This code can be used to generate positive cosine signal waveforms, using FPGA' s internal ROM to place a sampling point is the cosine of the data tables, the circulation method of taking the site to achieve a continuous output waveform.

DDS
...\accumulater.bsf
...\accumulater.vhd
...\addr_convertor.bsf
...\addr_convertor.vhd
...\cos.mif
...\data_convertor.bsf
...\data_convertor.vhd
...\db
...\..\altsyncram_0q61.tdf
...\..\altsyncram_ar61.tdf
...\..\altsyncram_fr61.tdf
...\..\DDS.asm.qmsg
...\..\DDS.asm_labs.ddb
...\..\DDS.cbx.xml
...\..\DDS.cmp.bpm
...\..\DDS.cmp.cdb
...\..\DDS.cmp.ecobp
...\..\DDS.cmp.hdb
...\..\DDS.cmp.logdb
...\..\DDS.cmp.rdb
...\..\DDS.cmp.tdb
...\..\DDS.cmp0.ddb
...\..\DDS.cmp_bb.cdb
...\..\DDS.cmp_bb.hdb
...\..\DDS.cmp_bb.logdb
...\..\DDS.cmp_bb.rcf
...\..\DDS.dbp
...\..\DDS.db_info
...\..\DDS.eco.cdb
...\..\DDS.eds_overflow
...\..\DDS.fit.qmsg
...\..\DDS.fnsim.cdb
...\..\DDS.fnsim.hdb
...\..\DDS.fnsim.qmsg
...\..\DDS.hier_info
...\..\DDS.hif
...\..\DDS.map.bpm
...\..\DDS.map.cdb
...\..\DDS.map.ecobp
...\..\DDS.map.hdb
...\..\DDS.map.logdb
...\..\DDS.map.qmsg
...\..\DDS.map_bb.cdb
...\..\DDS.map_bb.hdb
...\..\DDS.map_bb.logdb
...\..\DDS.merge.qmsg
...\..\DDS.pre_map.cdb
...\..\DDS.pre_map.hdb
...\..\DDS.psp
...\..\DDS.pss
...\..\DDS.rtlv.hdb
...\..\DDS.rtlv_sg.cdb
...\..\DDS.rtlv_sg_swap.cdb
...\..\DDS.sgdiff.cdb
...\..\DDS.sgdiff.hdb
...\..\DDS.signalprobe.cdb
...\..\DDS.sim.cvwf
...\..\DDS.sim.hdb
...\..\DDS.sim.qmsg
...\..\DDS.sim.rdb
...\..\DDS.sld_design_entry.sci
...\..\DDS.sld_design_entry_dsc.sci
...\..\DDS.syn_hier_info
...\..\DDS.tan.qmsg
...\..\wed.wsf
...\DDS.asm.rpt
...\DDS.bdf
...\DDS.done
...\DDS.fit.rpt
...\DDS.fit.smsg
...\DDS.fit.summary
...\DDS.flow.rpt
...\DDS.map.rpt
...\DDS.map.summary
...\DDS.merge.rpt
...\DDS.pin
...\DDS.pof
...\DDS.qpf
...\DDS.qsf
...\DDS.qws
...\DDS.sim.rpt
...\DDS.sof
...\DDS.tan.rpt
...\DDS.tan.summary
...\DDS.vwf
...\k_generator.bsf
...\k_generator.vhd
...\lpm_rom0.bsf
...\lpm_rom0.cmp
...\lpm_rom0.inc
...\lpm_rom0.vhd
...\lpm_rom1.bsf
...\lpm_rom1.cmp
...\lpm_rom1.inc
...\lpm_rom1.vhd
...\my_mux.bsf
...\my_mux.vhd
...\phase_adder.bsf
...\phase_adder.vhd

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