Internal Error: Sub-system: LAB, File: /quartus/legality/lab/lab_nd_config_creator_module.cpp, Line: 1062 An illegal ALE was detected. - Internal Error: Sub-system: LAB, File: /quartus/legality/lab/lab_nd_config_creator_module.cpp, Line: 1062 An illegal ALE was detected. Description Due to a problem in the Intel® Quartus® Prime Pro edition software version 20.1 and 20.2, you may see this internal error during the fitter stage.This problem only occurs in designs targeting eSRAM Intel® Stratix® 10 FPGA IP. Resolution To work around this problem, perform the following actions 1. open /esram_1914/synth/_1914_<>.sv 2. find the c0_sd_n_0_reg signal and remove the altera_attribute as follows. (before) (* altera_attribute = "-name FORCE_HYPER_REGISTER_FOR_UIB_ESRAM_CORE_REGISTER ON"*) logic c0_sd_n_0_reg/* synthesis dont_merge */; (after) logic c0_sd_n_0_reg/* synthesis dont_merge */; 3. repeat same changes for all other signals for c1_sd_n_0_reg to c7_sd_n_0_reg if you use other eSRAM channels. This problem is fixed beginning with version 20.3 of the Intel® Quartus® Prime Pro edition software. Custom Fields values: ['novalue'] Troubleshooting 1508227182 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 20.3 20.1 ['Stratix® 10 MX FPGA', 'Stratix® 10 TX FPGA'] ['novalue'] ['novalue'] ['novalue']