How do I get the waveform dump file in simulate?


I'd like to get the simulation waveform dump file when I do run the simulation of AT421-MN-80001.

there is some options in makefile such as 

# NC verilog option
NCSIM_OPTIONS = -unbuffered -status -LICQUEUE -f ncsim.args -cdslib cds.lib -hdlvar hdl.var -NBASYNC +TarmacI +TarmacM +TarmacR +TarmacB +TarmacE

after all test passed, I can't find any waveform dump file of nc.

would you please let me how do I get the waveform of the at421 simulation?

and I find someting snap. but I don't know what am I supposed to do with this snap..  

Would yo uplease let me know does anyone know this to use?