diff --git a/build/systemMenu_tools/common/ARM9/include/debugger_card_rom.h b/build/systemMenu_tools/common/ARM9/include/debugger_card_rom.h
new file mode 100644
index 00000000..6475db43
--- /dev/null
+++ b/build/systemMenu_tools/common/ARM9/include/debugger_card_rom.h
@@ -0,0 +1,50 @@
+/*---------------------------------------------------------------------------*
+  Project:  TwlSDK - NandInitializer
+  File:     debugger_card_rom.h
+
+  Copyright 2008 Nintendo.  All rights reserved.
+
+  These coded instructions, statements, and computer programs contain
+  proprietary information of Nintendo of America Inc. and/or Nintendo
+  Company Ltd., and are protected by Federal copyright law.  They may
+  not be disclosed to third parties or copied or duplicated in any form,
+  in whole or in part, without the prior written consent of Nintendo.
+
+  $Date::            $
+  $Rev$
+  $Author$
+ *---------------------------------------------------------------------------*/
+#ifndef DEBUGGER_HW_CARD_ROM_H_
+#define DEBUGGER_HW_CARD_ROM_H_
+
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#define DEBUGGER_COMMAND_LOOK_SCREEN   0x00000001
+#define DEBUGGER_COMMAND_ALREADY       0x00000002
+#define DEBUGGER_COMMAND_NOW_UPDATE    0x00000003
+#define DEBUGGER_COMMAND_CANCELED      0x00000004
+#define DEBUGGER_COMMAND_FINISHED      0x00000005
+
+/*---------------------------------------------------------------------------*
+  Name:         CARDi_ReadRomIDCoreEx
+
+  Description:  カード ID の読み出し。
+
+  Arguments:    dontCare : gRD_IDの don't care ビットにセットする値
+
+  Returns:      カード ID
+ *---------------------------------------------------------------------------*/
+u32 CARDi_ReadRomIDCoreEx(u32 dontCare);
+
+#ifdef  __cplusplus
+}          /* extern "C" */
+#endif
+
+#endif /* DEBUGGER_HW_CARD_ROM_H_ */
+
+/*---------------------------------------------------------------------------*
+  End of file
+ *---------------------------------------------------------------------------*/
diff --git a/build/systemMenu_tools/common/ARM9/src/debugger_card_rom.c b/build/systemMenu_tools/common/ARM9/src/debugger_card_rom.c
new file mode 100644
index 00000000..f129cd6f
--- /dev/null
+++ b/build/systemMenu_tools/common/ARM9/src/debugger_card_rom.c
@@ -0,0 +1,92 @@
+/*---------------------------------------------------------------------------*
+  Project:  SystemUpdater
+  File:     debugger_card_rom.c
+
+  Copyright 2008 Nintendo.  All rights reserved.
+
+  These coded instructions, statements, and computer programs contain
+  proprietary information of Nintendo of America Inc. and/or Nintendo
+  Company Ltd., and are protected by Federal copyright law.  They may
+  not be disclosed to third parties or copied or duplicated in any form,
+  in whole or in part, without the prior written consent of Nintendo.
+
+  $Date::            $
+  $Rev$
+  $Author$
+
+ *---------------------------------------------------------------------------*/
+
+#include "debugger_card_rom.h"
+
+/*---------------------------------------------------------------------------*/
+/* constants */
+
+#define CARD_COMMAND_ID             0x07000000
+#define CARD_COMMAND_MASK           0x07000000
+#define CARD_RESET_HI               0x20000000
+#define CARD_COMMAND_OP_G_READID    0xB8
+
+/*---------------------------------------------------------------------------*
+  Name:         CARDi_GetRomFlag
+
+  Description:  カードコマンドコントロールパラメータを取得
+
+  Arguments:    flag       カードデバイスへ発行するコマンドのタイプ
+                           (CARD_COMMAND_PAGE / CARD_COMMAND_ID /
+                            CARD_COMMAND_STAT / CARD_COMMAND_REFRESH)
+
+  Returns:      カードコマンドコントロールパラメータ
+ *---------------------------------------------------------------------------*/
+SDK_INLINE u32 CARDi_GetRomFlag(u32 flag)
+{
+    u32     rom_ctrl = *(vu32 *)(HW_CARD_ROM_HEADER + 0x60);
+    return (u32)(flag | REG_MI_MCCNT1_START_MASK | CARD_RESET_HI | (rom_ctrl & ~CARD_COMMAND_MASK));
+}
+
+/*---------------------------------------------------------------------------*
+  Name:         CARDi_SetRomOp
+
+  Description:  カードコマンド設定
+
+  Arguments:    command    コマンド
+                offset     転送ページ数
+
+  Returns:      None.
+ *---------------------------------------------------------------------------*/
+static void CARDi_SetRomOp(u32 command, u32 offset)
+{
+    u32     cmd1 = (u32)((offset >> 8) | (command << 24));
+    u32     cmd2 = (u32)((offset << 24));
+    // 念のため前回のROMコマンドの完了待ち。
+    while ((reg_MI_MCCNT1 & REG_MI_MCCNT1_START_MASK) != 0)
+    {
+    }
+    // マスターイネーブル。
+    reg_MI_MCCNT0 = (u16)(REG_MI_MCCNT0_E_MASK | REG_MI_MCCNT0_I_MASK |
+                          (reg_MI_MCCNT0 & ~REG_MI_MCCNT0_SEL_MASK));
+    // コマンド設定。
+    reg_MI_MCCMD0 = MI_HToBE32(cmd1);
+    reg_MI_MCCMD1 = MI_HToBE32(cmd2);
+}
+
+/*---------------------------------------------------------------------------*
+  Name:         CARDi_ReadRomIDCoreEx
+
+  Description:  カード ID の読み出し。
+
+  Arguments:    dontCare : gRD_IDの don't care ビットにセットする値
+
+  Returns:      カード ID
+ *---------------------------------------------------------------------------*/
+u32 CARDi_ReadRomIDCoreEx(u32 dontCare)
+{
+    u8 op = CARD_COMMAND_OP_G_READID;
+
+    CARDi_SetRomOp(op, dontCare);
+    reg_MI_MCCNT1 = (u32)(CARDi_GetRomFlag(CARD_COMMAND_ID) & ~REG_MI_MCCNT1_L1_MASK);
+    while ((reg_MI_MCCNT1 & REG_MI_MCCNT1_RDY_MASK) == 0)
+    {
+    }
+    return reg_MI_MCD1;
+}
+