work around, 'define __TERMAL_NODE__ in bsim6.va, first successfull plot

to work around dangling "temper" node in bsim6
fixme, adms populates the termal node slot in the matrix even though
  __TERMAL_NODE__ was not defined, leading to a singular matrix.

fixme, adms
  $port_connected
is not supported, thus just claim it to be connected.

inp2m.c, upgrade to allow bsim6 with 5 nodes

bsim6-2.cir

@@ -12,9 +12,10 @@ vd d  0 dc=1.3
 vg g  0 dc=0
 vs s  0 dc=0
 vb b  0 dc=0
+vt t  0 dc=0
 
 * --- Transistor ---
-m1 d g s b n1 W=10e-6 L=10e-6
+m1 d g s b t n1 W=10e-6 L=10e-6
 
 * --- DC Analysis ---
 .control

src/spicelib/devices/adms/bsim6/admsva/bsim6.va

@@ -568,7 +568,7 @@
 `define IPIoz(nam,def,uni,        des) (*units=uni, type="instance",  desc=des*) parameter integer nam=def from(  0:inf);
 
 
-//`define __THERMAL_NODE__
+`define __THERMAL_NODE__
 `ifdef __THERMAL_NODE__
 
 	module bsim6(d, g, s, b, t);
@@ -2382,7 +2382,7 @@ analog begin
 	AT_i = AT_i * (1.0 + Inv_L * ATL);
 	PTWGT_i = PTWGT_i * (1.0 + Inv_L * PTWGTL);
  `ifdef __THERMAL_NODE__
-   if ($port_connected(t) == 0) begin
+   if (1 == 0) begin
      `ifdef __SHMOD__
           $strobe("5 terminal Module, while 't' node is not connected, SH is activated.");
      `else

src/spicelib/parser/inp2m.c

@@ -31,6 +31,11 @@ model_numnodes(int type)
         return 6;
     }
 
+    if (type == INPtypelook("BSIM6"))       /* bsim6.va with __THERMAL_NODE__ */
+    {
+        return 5;
+    }
+
     return 4;
 }