diff --git a/src/spicelib/devices/adms/admst/ngspiceMODULE.hxx.xml b/src/spicelib/devices/adms/admst/ngspiceMODULE.hxx.xml
index cb7443102..dee57be57 100644
--- a/src/spicelib/devices/adms/admst/ngspiceMODULE.hxx.xml
+++ b/src/spicelib/devices/adms/admst/ngspiceMODULE.hxx.xml
@@ -1880,6 +1880,10 @@ inline double _d1_pow(double x,double y)   { return (x==0.0)?0.0:((log(x)/exp(0.
       <admst:variable name="xpq" select="$epq"/>
       <admst:variable name="e" select="_DDT($x)"/>
     </admst:when>
+    <admst:when test="[name='\$port_connected']">
+      <admst:assert test="arguments[1]/[datatypename='node']" format="%(name): argument is not a node\n"/>
+      <admst:variable name="e" select="(here->%(arguments[1])Node_connected /* port_connected 12 */)"/>
+    </admst:when>
     <admst:when test="[name='\$given' or name='\$param_given']">
       <admst:variable name="arg1" select="%(arguments[1])"/>
       <admst:assert test="$arg1/[datatypename='variable' and input='yes']" format="%(name): argument is not a parameter\n"/>
@@ -2019,6 +2023,8 @@ inline double _d1_pow(double x,double y)   { return (x==0.0)?0.0:((log(x)/exp(0.
     </admst:when>
     <admst:when test="[name='\$given' or name='\$param_given']">
     </admst:when>
+    <admst:when test="[name='\$port_connected']">
+    </admst:when>
     <admst:when test="[name='\$temperature']">
     </admst:when>
     <admst:when test="[name='\$mfactor']">
@@ -2090,6 +2096,8 @@ inline double _d1_pow(double x,double y)   { return (x==0.0)?0.0:((log(x)/exp(0.
     </admst:when>
     <admst:when test="[name='\$given' or name='\$param_given']">
     </admst:when>
+    <admst:when test="[name='\$port_connected']">
+    </admst:when>
     <admst:when test="[name='\$temperature']">
     </admst:when>
     <admst:when test="[name='\$mfactor']">
diff --git a/src/spicelib/devices/adms/admst/ngspiceMODULEdefs.h.xml b/src/spicelib/devices/adms/admst/ngspiceMODULEdefs.h.xml
index 0ff1fb8d0..1c4a21e30 100644
--- a/src/spicelib/devices/adms/admst/ngspiceMODULEdefs.h.xml
+++ b/src/spicelib/devices/adms/admst/ngspiceMODULEdefs.h.xml
@@ -195,6 +195,9 @@ typedef struct s$(module)instance {
     <admst:text format="  /*%s*/"/>
   </admst:if>
   <admst:text format="\n"/>
+</admst:for-each>
+<admst:for-each select="node[grounded='no']">
+  <admst:text format="  unsigned %(name)Node_connected :1;\n"/>
 </admst:for-each>
   /* instance parameters */
 <admst:for-each select="variable[parametertype='instance' and input='yes']">
diff --git a/src/spicelib/devices/adms/admst/ngspiceMODULEguesstopology.c.xml b/src/spicelib/devices/adms/admst/ngspiceMODULEguesstopology.c.xml
index aec807554..765bb84c4 100644
--- a/src/spicelib/devices/adms/admst/ngspiceMODULEguesstopology.c.xml
+++ b/src/spicelib/devices/adms/admst/ngspiceMODULEguesstopology.c.xml
@@ -42,6 +42,14 @@
 </admst:template>
 
 <admst:template match="function">
+  <admst:choose>
+    <admst:when test="[name='\$port_connected']">
+      <admst:message format="ZZ 11!! port_connecte, this one\n"/>
+      <admst:for-each select="arguments[position(.)=1]">
+        <admst:value-to select="/simulator/tmp" value="(here->%(.)Node_connected /* port_connected 13 */)"/>
+      </admst:for-each>
+    </admst:when>
+    <admst:otherwise>
   <admst:variable name="function" select="%(name)"/>
   <admst:variable name="args" select=""/>
   <admst:for-each select="arguments">
@@ -105,6 +113,8 @@
       <admst:value-to select="/simulator/tmp" value="$mycode"/>
     </admst:otherwise>
   </admst:choose>
+    </admst:otherwise>
+  </admst:choose>
 </admst:template>
 
 <admst:template match="evaluatetopology">
diff --git a/src/spicelib/devices/adms/admst/ngspiceMODULEsetup.c.xml b/src/spicelib/devices/adms/admst/ngspiceMODULEsetup.c.xml
index 768084c9e..a8c57cf0a 100644
--- a/src/spicelib/devices/adms/admst/ngspiceMODULEsetup.c.xml
+++ b/src/spicelib/devices/adms/admst/ngspiceMODULEsetup.c.xml
@@ -98,6 +98,10 @@ int $(module)setup (SMPmatrix *matrix, GENmodel *inModel, CKTcircuit *ckt, int *
 <admst:if test="default[not(nilled(function[class='builtin']))]">
   <admst:text format="}\n"/>
 </admst:if>
+</admst:for-each>
+      /* External Nodes, connected ? */
+<admst:for-each select="node[location='external']">
+      here->%(name)Node_connected = (here->%(name)Node &gt;= 0);
 </admst:for-each>
 <admst:if test="node[location='internal']">
       /* Internal Nodes */
@@ -180,13 +184,16 @@ $(module)unsetup(GENmodel *inModel, CKTcircuit *ckt)
   {
     for ( here = model->$(module)instances ;here != NULL ; here = here->$(module)nextInstance )
     {
+<admst:for-each select="node[location='external']">
+        if (!here->%(name)Node_connected && here->%(name)Node >= 0) {
+            CKTdltNNum(ckt, here->%(name)Node);
+            here->%(name)Node = -1;
+        }
+</admst:for-each>
 <admst:for-each select="reverse(node[location='internal'])">
-<admst:value-of select="name"/>
-<admst:value-of select="name"/>
-<admst:value-of select="name"/>
-        if (here->%sNode > 0) {
-            CKTdltNNum(ckt, here->%sNode);
-            here->%sNode = -1;
+        if (here->%(name)Node > 0) {
+            CKTdltNNum(ckt, here->%(name)Node);
+            here->%(name)Node = -1;
         }
 </admst:for-each>
     }
diff --git a/src/spicelib/devices/adms/admst/ngspiceVersion.xml b/src/spicelib/devices/adms/admst/ngspiceVersion.xml
index 470a5cfc0..ed85ec3ac 100644
--- a/src/spicelib/devices/adms/admst/ngspiceVersion.xml
+++ b/src/spicelib/devices/adms/admst/ngspiceVersion.xml
@@ -609,6 +609,11 @@
         <admst:value-to select="/simulator/tmp" value="%s"/>
       </admst:for-each>
     </admst:when>
+    <admst:when test="[name='\$port_connected']">
+      <admst:for-each select="arguments[position(.)=1]">
+        <admst:value-to select="/simulator/tmp" value="(here->%(.)Node_connected /* port_connected 14 */)"/>
+      </admst:for-each>
+    </admst:when>
     <admst:when test="[name='\$given' or name='\$param_given']">
       <admst:for-each select="arguments[position(.)=1]">
         <admst:assert test="[datatypename='variable' and input='yes']" format="%(../name)(%(../arguments[1])): argument is not a parameter\n"/>