Using the VHDL Entry Method, design a logic circuit that behaves as a 2-bit adder ( X + Y + CinOrBin ) with carry-in when the control input SubAddn is ‘0’ and behaves as a 2-bit subtracter ( X – Y – CinOrBin ) with borrow-in when the control input SubAddn is ‘1’.

hw2\hw2design1\addsub.asm.rpt
...\..........\addsub.done
...\..........\addsub.fit.rpt
...\..........\addsub.fit.summary
...\..........\addsub.flow.rpt
...\..........\addsub.map.rpt
...\..........\addsub.map.summary
...\..........\addsub.pin
...\..........\addsub.pof
...\..........\addsub.qpf
...\..........\addsub.qsf
...\..........\addsub.qws
...\..........\addsub.sim.rpt
...\..........\addsub.sof
...\..........\addsub.tan.rpt
...\..........\addsub.tan.summary
...\..........\addsub.vhd
...\..........\addsub.vwf
...\..........\db\addsub.asm.qmsg
...\..........\..\addsub.asm_labs.ddb
...\..........\..\addsub.cbx.xml
...\..........\..\addsub.cmp.bpm
...\..........\..\addsub.cmp.cdb
...\..........\..\addsub.cmp.ecobp
...\..........\..\addsub.cmp.hdb
...\..........\..\addsub.cmp.kpt
...\..........\..\addsub.cmp.logdb
...\..........\..\addsub.cmp.qrpt
...\..........\..\addsub.cmp.rdb
...\..........\..\addsub.cmp.tdb
...\..........\..\addsub.cmp0.ddb
...\..........\..\addsub.cmp_merge.kpt
...\..........\..\addsub.db_info
...\..........\..\addsub.eco.cdb
...\..........\..\addsub.eds_overflow
...\..........\..\addsub.fit.qmsg
...\..........\..\addsub.fnsim.cdb
...\..........\..\addsub.fnsim.hdb
...\..........\..\addsub.fnsim.qmsg
...\..........\..\addsub.hier_info
...\..........\..\addsub.hif
...\..........\..\addsub.map.bpm
...\..........\..\addsub.map.cdb
...\..........\..\addsub.map.ecobp
...\..........\..\addsub.map.hdb
...\..........\..\addsub.map.kpt
...\..........\..\addsub.map.logdb
...\..........\..\addsub.map.qmsg
...\..........\..\addsub.map_bb.cdb
...\..........\..\addsub.map_bb.hdb
...\..........\..\addsub.map_bb.hdbx
...\..........\..\addsub.map_bb.logdb
...\..........\..\addsub.pre_map.cdb
...\..........\..\addsub.pre_map.hdb
...\..........\..\addsub.psp
...\..........\..\addsub.rtlv.hdb
...\..........\..\addsub.rtlv_sg.cdb
...\..........\..\addsub.rtlv_sg_swap.cdb
...\..........\..\addsub.sgdiff.cdb
...\..........\..\addsub.sgdiff.hdb
...\..........\..\addsub.sim.hdb
...\..........\..\addsub.sim.qmsg
...\..........\..\addsub.sim.rdb
...\..........\..\addsub.simfam
...\..........\..\addsub.sim_ori.vwf
...\..........\..\addsub.sld_design_entry.sci
...\..........\..\addsub.sld_design_entry_dsc.sci
...\..........\..\addsub.syn_hier_info
...\..........\..\addsub.tan.qmsg
...\..........\..\addsub.tis_db_list.ddb
...\..........\..\prev_cmp_addsub.asm.qmsg
...\..........\..\prev_cmp_addsub.fit.qmsg
...\..........\..\prev_cmp_addsub.map.qmsg
...\..........\..\prev_cmp_addsub.qmsg
...\..........\..\prev_cmp_addsub.sim.qmsg
...\..........\..\prev_cmp_addsub.tan.qmsg
...\..........\..\wed.wsf
...\..........\halfadder.vhd
...\..........\halfsub.vhd
...\..........\incremental_db\compiled_partitions\addsub.root_partition.cmp.atm
...\..........\..............\...................\addsub.root_partition.cmp.dfp
...\..........\..............\...................\addsub.root_partition.cmp.hdbx
...\..........\..............\...................\addsub.root_partition.cmp.kpt
...\..........\..............\...................\addsub.root_partition.cmp.logdb
...\..........\..............\...................\addsub.root_partition.cmp.rcf
...\..........\..............\...................\addsub.root_partition.map.atm
...\..........\..............\...................\addsub.root_partition.map.dpi
...\..........\..............\...................\addsub.root_partition.map.hdbx
...\..........\..............\...................\addsub.root_partition.map.kpt
...\..........\..............\README
...\..........\mux2x1.vhd
...\..........\printout\addsub functional waveform.pdf
...\..........\........\addsub.pdf
...\..........\........\Fitter Resource Usage Summary.pdf
...\..........\........\halfadder.pdf
...\..........\........\halfsub.pdf
...\..........\........\mux2x1.pdf
...\..........\........\tpd.pdf
...\.........2\addsub.asm.rpt
...\..........\addsub.done

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