File list (Check if you may need any files):
signal_generator\signal_generator.cmd_log
................\signal_generator.ise
................\signal_generator.lso
................\signal_generator.ngc
................\signal_generator.ngr
................\signal_generator.ntrc_log
................\signal_generator.prj
................\signal_generator.restore
................\signal_generator.stx
................\signal_generator.syr
................\signal_generator.vhd
................\signal_generator.xst
................\signal_generator_vhdl.prj
................\signal_generator_xst.xrpt
................\xst\dump.xst\signal_generator.prj\ntrc.scr
................\...\work\hdllib.ref
................\...\....\hdpdeps.ref
................\...\....\sub00\vhpl00.vho
................\...\....\.....\vhpl01.vho
................\_xmsgs\xst.xmsgs
................\xst\dump.xst\signal_generator.prj\ngx\notopt
................\...\........\....................\...\opt
................\...\........\....................\ngx
................\...\........\signal_generator.prj
................\...\work\sub00
................\signal_generator_xdb\tmp
................\xst\dump.xst
................\...\projnav.tmp
................\...\work
................\signal_generator_xdb
................\xst
................\_xmsgs
signal_generator