added unknown method which throws an error in the normal case but not

if it is inside make-simulated.

For nsenodes, I ask for a pc850 if available for more CPU horsepower

tbsetup/ns2ir/nsenode.tcl

@@ -90,7 +90,13 @@ NSENode instproc updatedb {DB} {
 	append nseconfig "set simcode_present $simcode_present\n\n"
     }
 
-    # NSE code runs only FreeBSD as of now
+    # We prefer to get a pc850 if available to take advantage of more CPU horsepower
+    tb-make-soft-vtype pcnsenode {pc850}
+    tb-set-hardware $self pcnsenode
+
+    # NSE code runs only FreeBSD as of now. 
     $self set osid "FBSD-STD"    
+
+    # The Node class's updatedb method updates the DB
     $self next $DB
 }

tbsetup/ns2ir/parse.tcl.in

@@ -91,6 +91,15 @@ proc punsup {msg} {
     }
 }	
 
+#
+# We ignore unsupported tcl commands if it is inside
+# make-simulated else error is flagged i.e. we call 
+# perror which does the right thing
+#
+proc unknown {args} {
+    perror "$args"
+}
+
 # Parse Arguments
 
 # We setup a few globals that we need for argument parsing.