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Quartus II software version 9.1 delivers the #1 performance and productivity for FPGA, CPLD, and HardCopy ASIC designs. This new release supports Altera's new lowest cost, lowest power FPGA familyCyclone IV GX FPGAs with integrated 3.125-Gbps transceivers. The Cyclone IV GX FPGA family is targeted to high-volume, cost-sensitive applications, enabling you to meet increasing bandwidth requirements while lowering costs. Version 9.1 further extends Quartus II software's productivity advantage by delivering 20 percent overall compile time reduction over Quartus II software version 9.0, and maintains 2x to 3x faster compile times than the nearest competitor for high-density 65-nm and 40-nm designs. In addition, the new Rapid Recompile feature in version 9.1 reduces compile times by 50 percent (on average) compared to a full compile when small engineering change order (ECO)-type design changes are made. Finally, this release also supports the largest FPGA in the industryStratix IV E EP4SE820 devices.
What's new in Quartus II design software version 9.1?

New Rapid Recompile for Faster Design Iteration
The new Rapid Recompile feature enhances Quartus II software's ability to further minimize design compilation times. Rapid Recompile maximizes productivity by enabling faster small ECO-type design changes after a full compile, reducing compilation times by 50 percent (on average) versus running another full compile on the design. Rapid Recompile also significantly improves productivity during timing closure by preserving critical timing during late design changes.
Cyclone IV GX FPGA Support
Quartus II software now supports Altera's new generation of low-cost and low-power FPGAsCyclone IV GX FPGAs with integrated transceivers. This transceiver variant in the Cyclone IV FPGA family supports mainstream protocols up to 3.125-Gbps with integrated hard PCIe intellectual property (IP) blocks. Compared to Cyclone III FPGAs with external transceivers, Cyclone IV GX FPGAs consume up to 30 percent less total power. Quartus II software version 9.1 offers PowerPlay Power Analysis and Optimization Technology to achieve the lowest power within your power budget. Start your Cyclone IV GX design with Quartus II software and take advantage of the power and cost savings without sacrificing performance.
Industry's Fastest Compile Times
Quartus II software version 9.1 continues to deliver the industry's fastest compile times (2X to 3X faster than the nearest competitor for high-density 65-nm and 40-nm designs). Version 9.1 also delivers 20 percent overall compile time reduction over Quartus II software version 9.0 in all design stages. Regardless of which design stage you are at, you will experience faster compile times by upgrading to the latest version 9.1 release. In addition, Quartus II software introduces the new Rapid Recompile feature to extend its leadership in design compilation time.
Faster Multiprocessor Support with New Parallel Synthesis
Quartus II software is the leader in multi-processor support and is the only FPGA design software that performs parallel processing in all synthesis, place-and-route, static timing analysis, and assembler design stages. Quartus II software also can achieve a 20 percent compilation time saving, on average. In the version 9.1 release, new parallel synthesis support significantly reduces synthesis time for designs with partitions.
Faster Timing-Driven Synthesis
Timing-driven synthesis increases performance of your design by performing synthesis while keeping timing constraints in mind. Version 9.1 delivers an enhanced timing-driven synthesis feature, enabling you to improve design performance in 10 percent less compile time than the previous versions for faster timing closure.
Improved Incremental Compile
Time spent closing timing usually pertains to one or two critical blocks of your design. The incremental compile feature allows you make changes and compile just the critical blocks until timing is closed. This methodology allows you to reduce your compilation times by up to 70 percent compared to a flat compile. Version 9.1 adds more flexibility to close timing and optimize your design with partitions.
INSTALLATION
1.) unpack the files
2.) burn or mount the image
3.) install
4.) Check SHooters Dir Readme.txt
Homepage: http://www.altera.com/products/software/quartus-ii/whats-new/swf-qts-whats-new.html

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