顺序显示

7个发光二极管依次一个一个的时间显示，代码是用verilog编写的，是对艾伯特V2斯巴达板验证。

led
_ngo
_xmsgs
constraint.ucf
ipcore_dir
iseconfig
led.bgn
led.bin
led.bit
led.bld
led.cmd_log
led.drc
led.gise
led.lso
led.ncd
led.ngc
led.ngd
led.ngr
led.pad
led.par
led.pcf
led.prj
led.ptwx
led.syr
led.twr
led.twx
led.unroutes
led.ut
led.v
led.xise
led.xpi
led.xst
led_bitgen.xwbt
led_envsettings.html
led_guide.ncd
led_map.map
led_map.mrp
led_map.ncd
led_map.ngm
led_map.xrpt
led_ngdbuild.xrpt
led_pad.csv
led_pad.txt
led_par.xrpt
led_summary.html
led_summary.xml
led_usage.xml
led_xst.xrpt
usage_statistics_webtalk.html
webtalk.log
webtalk_pn.xml
xlnx_auto_0_xdb
xst
_ngo
netlist.lst