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Visitor
Visitor
483 Views
Registered: ‎09-26-2018

Configuration bitstream compression using iMpact for QPro XQR17V16 Xilinx PROM

I am using Xilinx PROM XQR17V16 for configuration of Virtex-5 FPGA. Xilinx PROM XQR17V16 doesn't have in-built decompressor unlike platform PROMs XCFxxP.  I want to use bit file compression feature in iMPACT and since XQR17V16 doesn't have in-built decompressor so I want to design the decompressor by myself. I try to find out the compression scheme/algorithm used by xilinx in iMpact for bitstream configuration but couldn't found any information regarding this. Could someone help me out here?

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Xilinx Employee
Xilinx Employee
451 Views
Registered: ‎06-06-2018

Hi @vipin135 ,

Decompressor algorithm is Xilinx internal proprietary information and cannot be disclosed. 

Please contact Xilinx Sales/DFAE/FAE from this https://www.xilinx.com/about/contact.html , they might guide/help on this.

Regards,
Deepak D N
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Moderator
Moderator
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Registered: ‎06-05-2013

If you need some top-level details on bitstream compression please refer to the following AR https://www.xilinx.com/support/answers/16996.html
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For more information please refer to configuration resources https://forums.xilinx.com/t5/FPGA-Configuration/Configuration-Resources/m-p/753763/highlight/true#M5891
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Visitor
Visitor
330 Views
Registered: ‎09-26-2018

I have tried BitGen compression for configuration bit stream but CR (Compression Ratio) is not good with this compression scheme.  CR is very good with PROM compression using iMpact. That is why I would like to use PROM compression instead of BitGen compression.

Thanks hj.

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Visitor
Visitor
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Registered: ‎09-26-2018

Thanks Deepak for the suggestion. I understand your point. I will contact xilinx sales for the same. 

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