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. //**************************************************************** readme_patch_9.0_0.49.txt Readme file for Quartus II 9.0 Patch 0.49 (Linux version) Copyright (C) Altera Corporation 2009 All right reserved. Patch created on 06/02/2009 Patch SPR#: 311266 SPRs fixed: 307178, 309110 //**************************************************************** Problem: Stratix IV GX/GT receivers require tweaking on power-up due for best operation and highest bitrate and signal integrity performance. This requires a specific algorithm implemented in soft-logic to perform the tweaks, which to-date had not yet been proven. Solution: This patch includes the performance tweaking soft-logic block that will find the properly configured receivers, and automatically perform the tuning. Caution - You must either have previously installed the Quartus II software version 9.0 or must install the Quartus II software version 9.0 before installing this patch. Otherwise, the patch will not be installed correctly and the Quartus II software will not run properly.