it is design by verilog language.the function is encode the keyboard and show on lcd. notice:the encode part is only encode one key. and only encode part of the keyboard.

ps2_lcd16\.qsys_edit\filters.xml
.........\..........\preferences.xml
.........\db\altsyncram_ca01.tdf
.........\..\altsyncram_rvv.tdf
.........\..\logic_util_heursitic.dat
.........\..\prev_cmp_ps2_lcd16.qmsg
.........\..\ps2_lcd16.ace_cmp.bpm
.........\..\ps2_lcd16.ace_cmp.cdb
.........\..\ps2_lcd16.ace_cmp.hdb
.........\..\ps2_lcd16.asm.qmsg
.........\..\ps2_lcd16.asm.rdb
.........\..\ps2_lcd16.asm_labs.ddb
.........\..\ps2_lcd16.atom_map.rvd
.........\..\ps2_lcd16.cbx.xml
.........\..\ps2_lcd16.cmp.bpm
.........\..\ps2_lcd16.cmp.cdb
.........\..\ps2_lcd16.cmp.hdb
.........\..\ps2_lcd16.cmp.idb
.........\..\ps2_lcd16.cmp.kpt
.........\..\ps2_lcd16.cmp.logdb
.........\..\ps2_lcd16.cmp.rdb
.........\..\ps2_lcd16.cmp0.ddb
.........\..\ps2_lcd16.cmp1.ddb
.........\..\ps2_lcd16.cmp_merge.kpt
.........\..\ps2_lcd16.db_info
.........\..\ps2_lcd16.eco.cdb
.........\..\ps2_lcd16.eda.qmsg
.........\..\ps2_lcd16.fit.qmsg
.........\..\ps2_lcd16.hier_info
.........\..\ps2_lcd16.hif
.........\..\ps2_lcd16.ipinfo
.........\..\ps2_lcd16.lfp.cdb
.........\..\ps2_lcd16.lpc.html
.........\..\ps2_lcd16.lpc.rdb
.........\..\ps2_lcd16.lpc.txt
.........\..\ps2_lcd16.map.ammdb
.........\..\ps2_lcd16.map.bpm
.........\..\ps2_lcd16.map.cdb
.........\..\ps2_lcd16.map.hdb
.........\..\ps2_lcd16.map.kpt
.........\..\ps2_lcd16.map.logdb
.........\..\ps2_lcd16.map.qmsg
.........\..\ps2_lcd16.map.rdb
.........\..\ps2_lcd16.map_bb.cdb
.........\..\ps2_lcd16.map_bb.hdb
.........\..\ps2_lcd16.map_bb.logdb
.........\..\ps2_lcd16.pplq.rdb
.........\..\ps2_lcd16.pre_map.hdb
.........\..\ps2_lcd16.ps2_lcd160.rtl.mif
.........\..\ps2_lcd16.pti_db_list.ddb
.........\..\ps2_lcd16.root_partition.map.reg_db.cdb
.........\..\ps2_lcd16.routing.rdb
.........\..\ps2_lcd16.rpp.qmsg
.........\..\ps2_lcd16.rtlv.hdb
.........\..\ps2_lcd16.rtlv_sg.cdb
.........\..\ps2_lcd16.rtlv_sg_swap.cdb
.........\..\ps2_lcd16.sgate.rvd
.........\..\ps2_lcd16.sgate_sm.rvd
.........\..\ps2_lcd16.sgdiff.cdb
.........\..\ps2_lcd16.sgdiff.hdb
.........\..\ps2_lcd16.sld_design_entry.sci
.........\..\ps2_lcd16.sld_design_entry_dsc.sci
.........\..\ps2_lcd16.smart_action.txt
.........\..\ps2_lcd16.smp_dump.txt
.........\..\ps2_lcd16.sta.qmsg
.........\..\ps2_lcd16.sta.rdb
.........\..\ps2_lcd16.sta_cmp.6_slow.tdb
.........\..\ps2_lcd16.syn_hier_info
.........\..\ps2_lcd16.taw.rdb
.........\..\ps2_lcd16.tis_db_list.ddb
.........\..\ps2_lcd16.vpr.ammdb
.........\greybox_tmp\cbx_args.txt
.........\incremental_db\compiled_partitions\ps2_lcd16.db_info
.........\..............\...................\ps2_lcd16.root_partition.cmp.ammdb
.........\..............\...................\ps2_lcd16.root_partition.cmp.cdb
.........\..............\...................\ps2_lcd16.root_partition.cmp.dfp
.........\..............\...................\ps2_lcd16.root_partition.cmp.hdb
.........\..............\...................\ps2_lcd16.root_partition.cmp.kpt
.........\..............\...................\ps2_lcd16.root_partition.cmp.logdb
.........\..............\...................\ps2_lcd16.root_partition.cmp.rcfdb
.........\..............\...................\ps2_lcd16.root_partition.map.cdb
.........\..............\...................\ps2_lcd16.root_partition.map.dpi
.........\..............\...................\ps2_lcd16.root_partition.map.hbdb.cdb
.........\..............\...................\ps2_lcd16.root_partition.map.hbdb.hb_info
.........\..............\...................\ps2_lcd16.root_partition.map.hbdb.hdb
.........\..............\...................\ps2_lcd16.root_partition.map.hbdb.sig
.........\..............\...................\ps2_lcd16.root_partition.map.hdb
.........\..............\...................\ps2_lcd16.root_partition.map.kpt
.........\..............\README
.........\lcd16.v
.........\lcd16.v.bak
.........\output_file.jic
.........\output_file.map
.........\...........s\ps2_lcd16.asm.rpt
.........\............\ps2_lcd16.cdf
.........\............\ps2_lcd16.done
.........\............\ps2_lcd16.eda.rpt
.........\............\ps2_lcd16.fit.rpt
.........\............\ps2_lcd16.fit.smsg
......

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