diff --git a/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker.ncb b/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker.ncb
index f56299d..da64d30 100644
Binary files a/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker.ncb and b/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker.ncb differ
diff --git a/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker.suo b/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker.suo
index a296c41..f367591 100644
Binary files a/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker.suo and b/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker.suo differ
diff --git a/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker/Debug/BuildLog.htm b/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker/Debug/BuildLog.htm
index 0e04e96..77e74cf 100644
Binary files a/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker/Debug/BuildLog.htm and b/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker/Debug/BuildLog.htm differ
diff --git a/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker/check_rom.cpp b/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker/check_rom.cpp
index 5d21cf2..63ff894 100644
--- a/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker/check_rom.cpp
+++ b/build/tools/MasterEditor/MasterEditorTWLChecker/MasterEditorTWLChecker/check_rom.cpp
@@ -1,6 +1,179 @@
 #include "stdafx.h"
+#include "check.h"
+#include <common.h>
+#include <utility.h>
+#include <twl/types.h>
+#include <twl/os/common/format_rom.h>
+#include <twl/os/common/ownerInfoEx.h>
+#include <cstring>
+#include <cstdio>
+
+//
+// ファイル名の文字列とリージョン/レーティングの値の対応づけ
+//
+
+u32 getRegionBitmap( System::String ^region )
+{
+	u32  bitmap = 0;
+	if( region == "JP" )
+	{
+		bitmap = METWL_MASK_REGION_JAPAN;
+	}
+	else if( region == "US" )
+	{
+		bitmap = METWL_MASK_REGION_AMERICA;
+	}
+	else if( region == "EU" )
+	{
+		bitmap = METWL_MASK_REGION_EUROPE;
+	}
+	else if( region == "AU" )
+	{
+		bitmap = METWL_MASK_REGION_AUSTRALIA;
+	}
+	else if( region == "EUAU" )
+	{
+		bitmap = (METWL_MASK_REGION_EUROPE | METWL_MASK_REGION_AUSTRALIA);
+	}
+	else if( region == "USAU" )
+	{
+		bitmap = (METWL_MASK_REGION_AMERICA | METWL_MASK_REGION_AUSTRALIA);
+	}
+	else if( region == "USEUAU" )
+	{
+		bitmap = (METWL_MASK_REGION_AMERICA | METWL_MASK_REGION_EUROPE | METWL_MASK_REGION_AUSTRALIA);
+	}
+	else if( region == "CN" )
+	{
+		bitmap = (METWL_MASK_REGION_CHINA);
+	}
+	else if( region == "KR" )
+	{
+		bitmap = (METWL_MASK_REGION_KOREA);
+	}
+	else if( region == "ALL" )
+	{
+		bitmap = METWL_MASK_REGION_ALL;
+	}
+	return bitmap;
+}
+
+int getOgnNumber( System::String ^ogn )
+{
+	int num = -1;
+	if( ogn == "CERO" )
+	{
+		num = OS_TWL_PCTL_OGN_CERO;
+	}
+	if( ogn == "ESRB" )
+	{
+		num = OS_TWL_PCTL_OGN_ESRB;
+	}
+	if( ogn == "USK" )
+	{
+		num = OS_TWL_PCTL_OGN_USK;
+	}
+	if( ogn == "PEGI_GEN" )
+	{
+		num = OS_TWL_PCTL_OGN_PEGI_GEN;
+	}
+	if( ogn == "PEGI_PRT" )
+	{
+		num = OS_TWL_PCTL_OGN_PEGI_PRT;
+	}
+	if( ogn == "PEGI_BBFC" )
+	{
+		num = OS_TWL_PCTL_OGN_PEGI_BBFC;
+	}
+	if( ogn == "OFLC" )
+	{
+		num = OS_TWL_PCTL_OGN_OFLC;
+	}
+	if( ogn == "GRB" )
+	{
+		num = OS_TWL_PCTL_OGN_GRB;
+	}
+	return num;
+}
+
+u8 getRatingValue( System::String ^rating )
+{
+	u8 val = 0;
+	if( rating == "RP" )
+	{
+		val = OS_TWL_PCTL_OGNINFO_ENABLE_MASK | OS_TWL_PCTL_OGNINFO_ALWAYS_MASK;
+	}
+	else
+	{
+		val = OS_TWL_PCTL_OGNINFO_ENABLE_MASK | (System::Byte::Parse(rating));
+	}
+	return val;
+}
 
 //
 // 出力SRLのチェック
 //
+System::Void checkRom( FilenameItem ^fItem, System::String ^srlpath )
+{
+	const char *chpath = 
+		(const char*)System::Runtime::InteropServices::Marshal::StringToHGlobalAnsi( srlpath ).ToPointer();
 
+	// ROMヘッダの読み込み
+	ROM_Header rh;
+	FILE       *fp = NULL;
+	if( fopen_s( &fp, chpath, "rb" ) != NULL )
+	{
+		throw (gcnew System::Exception("Fail to Open SRL File."));
+		return;
+	}
+	// 1バイトをsizeof(~)だけリード (逆だと返り値がsizeof(~)にならないので注意)
+	(void)fseek( fp, 0, SEEK_SET );		// ROMヘッダはsrlの先頭から
+	if( fread( (void*)&rh, 1, sizeof(ROM_Header), fp ) != sizeof(ROM_Header) )
+	{
+		throw (gcnew System::Exception("Fail to Read ROM Header."));
+		fclose(fp);
+		return;
+	}
+	fclose(fp);
+
+	// リージョンのチェック
+	u32 region = getRegionBitmap( fItem->region );
+	if( rh.s.card_region_bitmap != region )
+	{
+		throw (gcnew System::Exception("Illegal Region in ROM Header."));
+		return;
+	}
+
+	// リージョンに含まれる団体のレーティングenableフラグが立っているかチェック
+	System::Collections::Generic::List<int> ^ognlist = MasterEditorTWL::getOgnListInRegion( region );
+	for each ( int ogn in ognlist )
+	{
+		if( (rh.s.parental_control_rating_info[ogn] & OS_TWL_PCTL_OGNINFO_ENABLE_MASK) == 0 )
+		{
+			throw (gcnew System::Exception("Rating Ogn " + ogn.ToString() + " is not Enabled."));
+			return;
+		}
+	}
+
+	// 設定したレーティングが正しいかどうかをチェック
+	int ogn = getOgnNumber( fItem->ogn );			// ファイル名から団体とレーティング値の真値を決定
+	u8  rating = getRatingValue( fItem->rating );
+	if( rh.s.parental_control_rating_info[ ogn ] != rating )
+	{
+		throw (gcnew System::Exception("Mismatch Rating Ogn " + ogn.ToString() + ". "
+										+ "filename = " + rating.ToString("2X")
+										+ "srl = " + rh.s.parental_control_rating_info[ ogn ].ToString("2X") + "."));
+		return;
+	}
+
+	// リージョンに含まれない団体のレーティングがクリアされているかチェック
+	int i;
+	for( i=0; i < PARENTAL_CONTROL_INFO_SIZE; i++ )
+	{
+		if( (ognlist->IndexOf(i) < 0) && (rh.s.parental_control_rating_info[i] != 0) )
+		{
+			throw (gcnew System::Exception("Rating Ogn " + i.ToString() + " is not Cleared in ROM Header."));
+			return;
+		}
+	}
+}