Xilinx 8.2i manual Libraries to Search, Part Number, Ignore LOC Constraints, Llibname

Models: 8.2i

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EDIF2NGD

–l (Libraries to Search)

–llibname

The –l option specifies a library to search when determining what library components were used to build the design. This information is necessary for NGDBuild, which must determine the source of the design’s components before it can resolve the components to Xilinx primitives.

You may specify multiple –l options on the command line. Each must be preceded with – l; you cannot combine multiple libname specifiers after one –l. For example, –l xilinxun synopsys is not acceptable, while –l xilinxun –l synopsys is acceptable.

The allowable entries for libname are the following.

xilinxun (For Xilinx Unified library)

synopsys

Note: You do not have to enter xilinxun with a –l option. The Xilinx Development System tools automatically access these libraries. You do not have to enter synopsys with a –l option if the EDIF netlist contains an author construct with the string “Synopsys.” In this case, EDIF2NGD automatically detects that the design is from Synopsys.

–p (Part Number)

–ppart

The –p option specifies the part into which your design is implemented. The –p option can specify an architecture only, a complete part specification (device, package, and speed), or a partial specification (for example, device and package only).

The syntax for the –p option is described in “–p (Part Number)” in Chapter 1. Examples of part entries are XCV50-TQ144and XCV50-TQ144-5.

If you do not specify a part when you run EDIF2NGD, you must specify one when you run NGDBuild.

You can also use the –p option to override a part name in the input EDIF netlist or a part name in an NCF file.

–r (Ignore LOC Constraints)

The –r option filters out all location constraints (LOC=) from the design. If the output file already exists, it is overwritten with the new file.

Development System Reference Guide

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Page 383
Image 383
Xilinx 8.2i manual Libraries to Search, Part Number, Ignore LOC Constraints, Llibname