This when the FPGA write their own learning keyboard scan code. Use is edge detection method, and its filtering processing, I test simulation success!

key_scan\db\key_scan.asm.qmsg
........\..\key_scan.asm.rdb
........\..\key_scan.asm_labs.ddb
........\..\key_scan.cbx.xml
........\..\key_scan.cmp.bpm
........\..\key_scan.cmp.cdb
........\..\key_scan.cmp.ecobp
........\..\key_scan.cmp.hdb
........\..\key_scan.cmp.kpt
........\..\key_scan.cmp.logdb
........\..\key_scan.cmp.rdb
........\..\key_scan.cmp.tdb
........\..\key_scan.cmp0.ddb
........\..\key_scan.cmp2.ddb
........\..\key_scan.cmp_merge.kpt
........\..\key_scan.db_info
........\..\key_scan.eco.cdb
........\..\key_scan.eda.qmsg
........\..\key_scan.fit.qmsg
........\..\key_scan.hier_info
........\..\key_scan.hif
........\..\key_scan.lpc.html
........\..\key_scan.lpc.rdb
........\..\key_scan.lpc.txt
........\..\key_scan.map.bpm
........\..\key_scan.map.cdb
........\..\key_scan.map.ecobp
........\..\key_scan.map.hdb
........\..\key_scan.map.kpt
........\..\key_scan.map.logdb
........\..\key_scan.map.qmsg
........\..\key_scan.map_bb.cdb
........\..\key_scan.map_bb.hdb
........\..\key_scan.map_bb.logdb
........\..\key_scan.pre_map.cdb
........\..\key_scan.pre_map.hdb
........\..\key_scan.rtlv.hdb
........\..\key_scan.rtlv_sg.cdb
........\..\key_scan.rtlv_sg_swap.cdb
........\..\key_scan.sgdiff.cdb
........\..\key_scan.sgdiff.hdb
........\..\key_scan.sld_design_entry.sci
........\..\key_scan.sld_design_entry_dsc.sci
........\..\key_scan.smart_action.txt
........\..\key_scan.syn_hier_info
........\..\key_scan.tan.qmsg
........\..\key_scan.tis_db_list.ddb
........\..\key_scan.tmw_info
........\..\logic_util_heursitic.dat
........\..\prev_cmp_key_scan.asm.qmsg
........\..\prev_cmp_key_scan.eda.qmsg
........\..\prev_cmp_key_scan.fit.qmsg
........\..\prev_cmp_key_scan.map.qmsg
........\..\prev_cmp_key_scan.qmsg
........\..\prev_cmp_key_scan.tan.qmsg
........\incremental_db\compiled_partitions\key_scan.root_partition.cmp.cdb
........\..............\...................\key_scan.root_partition.cmp.dfp
........\..............\...................\key_scan.root_partition.cmp.hdb
........\..............\...................\key_scan.root_partition.cmp.kpt
........\..............\...................\key_scan.root_partition.cmp.logdb
........\..............\...................\key_scan.root_partition.cmp.rcfdb
........\..............\...................\key_scan.root_partition.cmp.re.rcfdb
........\..............\...................\key_scan.root_partition.map.cdb
........\..............\...................\key_scan.root_partition.map.dpi
........\..............\...................\key_scan.root_partition.map.hdb
........\..............\...................\key_scan.root_partition.map.kpt
........\..............\README
........\key_scan.asm.rpt
........\key_scan.done
........\key_scan.dpf
........\key_scan.eda.rpt
........\key_scan.fit.rpt
........\key_scan.fit.smsg
........\key_scan.fit.summary
........\key_scan.flow.rpt
........\key_scan.map.rpt
........\key_scan.map.summary
........\key_scan.pin
........\key_scan.pof
........\key_scan.qpf
........\key_scan.qsf
........\key_scan.qws
........\key_scan.sof
........\key_scan.tan.rpt
........\key_scan.tan.summary
........\key_scan.v
........\key_scan.v.bak
........\key_scan_assignment_defaults.qdf
........\key_scan_nativelink_simulation.rpt
........\simulation\modelsim\key_scan.sft
........\..........\........\key_scan.vo
........\..........\........\key_scan.vt
........\..........\........\key_scan.vt.bak
........\..........\........\key_scan_modelsim.xrf
........\..........\........\key_scan_run_msim_rtl_verilog.do
........\..........\........\key_scan_run_msim_rtl_verilog.do.bak
........\..........\........\key_scan_v.sdo
........\..........\........\modelsim.ini
........\..........\........\msim_transcript
........\..........\........\rtl_work\key_scan\verilog.prw

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