xst -ifn design_top.xst
#-ifn (input file name with project settings and options)
ngdbuild -sd .. -dd . -p xc7v585tffg1157-2 -uc design_top.ucf design_top.ngd
#-sd (search directory), -dd (destination directory), -p (part), -uc (UCF
#file)
map -xe c -w -pr b -ol high -t 2 design_top_map.ncd design_top.pcf
#-xe c (extra effort), -w (overwrite existing file), -pr b (push registers
#into IOBs), -ol (overall effort), -t (placer cost table)
par -xe c -w -ol high -t 2 design_top_map.ncd design_top.ncd
#-xe c (extra effort), -w (overwrite existing file), -ol (overall effort), -t
#(placer cost table)
trce -u -e 10 design_top.ncd design_top.pcf
#-u (report uncovered paths), -e (generate error report)
bitgen -w design_top.ncd design_top.pcf