ALTERA 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-10.0-0.45-readme.txt Readme file for Quartus II 10.0 Patch 0.45 Copyright (C) Altera Corporation 2010 All right reserved. Patch created on August 20 2010 Patch SPR#: 351103 SPRs fixed: 351367 //**************************************************************** Problem: Quartus II 10.0 triggers the following Internal Error when compiling a design for Arria II GX: Internal Error: Sub-system: ASMIO, File: /quartus/comp/asmio/asmio_buf.cpp, Line: 1153 Unsupported i/o standard Solution: The problem is that the Differential SSTL 1.5v class 1 was missing for clock pins in Arria II GX device database. This patch fixes the problem. Caution - You must either have previously installed the Quartus II 10.0 software or must install the Quartus II 10.0 software before installing this patch. Otherwise, the patch will not be installed correctly and the Quartus II software will not run properly.