INTEL DOES NOT WARRANT THAT THE FUNCTIONS CONTAINED IN THIS PATCH WILL MEET YOUR REQUIREMENTS, OR THAT THE OPERATION OF THIS PATCH WILL BE UNINTERRUPTED OR ERROR-FREE. //**************************************************************** quartus-20.2-0.15-readme.txt Readme file for Quartus Prime 20.2 Patch 0.15 Copyright (C) Intel Corporation 2020 All right reserved. Patch created on July 15 2020 Patch Case#: 14011938355 //**************************************************************** Description: Arria 10 design with "Periphery to Core Placement and Routing Optimization" setting enabled may encounter an IE following periphery placement operations (Internal Error: Sub-system: PTI, File: /quartus/tsm/pti/pti_delay_annotator.cpp, Line: 1444, possibly other similar errors) This patch fixes the issue and avoids the Internal Error. Caution - You must either have previously installed the Quartus Prime 20.2 software or must install the Quartus Prime 20.2 software before installing this patch. Otherwise, the patch will not be installed correctly and the Quartus Prime software will not run properly.