write( u8 adrs, u8 data )
     {
 
     case ( VREG_C_MCU_STATUS ):
-        vreg_twl[ REG_TWL_INT_ADRS_MODE ] = (u8)( ( data >> 6 ) & 0x03 );
+//        vreg_twl[ REG_TWL_INT_ADRS_MODE ] = (u8)( ( data >> 6 ) & 0x03 );
         vreg_ctr[ VREG_C_MCU_STATUS ] = data;
         break;
 
@@ -304,6 +304,29 @@ void vreg_ctr_write( u8 adrs, u8 data )
         }
         vreg_ctr[ VREG_C_COMMAND3 ] = data;
         break;
+    
+    // read only
+    case ( VREG_C_MCU_VER_MAJOR ):
+    case ( VREG_C_MCU_VER_MINOR ):
+        //  VREG_C_TUNE = 0x08,
+        //  VREG_C_SND_VOL,
+        //  VREG_C_BT_TEMP,
+        //  VREG_C_BT_REMAIN,
+        //  VREG_C_BT_REMAIN_FINE,
+        //  VREG_C_BT_VOLTAGE,
+    case ( VREG_C_STATUS_1 ):
+    case ( VREG_C_STATUS ):
+    case ( VREG_C_IRQ0 ):
+    case ( VREG_C_IRQ1 ):
+    case ( VREG_C_IRQ2 ):
+    case ( VREG_C_IRQ3 ):
+    case ( VREG_C_IRQ4 ):
+    case ( VREG_C_LED_NOTIFY_FLAG ):
+    case ( VREG_C_RTC_SEC_FINE_L ):
+    case ( VREG_C_RTC_SEC_FINE_H ):
+        //  VREG_C_ACC_RESERVE,
+        //  VREG_C_ACC_HOSU_HIST = 0x4F,
+        break;
 
     default:
         /*
@@ -357,7 +380,7 @@ u8 vreg_ctr_read( u8 adrs )
     }
     else if( adrs == VREG_C_MCU_STATUS )
     {
-        return( vreg_ctr[ VREG_C_MCU_STATUS ] |
+        return( ( vreg_ctr[ VREG_C_MCU_STATUS ] & 0x03 ) |
             ( ( vreg_twl[ REG_TWL_INT_ADRS_MODE ] & 0x03 ) << 6 ) |  // sys_mode
             ( ( vreg_twl[ REG_TWL_INT_ADRS_MODE ] & 0x80 ) >> 2 ));   // vol32
     }