Modular Design of a simple design, source code, respectively, with Verilog and VHDL description of the two languages, the design of top-level module from the 3 sub-module.

Modular_Design
..............\Imp_modules
..............\...........\module_a
..............\...........\........\module_a.cel
..............\...........\........\module_a.edf
..............\...........\........\module_a.ngo
..............\...........\........\module_a.ucf
..............\...........\........\netlist.lst
..............\...........\........\top.bld
..............\...........\........\top.mrp
..............\...........\........\top.ncd
..............\...........\........\top.ngd
..............\...........\........\top.ngm
..............\...........\........\top.ngo
..............\...........\........\top.pcf
..............\...........\........\top_ngdbuild.nav
..............\...........\........\top_routed.dly
..............\...........\........\top_routed.ncd
..............\...........\........\top_routed.pad
..............\...........\........\top_routed.par
..............\...........\........\top_routed.twr
..............\...........\........\top_routed.xpi
..............\...........\module_b
..............\...........\........\module_b.ngc
..............\...........\........\module_b.ucf
..............\...........\........\netlist.lst
..............\...........\........\top.bld
..............\...........\........\top.mrp
..............\...........\........\top.ncd
..............\...........\........\top.ngd
..............\...........\........\top.ngm
..............\...........\........\top.ngo
..............\...........\........\top.pcf
..............\...........\........\top_ngdbuild.nav
..............\...........\........\top_routed.dly
..............\...........\........\top_routed.ncd
..............\...........\........\top_routed.pad
..............\...........\........\top_routed.par
..............\...........\........\top_routed.twr
..............\...........\........\top_routed.xpi
..............\...........\module_c
..............\...........\........\module_c.edf
..............\...........\........\module_c.ngo
..............\...........\........\module_c.ucf
..............\...........\........\netlist.lst
..............\...........\........\top.bld
..............\...........\........\top.mrp
..............\...........\........\top.ncd
..............\...........\........\top.ngd
..............\...........\........\top.ngm
..............\...........\........\top.ngo
..............\...........\........\top.pcf
..............\...........\........\top_ngdbuild.nav
..............\...........\........\top_routed.dly
..............\...........\........\top_routed.ncd
..............\...........\........\top_routed.pad
..............\...........\........\top_routed.par
..............\...........\........\top_routed.twr
..............\...........\........\top_routed.xpi
..............\Imp_top
..............\.......\netlist.lst
..............\.......\ngd2ver.log
..............\.......\ngd2vhdl.log
..............\.......\top.alf
..............\.......\top.bld
..............\.......\top.cel
..............\.......\top.edf
..............\.......\top.fnf
..............\.......\top.mrp
..............\.......\top.ncd
..............\.......\top.nga
..............\.......\top.ngd
..............\.......\top.ngm
..............\.......\top.ngo
..............\.......\top.pcf
..............\.......\top.sdf
..............\.......\top.ucf
..............\.......\top.v
..............\.......\top.vhd
..............\.......\top_constraints.ucf
..............\.......\top_ngdbuild.nav
..............\.......\top_routed.dly
..............\.......\top_routed.grf
..............\.......\top_routed.ncd
..............\.......\top_routed.pad
..............\.......\top_routed.par
..............\.......\top_routed.twr
..............\.......\top_routed.xpi
..............\.......\_fplan.ucf
..............\PIMs
..............\....\module_a
..............\....\........\module_a.ncd
..............\....\........\module_a.ngc
..............\....\........\module_a.ngm
..............\....\........\top.ngc
..............\....\module_b
..............\....\........\module_b.ncd
..............\....\........\module_b.ngc
..............\....\........\

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