Description: 1. For the key input, please join the voice output circuit, representing the keys sw1 feedback of the audio message. Every time when sw1 button depressed, they sent 0.1 seconds of sound 1KHz.
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File list (Check if you may need any files):
final_1
.......\.lso
.......\final_1.bgn
.......\final_1.bit
.......\final_1.bld
.......\final_1.cmd_log
.......\final_1.drc
.......\final_1.ipf
.......\final_1.ipf_ISE_Backup
.......\final_1.ise
.......\final_1.ise_ISE_Backup
.......\final_1.lso
.......\final_1.ncd
.......\final_1.ngc
.......\final_1.ngd
.......\final_1.ngr
.......\final_1.ntrc_log
.......\final_1.pad
.......\final_1.par
.......\final_1.pcf
.......\final_1.prj
.......\final_1.restore
.......\final_1.stx
.......\final_1.syr
.......\final_1.twr
.......\final_1.twx
.......\final_1.ucf
.......\final_1.unroutes
.......\final_1.ut
.......\final_1.vhd
.......\final_1.xpi
.......\final_1.xst
.......\final_1_guide.ncd
.......\final_1_map.map
.......\final_1_map.mrp
.......\final_1_map.ncd
.......\final_1_map.ngm
.......\final_1_pad.csv
.......\final_1_pad.txt
.......\final_1_prev_built.ngd
.......\final_1_summary.html
.......\final_1_summary.xml
.......\final_1_usage.xml
.......\final_1_vhdl.prj
.......\hexcounter_nb.ucf
.......\xst
.......\...\dump.xst
.......\...\........\final_1.prj
.......\...\........\...........\ngx
.......\...\........\...........\...\notopt
.......\...\........\...........\...\opt
.......\...\........\...........\ntrc.scr
.......\...\projnav.tmp
.......\...\work
.......\...\....\hdllib.ref
.......\...\....\hdpdeps.ref
.......\...\....\sub00
.......\...\....\.....\vhpl00.vho
.......\...\....\.....\vhpl01.vho
.......\_impact.cmd
.......\_impact.log
.......\_ngo
.......\....\netlist.lst
.......\_xmsgs
.......\......\bitgen.xmsgs
.......\......\map.xmsgs
.......\......\ngdbuild.xmsgs
.......\......\par.xmsgs
.......\......\trce.xmsgs
.......\......\xst.xmsgs