diff --git a/ChangeLog b/ChangeLog
index 92a11d2ee..0c96cf93c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2010-02-07 Holger Vogt
+ * inpcom.c: bug no. 2936702
+ * vngspice.sln, vngspice.vcproj: add 64 bit support
+
 2010-01-30 Dietmar Warning
  * b3soiddld.c, b3soifdld.c, cplload.c, cplsetup.c, inpcom.c, measure.c, 
    mystring.c, spicenum.c, txlsetup.c: using a controlled_exit to see error 
diff --git a/src/frontend/inpcom.c b/src/frontend/inpcom.c
index 73a2eb1bc..7daaa4049 100644
--- a/src/frontend/inpcom.c
+++ b/src/frontend/inpcom.c
@@ -915,7 +915,7 @@ inp_fix_ternary_operator_str( char *line )
   if ( *str_ptr == '(' ) {
     // find closing paren
     count    = 1;
-    str_ptr2 = str_ptr + 1;
+    str_ptr2 = str_ptr/* + 1*/;
     while ( count != 0 && *str_ptr2 != '\0' ) {
       str_ptr2++;
       if ( *str_ptr2 == '(' ) count++;
diff --git a/visualc/vngspice.sln b/visualc/vngspice.sln
index c17349737..cbe5b5c52 100644
--- a/visualc/vngspice.sln
+++ b/visualc/vngspice.sln
@@ -6,19 +6,37 @@ EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		console_debug|Win32 = console_debug|Win32
+		console_debug|x64 = console_debug|x64
 		console_release|Win32 = console_release|Win32
+		console_release|x64 = console_release|x64
 		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
 		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
+		release64|Win32 = release64|Win32
+		release64|x64 = release64|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.console_debug|Win32.ActiveCfg = console_debug|Win32
 		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.console_debug|Win32.Build.0 = console_debug|Win32
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.console_debug|x64.ActiveCfg = console_debug|x64
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.console_debug|x64.Build.0 = console_debug|x64
 		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.console_release|Win32.ActiveCfg = console_release|Win32
 		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.console_release|Win32.Build.0 = console_release|Win32
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.console_release|x64.ActiveCfg = console_release|x64
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.console_release|x64.Build.0 = console_release|x64
 		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Debug|Win32.ActiveCfg = Debug|Win32
 		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Debug|Win32.Build.0 = Debug|Win32
-		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Release|Win32.ActiveCfg = Release|Win32
-		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Release|Win32.Build.0 = Release|Win32
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Debug|x64.ActiveCfg = Debug|x64
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Debug|x64.Build.0 = Debug|x64
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Release|Win32.ActiveCfg = Debug|Win32
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Release|Win32.Build.0 = Debug|Win32
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Release|x64.ActiveCfg = Release|x64
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.Release|x64.Build.0 = Release|x64
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.release64|Win32.ActiveCfg = release64|Win32
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.release64|Win32.Build.0 = release64|Win32
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.release64|x64.ActiveCfg = release64|x64
+		{83E315C7-EDD3-4F6B-AF28-87A92A4FA49A}.release64|x64.Build.0 = release64|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/visualc/vngspice.vcproj b/visualc/vngspice.vcproj
index a34c660b4..2b86f77c1 100644
--- a/visualc/vngspice.vcproj
+++ b/visualc/vngspice.vcproj
@@ -12,6 +12,9 @@
 		<Platform
 			Name="Win32"
 		/>
+		<Platform
+			Name="x64"
+		/>
 	</Platforms>
 	<ToolFiles>
 	</ToolFiles>
@@ -382,6 +385,492 @@
 				Name="VCPostBuildEventTool"
 			/>
 		</Configuration>
+		<Configuration
+			Name="release64|Win32"
+			ConfigurationType="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Debug|x64"
+			OutputDirectory="$(PlatformName)\$(ConfigurationName)"
+			IntermediateDirectory="$(PlatformName)\$(ConfigurationName)"
+			ConfigurationType="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+				CommandLine=""
+				ExcludedFromBuild="false"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+				Description="Custom defined Build: Recompile conf.c with actual date"
+				CommandLine="del $(IntDir)\conf.obj&#x0D;&#x0A;"
+				Outputs="$(IntDir)\conf.obj"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				TargetEnvironment="3"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="&quot;$(ProjectDir)..\src\maths\poly&quot;;&quot;$(ProjectDir)..\src\frontend&quot;;&quot;$(ProjectDir)..\src\spicelib\devices&quot;;&quot;$(ProjectDir)..\src\include&quot;;&quot;$(ProjectDir)include&quot;"
+				PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE;SIMULATOR;NGDEBUG"
+				MinimalRebuild="true"
+				ExceptionHandling="0"
+				BasicRuntimeChecks="0"
+				RuntimeLibrary="1"
+				RuntimeTypeInfo="false"
+				UsePrecompiledHeader="0"
+				WarningLevel="4"
+				Detect64BitPortabilityProblems="false"
+				DebugInformationFormat="3"
+				CompileAs="1"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="psapi.lib"
+				OutputFile="$(OutDir)\bin\vngspice_d.exe"
+				LinkIncremental="1"
+				GenerateManifest="false"
+				GenerateDebugInformation="true"
+				SubSystem="2"
+				HeapReserveSize="0"
+				HeapCommitSize="0"
+				StackReserveSize="0"
+				StackCommitSize="0"
+				RandomizedBaseAddress="1"
+				DataExecutionPrevention="0"
+				TargetMachine="17"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|x64"
+			OutputDirectory="$(PlatformName)\$(ConfigurationName)"
+			IntermediateDirectory="$(PlatformName)\$(ConfigurationName)"
+			ConfigurationType="1"
+			WholeProgramOptimization="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+				Description="Custom defined Build: Recompile conf.c with actual date"
+				CommandLine="del $(IntDir)\conf.obj&#x0D;&#x0A;"
+				Outputs="$(IntDir)\conf.obj"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				TargetEnvironment="3"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				EnableIntrinsicFunctions="true"
+				FavorSizeOrSpeed="1"
+				WholeProgramOptimization="true"
+				AdditionalIncludeDirectories="&quot;$(ProjectDir)..\src\maths\poly&quot;;&quot;$(ProjectDir)..\src\frontend&quot;;&quot;$(ProjectDir)..\src\spicelib\devices&quot;;&quot;$(ProjectDir)..\src\include&quot;;&quot;$(ProjectDir)include&quot;"
+				PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE;SIMULATOR"
+				MinimalRebuild="false"
+				ExceptionHandling="1"
+				BasicRuntimeChecks="0"
+				RuntimeLibrary="0"
+				RuntimeTypeInfo="true"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="false"
+				DebugInformationFormat="3"
+				CompileAs="1"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				UseUnicodeResponseFiles="false"
+				AdditionalDependencies="psapi.lib"
+				OutputFile="$(OutDir)\bin\$(ProjectName).exe"
+				LinkIncremental="1"
+				GenerateDebugInformation="false"
+				SubSystem="2"
+				HeapReserveSize="0"
+				HeapCommitSize="0"
+				StackReserveSize="0"
+				StackCommitSize="0"
+				OptimizeReferences="2"
+				EnableCOMDATFolding="2"
+				LinkTimeCodeGeneration="1"
+				RandomizedBaseAddress="2"
+				DataExecutionPrevention="0"
+				TargetMachine="17"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="console_debug|x64"
+			OutputDirectory="$(PlatformName)\$(ConfigurationName)"
+			IntermediateDirectory="$(PlatformName)\$(ConfigurationName)"
+			ConfigurationType="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+				CommandLine=""
+				ExcludedFromBuild="false"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+				Description="Custom defined Build: Recompile conf.c with actual date"
+				CommandLine="del $(IntDir)\conf.obj&#x0D;&#x0A;"
+				Outputs="$(IntDir)\conf.obj"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				TargetEnvironment="3"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="&quot;$(ProjectDir)..\src\maths\poly&quot;;&quot;$(ProjectDir)..\src\frontend&quot;;&quot;$(ProjectDir)..\src\spicelib\devices&quot;;&quot;$(ProjectDir)..\src\include&quot;;&quot;$(ProjectDir)include&quot;"
+				PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE;SIMULATOR;NGDEBUG;CONSOLE"
+				MinimalRebuild="true"
+				ExceptionHandling="0"
+				BasicRuntimeChecks="0"
+				RuntimeLibrary="1"
+				RuntimeTypeInfo="false"
+				UsePrecompiledHeader="0"
+				WarningLevel="4"
+				Detect64BitPortabilityProblems="false"
+				DebugInformationFormat="3"
+				CompileAs="1"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="psapi.lib"
+				OutputFile="$(OutDir)\bin\vngspice_dc.exe"
+				LinkIncremental="1"
+				GenerateManifest="false"
+				GenerateDebugInformation="true"
+				SubSystem="1"
+				HeapReserveSize="0"
+				HeapCommitSize="0"
+				StackReserveSize="0"
+				StackCommitSize="0"
+				RandomizedBaseAddress="1"
+				DataExecutionPrevention="0"
+				TargetMachine="17"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="console_release|x64"
+			OutputDirectory="$(PlatformName)\$(ConfigurationName)"
+			IntermediateDirectory="$(PlatformName)\$(ConfigurationName)"
+			ConfigurationType="1"
+			WholeProgramOptimization="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+				Description="Custom defined Build: Recompile conf.c with actual date"
+				CommandLine="del $(IntDir)\conf.obj&#x0D;&#x0A;"
+				Outputs="$(IntDir)\conf.obj"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				TargetEnvironment="3"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				EnableIntrinsicFunctions="true"
+				FavorSizeOrSpeed="1"
+				WholeProgramOptimization="true"
+				AdditionalIncludeDirectories="&quot;$(ProjectDir)..\src\maths\poly&quot;;&quot;$(ProjectDir)..\src\frontend&quot;;&quot;$(ProjectDir)..\src\spicelib\devices&quot;;&quot;$(ProjectDir)..\src\include&quot;;&quot;$(ProjectDir)include&quot;"
+				PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE;SIMULATOR;CONSOLE"
+				MinimalRebuild="false"
+				ExceptionHandling="1"
+				BasicRuntimeChecks="0"
+				RuntimeLibrary="0"
+				RuntimeTypeInfo="true"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="false"
+				DebugInformationFormat="3"
+				CompileAs="1"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				UseUnicodeResponseFiles="false"
+				AdditionalDependencies="psapi.lib"
+				OutputFile="$(OutDir)\bin\$(ProjectName)c.exe"
+				LinkIncremental="1"
+				GenerateDebugInformation="false"
+				SubSystem="1"
+				HeapReserveSize="0"
+				HeapCommitSize="0"
+				StackReserveSize="0"
+				StackCommitSize="0"
+				OptimizeReferences="2"
+				EnableCOMDATFolding="2"
+				LinkTimeCodeGeneration="1"
+				RandomizedBaseAddress="2"
+				DataExecutionPrevention="0"
+				TargetMachine="17"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="release64|x64"
+			OutputDirectory="$(SolutionDir)$(PlatformName)\$(ConfigurationName)"
+			IntermediateDirectory="$(PlatformName)\$(ConfigurationName)"
+			ConfigurationType="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				TargetEnvironment="3"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				TargetMachine="17"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
 	</Configurations>
 	<References>
 	</References>
@@ -1300,11 +1789,11 @@
 				>
 			</File>
 			<File
-				RelativePath="..\src\include\grid.h"
+				RelativePath="..\src\frontend\plotting\grid.h"
 				>
 			</File>
 			<File
-				RelativePath="..\src\frontend\plotting\grid.h"
+				RelativePath="..\src\include\grid.h"
 				>
 			</File>
 			<File
@@ -1412,11 +1901,11 @@
 				>
 			</File>
 			<File
-				RelativePath="..\src\frontend\inp.h"
+				RelativePath="..\src\spicelib\parser\inp.h"
 				>
 			</File>
 			<File
-				RelativePath="..\src\spicelib\parser\inp.h"
+				RelativePath="..\src\frontend\inp.h"
 				>
 			</File>
 			<File