Failed to find 'implement_input_in_lcell' in hierarchical name - Failed to find 'implement_input_in_lcell' in hierarchical name Description Due to a problem in the Quartus® II software version 10.0, this error message may be generated when simulating a design containing an ALTDDIO_IN megafunction. To work around the problem, regenerate the ALTDDIO_IN megafunction using the MegaWizard™ Plug-In Manager in the Quartus II software version 10.0 SP1 or later. Alternatively, edit the variation file produced by the ALTDDIO_IN MegaWizard Plug-In, and remove or comment out the following line: Verilog HDL variation file: ALTDDIO_IN_component.implement_input_in_lcell = "ON", VHDL variation file: implement_input_in_lcell => "ON", This problem is fixed beginning with the Quartus II software version 10.0 SP1. Custom Fields values: ['novalue'] Troubleshooting novalue False ['Simulation'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']