--- /dev/null
+from nmigen import Module, Signal
+#from nmigen.back.pysim import Simulator, Delay, Settle
+from nmutil.formaltest import FHDLTestCase
+#import unittest
+from soc.decoder.isa.caller import ISACaller
+from soc.decoder.power_decoder import (create_pdecode)
+from soc.decoder.power_decoder2 import (PowerDecode2)
+from soc.simulator.program import Program
+from soc.decoder.isa.caller import ISACaller, inject, RADIX
+from soc.decoder.selectable_int import SelectableInt
+from soc.decoder.orderedset import OrderedSet
+from soc.decoder.isa.all import ISA
+
+if __name__ == "__main__":
+ radix = RADIX(None,None) #first test to avoid syntax errors
+ radix._walk_tree()
+ print("DONE")