run -ifn xst_spartan2.prj -ifmt mixed -ofn spartan2_clk_wrapper.ngc -ofmt NGC -p xc2s50-6pq208 -ent spartan2_clk_wrapper -keep_hierarchy NO -iobuf  YES -bus_delimiter () -top spartan2_clk_wrapper -uc spartan2_clk_wrapper.xcf -write_timing_constraints yes
