diff --git a/config.h.in b/config.h.in
index 6c12ac3..c8499c0 100644
--- a/config.h.in
+++ b/config.h.in
@@ -9,6 +9,9 @@
 /* Gpsim 0.21.4 was found */
 #undef GPSIM_0_21_4
 
+/* Gpsim 0.27.0 was found */
+#undef GPSIM_0_27_0
+
 /* Define to 1 if you have the <Carbon/Carbon.h> header file. */
 #undef HAVE_CARBON_CARBON_H
 
diff --git a/configure.in b/configure.in
index 8e0d9ba..7792976 100644
--- a/configure.in
+++ b/configure.in
@@ -131,6 +131,18 @@ AC_TRY_COMPILE(
 	AC_MSG_RESULT( no )
 )
 
+AC_MSG_CHECKING([for gpsim 0.27.0 availability])
+AC_TRY_COMPILE(
+	[
+#include <gpsim/pic-processor.h>
+void func() { pic_processor *Processor; sizeof(Processor->Wreg); }
+	],
+	[],
+	AC_MSG_RESULT( yes )
+	have_gpsim_0_27_0=yes,
+	AC_MSG_RESULT( no )
+)
+
 CXXFLAGS="$ktechlab_save_CXXFLAGS"
 AC_LANG_RESTORE
 
@@ -199,6 +211,10 @@ if test x$have_gpsim_0_21_4 == xyes || test x$have_gpsim_0_21_11 == xyes || test
 	LIBS="$ac_save_LIBS"
 fi
 
+if test x$have_gpsim_0_27_0 == xyes; then
+	AC_DEFINE([GPSIM_0_27_0],[],[Gpsim 0.27.0 was found])
+fi
+
 AC_SUBST(LIB_GPSIM)
 
 ##############################
diff --git a/configure.in.in b/configure.in.in
index 434d2c6..e1fdd88 100644
--- a/configure.in.in
+++ b/configure.in.in
@@ -68,6 +68,18 @@ AC_TRY_COMPILE(
 	AC_MSG_RESULT( no )
 )
 
+AC_MSG_CHECKING([for gpsim 0.27.0 availability])
+AC_TRY_COMPILE(
+	[
+#include <gpsim/pic-processor.h>
+void func() { pic_processor *Processor; sizeof(Processor->Wreg); }
+	],
+	[],
+	AC_MSG_RESULT( yes )
+	have_gpsim_0_27_0=yes,
+	AC_MSG_RESULT( no )
+)
+
 CXXFLAGS="$ktechlab_save_CXXFLAGS"
 AC_LANG_RESTORE
 
@@ -136,6 +148,10 @@ if test x$have_gpsim_0_21_4 == xyes || test x$have_gpsim_0_21_11 == xyes || test
 	LIBS="$ac_save_LIBS"
 fi
 
+if test x$have_gpsim_0_27_0 == xyes; then
+	AC_DEFINE([GPSIM_0_27_0],[],[Gpsim 0.27.0 was found])
+fi
+
 AC_SUBST(LIB_GPSIM)
 
 ##############################
diff --git a/src/electronics/gpsimprocessor.cpp b/src/electronics/gpsimprocessor.cpp
index 587fc6f..c5ad638 100644
--- a/src/electronics/gpsimprocessor.cpp
+++ b/src/electronics/gpsimprocessor.cpp
@@ -736,7 +736,13 @@ RegisterSet::RegisterSet( pic_processor * picProcessor )
 		m_nameToRegisterMap[ info->name() ] = info;
 	}
 	
-	RegisterInfo * info = new RegisterInfo( picProcessor->W );
+	RegisterInfo * info = new RegisterInfo(
+#ifdef GPSIM_0_27_0
+		picProcessor->Wreg
+#else
+		picProcessor->W
+#endif
+		);
 	m_registers.append( info );
 	m_nameToRegisterMap[ info->name() ] = info;
 }