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. 

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quartus-10.0-0.50-readme.txt 
Readme file for Quartus II 10.0 Patch 0.50
Copyright (C) Altera Corporation 2010 All right reserved. 
Patch created on September 03 2010
Patch SPR#: 352263 
SPRs fixed: 349546 
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Problem:  DPRIO does not work during simulation for Cyclone IVGX.


Solution: Fix issue with the reconfig_done only being asserted for 
          one clock cycle (Note that in the other transceiver 
          families this signal remains high after succesfull 
          configuration)


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.