ALTFP_ATAN megafunction incorrectly ties its clock enable port to ground - ALTFP_ATAN megafunction incorrectly ties its clock enable port to ground Description In the ALTFP_ATAN megafunction, the clk_en port is incorrectly tied to ground if you do not enable the port in the MegaWizard Plug-In Manager. Resolution In the ALTFP_ATAN MegaWizard Plug-In Manager, enable the clk_en port and either tie it to VCC or control the port as required for your design. This issue is corrected in the Quartus II software version 12.0 SP1. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] 12.0.1 12.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']