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Anonymous
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Where can I get documents about RPM ,DIRT technology used in FPGA editor?

who can do me a faver? thank you.

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Moderator
Moderator
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Registered: ‎01-15-2008

check the following link for info about dirt usage

 

http://www.xilinx.com/support/answers/35556.html

 

Also check the discussion in the following link

http://forums.xilinx.com/t5/Implementation/How-I-can-understand-a-route/m-p/341349/highlight/true#M6587

 

--Krishna

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Registered: ‎01-15-2008

For RPM related following AR will be helpful

 

http://www.xilinx.com/support/answers/51602.html

 

--Krishna

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Scholar
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Registered: ‎06-14-2012

FPGA Editor can be used to manually modify and existing routed design (.ncd). The documentation is here:

http://www.xilinx.com/support/documentation/sw_manuals/help/iseguide/mergedProjects/fpga_editor/fpga_editor.htm

 

See Design Flows/Placing and Routing Critical Components

See Procedures/Adding and Deleting Components, Nets

 

After saving the NCD edits you would need to generate a new bit file

 

In addition, 

You can also try using RPM instead of Hard macros. These are handled effectively.

 

There's quite a bit of RPM macro documentation in the Constraint User Guide:

http://www.xilinx.com/support/documentation/sw_manuals/xilinx11/cgd.pdf

 

RLOC is the basic building block that defines relative location of the elements. The RLOC'd elements will group by default within a hierarchy or you can use U_SET or HU_SET to define the grouping. RLOC_ORIGIN will lock the macro to a specific location. You can add BEL constraints if necessary to further control the packing within a slice.

 

XAPP416 is old but still contains relavent information about RPM macros:

http://www.xilinx.com/support/documentation/application_notes/xapp416.pdf

 

Hope this helps.

 

Regards

Sikta

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