FPGA implementation using verilog string and the computer serial port and single-character accurate communication, 9600, FPGA using verilog to achieve serial and single-character strings, and the computer communicate accurate and correct, that is, through the computer to the FPGA send any length data, FPGA return PC the same data. 9600 of the routine in order to get accurate baud using a 50M clock multiplier 3, the test can be used, if unknown place, you can give me a message

TX_RX\db\.cmp.kpt
.....\..\PLL_altpll.v
.....\..\prev_cmp_USART.qmsg
.....\..\USART.asm.qmsg
.....\..\USART.asm.rdb
.....\..\USART.asm_labs.ddb
.....\..\USART.cbx.xml
.....\..\USART.cmp.bpm
.....\..\USART.cmp.cdb
.....\..\USART.cmp.hdb
.....\..\USART.cmp.idb
.....\..\USART.cmp.logdb
.....\..\USART.cmp.rdb
.....\..\USART.cmp_merge.kpt
.....\..\USART.cycloneive_io_sim_cache.31um_ff_1200mv_0c_fast.hsd
.....\..\USART.cycloneive_io_sim_cache.31um_ss_1200mv_0c_slow.hsd
.....\..\USART.cycloneive_io_sim_cache.31um_ss_1200mv_85c_slow.hsd
.....\..\USART.db_info
.....\..\USART.eda.qmsg
.....\..\USART.fit.qmsg
.....\..\USART.hier_info
.....\..\USART.hif
.....\..\USART.logic_util_heuristic.dat
.....\..\USART.lpc.html
.....\..\USART.lpc.rdb
.....\..\USART.lpc.txt
.....\..\USART.map.ammdb
.....\..\USART.map.bpm
.....\..\USART.map.cdb
.....\..\USART.map.hdb
.....\..\USART.map.kpt
.....\..\USART.map.logdb
.....\..\USART.map.qmsg
.....\..\USART.map.rdb
.....\..\USART.map_bb.cdb
.....\..\USART.map_bb.hdb
.....\..\USART.map_bb.logdb
.....\..\USART.pplq.rdb
.....\..\USART.pre_map.hdb
.....\..\USART.pti_db_list.ddb
.....\..\USART.root_partition.map.reg_db.cdb
.....\..\USART.routing.rdb
.....\..\USART.rtlv.hdb
.....\..\USART.rtlv_sg.cdb
.....\..\USART.rtlv_sg_swap.cdb
.....\..\USART.sld_design_entry.sci
.....\..\USART.sld_design_entry_dsc.sci
.....\..\USART.smart_action.txt
.....\..\USART.sta.qmsg
.....\..\USART.sta.rdb
.....\..\USART.sta_cmp.8_slow_1200mv_85c.tdb
.....\..\USART.tiscmp.fastest_slow_1200mv_0c.ddb
.....\..\USART.tiscmp.fastest_slow_1200mv_85c.ddb
.....\..\USART.tiscmp.fast_1200mv_0c.ddb
.....\..\USART.tiscmp.slow_1200mv_0c.ddb
.....\..\USART.tiscmp.slow_1200mv_85c.ddb
.....\..\USART.tis_db_list.ddb
.....\..\USART.vpr.ammdb
.....\greybox_tmp\cbx_args.txt
.....\incremental_db\compiled_partitions\USART.db_info
.....\..............\...................\USART.root_partition.cmp.ammdb
.....\..............\...................\USART.root_partition.cmp.cdb
.....\..............\...................\USART.root_partition.cmp.dfp
.....\..............\...................\USART.root_partition.cmp.hdb
.....\..............\...................\USART.root_partition.cmp.logdb
.....\..............\...................\USART.root_partition.cmp.rcfdb
.....\..............\...................\USART.root_partition.map.cdb
.....\..............\...................\USART.root_partition.map.dpi
.....\..............\...................\USART.root_partition.map.hbdb.cdb
.....\..............\...................\USART.root_partition.map.hbdb.hb_info
.....\..............\...................\USART.root_partition.map.hbdb.hdb
.....\..............\...................\USART.root_partition.map.hbdb.sig
.....\..............\...................\USART.root_partition.map.hdb
.....\..............\...................\USART.root_partition.map.kpt
.....\..............\...................\USART.rrp.hdb
.....\..............\README
.....\output_files\greybox_tmp\cbx_args.txt
.....\............\USART.asm.rpt
.....\............\USART.done
.....\............\USART.eda.rpt
.....\............\USART.fit.rpt
.....\............\USART.fit.smsg
.....\............\USART.fit.summary
.....\............\USART.flow.rpt
.....\............\USART.jdi
.....\............\USART.map.rpt
.....\............\USART.map.smsg
.....\............\USART.map.summary
.....\............\USART.pin
.....\............\USART.sof
.....\............\USART.sta.rpt
.....\............\USART.sta.summary
.....\PLL.ppf
.....\PLL.qip
.....\PLL.v
.....\PLLJ_PLLSPE_INFO.txt
.....\PLL_bb.v
.....\rx_bps.v
.....\rx_bps.v.bak
.....\simulation\modelsim\modelsim.ini

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