Using quataus, VHDL realization which has the function of the countdown counter, timer design features are timing and backward timing, can suspend count, continue to count. Alarm when backward timing counting is 0 (time is 1 minutes) during the alarm can be thought of as closed

有倒计时功能计时器\time\control.asm.rpt
..................\....\control.bsf
..................\....\control.done
..................\....\control.fit.rpt
..................\....\control.fit.summary
..................\....\control.flow.rpt
..................\....\control.map.rpt
..................\....\control.map.summary
..................\....\control.pin
..................\....\control.pof
..................\....\control.qsf
..................\....\control.sim.rpt
..................\....\control.sof
..................\....\control.tan.rpt
..................\....\control.tan.summary
..................\....\control.vhd
..................\....\control.vhd.bak
..................\....\control.vwf
..................\....\count.bsf
..................\....\count.cvwf
..................\....\count.vhd
..................\....\count.vhd.bak
..................\....\count.vwf
..................\....\counthour.bsf
..................\....\counthour.cvwf
..................\....\counthour.vhd
..................\....\counthour.vhd.bak
..................\....\counthour.vwf
..................\....\db\control.asm.qmsg
..................\....\..\control.cbx.xml
..................\....\..\control.cmp.cdb
..................\....\..\control.cmp.hdb
..................\....\..\control.cmp.logdb
..................\....\..\control.cmp.rdb
..................\....\..\control.cmp.tdb
..................\....\..\control.cmp0.ddb
..................\....\..\control.db_info
..................\....\..\control.eco.cdb
..................\....\..\control.eds_overflow
..................\....\..\control.fit.qmsg
..................\....\..\control.hier_info
..................\....\..\control.hif
..................\....\..\control.lpc.html
..................\....\..\control.lpc.rdb
..................\....\..\control.lpc.txt
..................\....\..\control.map.cdb
..................\....\..\control.map.hdb
..................\....\..\control.map.logdb
..................\....\..\control.map.qmsg
..................\....\..\control.pre_map.cdb
..................\....\..\control.pre_map.hdb
..................\....\..\control.rtlv.hdb
..................\....\..\control.rtlv_sg.cdb
..................\....\..\control.rtlv_sg_swap.cdb
..................\....\..\control.sgdiff.cdb
..................\....\..\control.sgdiff.hdb
..................\....\..\control.sim.cvwf
..................\....\..\control.sim.hdb
..................\....\..\control.sim.qmsg
..................\....\..\control.sim.rdb
..................\....\..\control.sld_design_entry.sci
..................\....\..\control.sld_design_entry_dsc.sci
..................\....\..\control.syn_hier_info
..................\....\..\control.tan.qmsg
..................\....\..\control.tis_db_list.ddb
..................\....\..\control.tmw_info
..................\....\..\prev_cmp_control.asm.qmsg
..................\....\..\prev_cmp_control.fit.qmsg
..................\....\..\prev_cmp_control.map.qmsg
..................\....\..\prev_cmp_control.sim.qmsg
..................\....\..\prev_cmp_control.tan.qmsg
..................\....\..\prev_cmp_time.qmsg
..................\....\..\time.smp_dump.txt
..................\....\..\wed.wsf
..................\....\despaly.vhd
..................\....\dispaly.vhd
..................\....\display.bsf
..................\....\display.vhd
..................\....\incremental_db\compiled_partitions\control.root_partition.map.kpt
..................\....\..............\README
..................\....\secs.cvwf
..................\....\set.bsf
..................\....\set.cvwf
..................\....\set.vhd
..................\....\set.vhd.bak
..................\....\set.vwf
..................\....\seta.cvwf
..................\....\setselect.bsf
..................\....\setselect.vhd
..................\....\setselect.vhd.bak
..................\....\setselect.vwf
..................\....\settimea.cvwf
..................\....\time.qpf
..................\....\timeadd1.cvwf
..................\....\timedes.cvwf
..................\....\timehourjinwei.cvwf
..................\....\timetop.bdf
............

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