implement 4 bit add using vhdl
File list:
ADDER_4_BIT
..........\db
..........\..\ADDER_4.(0).cnf.cdb
..........\..\ADDER_4.(0).cnf.hdb
..........\..\ADDER_4.(1).cnf.cdb
..........\..\ADDER_4.(1).cnf.hdb
..........\..\ADDER_4.asm.qmsg
..........\..\ADDER_4.cbx.xml
..........\..\ADDER_4.cmp.cdb
..........\..\ADDER_4.cmp.hdb
..........\..\ADDER_4.cmp.logdb
..........\..\ADDER_4.cmp.rdb
..........\..\ADDER_4.cmp.tdb
..........\..\ADDER_4.cmp0.ddb
..........\..\ADDER_4.dbp
..........\..\ADDER_4.db_info
..........\..\ADDER_4.eco.cdb
..........\..\ADDER_4.eds_overflow
..........\..\ADDER_4.fit.qmsg
..........\..\ADDER_4.fnsim.cdb
..........\..\ADDER_4.fnsim.hdb
..........\..\ADDER_4.fnsim.qmsg
..........\..\ADDER_4.hier_info
..........\..\ADDER_4.hif
..........\..\ADDER_4.map.cdb
..........\..\ADDER_4.map.hdb
..........\..\ADDER_4.map.logdb
..........\..\ADDER_4.map.qmsg
..........\..\ADDER_4.pre_map.cdb
..........\..\ADDER_4.pre_map.hdb
..........\..\ADDER_4.psp
..........\..\ADDER_4.pss
..........\..\ADDER_4.rtlv.hdb
..........\..\ADDER_4.rtlv_sg.cdb
..........\..\ADDER_4.rtlv_sg_swap.cdb
..........\..\ADDER_4.sgdiff.cdb
..........\..\ADDER_4.sgdiff.hdb
..........\..\ADDER_4.sim.cvwf
..........\..\ADDER_4.sim.hdb
..........\..\ADDER_4.sim.qmsg
..........\..\ADDER_4.sim.rdb
..........\..\ADDER_4.sld_design_entry.sci
..........\..\ADDER_4.sld_design_entry_dsc.sci
..........\..\ADDER_4.syn_hier_info
..........\..\ADDER_4.tan.qmsg
..........\..\prev_cmp_ADDER_4.sim.qmsg
..........\..\wed.wsf
..........\ADDER_4.asm.rpt
..........\ADDER_4.bdf
..........\ADDER_4.bsf
..........\ADDER_4.done
..........\ADDER_4.fit.rpt
..........\ADDER_4.fit.summary
..........\ADDER_4.flow.rpt
..........\ADDER_4.map.rpt
..........\ADDER_4.map.summary
..........\ADDER_4.pin
..........\ADDER_4.pof
..........\ADDER_4.qpf
..........\ADDER_4.qsf
..........\ADDER_4.qws
..........\ADDER_4.sim.rpt
..........\ADDER_4.sof
..........\ADDER_4.tan.rpt
..........\ADDER_4.tan.summary
..........\ADDER_4.vwf
..........\F_A.bdf
..........\F_A.bsf
..........\prev_cmp_ADDER_4.qmsg