Does Quartus II synthesis support multi-level hierarchy configurations in VHDL? - Does Quartus II synthesis support multi-level hierarchy configurations in VHDL? Description Multi-level hierarchy configurations in VHDL are currently not supported for the Quartus® II Integrated Synthesis. An example of a multi-level hierarchy configuartion is shown below: --top level ENTITY top IS ... CONFIGURATION top_conf OF top IS ... USE ENTITY work.submodule(first_sub_arch); ... USE ENTITY work.submodule(second_sub_arch); ... --second level ENTITY submodule ... ARCHITECTURE behavioral OF submodule IS ... BEGIN first_sub_arch_instance : lowestmodule ... second_sub_arch_instance : lowestmodule ... END behavioral --third level ENTITY lowestmodule IS ... ARCHITECTURE first_sub_arch OF lowestmodule IS ... ARCHITECTURE second_sub_arch OF lowestmodule IS ... Resolution To work around this issue, define a separate configuration for each of the submodules. An example of this workaround is shown below. --top VHDL ENTITY top IS ... CONFIGURATION top_conf OF top IS ... USE CONFIGURATION work.submodule(first_submodule); ... USE CONFIGURATION work.submodule(second_submodule); ... --second level ENTITY submodule ... ARCHITECTURE behavioral OF submodule IS ... BEGIN first_submodule_instance : lowestmodule ... second_submodule_instance : lowestmodule ... END behavioral CONFIGURATION first_config OF submodule IS ... USE ENTITY work.submodule(first_sub_arch); ... CONFIGURATIOIN second_config OF submodule IS ... USE ENTITY work.submodule(first_sub_arch); ... --third level ENTITY lowestmodule IS ... ARCHITECTURE first_sub_arch OF lowestmodule IS ... ARCHITECTURE second_sub_arch OF lowestmodule IS ... This syntax is scheduled to be supported in a future release of the Quartus II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']