Xilinx 8.2i manual DRC Syntax, DRC Input File, DRC Output File, DRC Options

Models: 8.2i

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Chapter 8: Physical Design Rule Check

R

DRC Syntax

The following command runs physical DRC:

drc [options] file_name.ncd

options can be any number of the DRC options listed in “DRC Options”. They do not need to be listed in any particular order. Separate multiple options with spaces.

file_name is the name of the NCD file on which DRC is to be run.

DRC Input File

The input to DRC is an NCD file. The NCD file is a mapped, physical description of your design.

DRC Output File

The output of DRC is a TDR file. The TDR file is an ASCII formatted DRC report. The contents of this file are determined by the command line options you specify with the DRC command.

DRC Options

This section describes the DRC command line options.

–e (Error Report)

The –e option produces a report containing details about errors only. No details are given about warnings.

–o (Output file)

–ooutfile_name.tdr

The –o option overrides the default output report file file_name.tdr with outfile_name.tdr.

–s (Summary Report)

The –s option produces a summary report only. The report lists the number of errors and warnings found but does not supply any details about them.

–v (Verbose Report)

The –v option reports all warnings and errors. This is the default option for DRC.

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Development System Reference Guide

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Xilinx 8.2i manual DRC Syntax, DRC Input File, DRC Output File, DRC Options

8.2i specifications

Xilinx 8.2i is a significant version of the Xilinx ISE (Integrated Software Environment) that emerged in the early 2000s, marking an important milestone in the world of FPGA (Field-Programmable Gate Array) development. This version introduced a slew of advanced features, technologies, and characteristics that made it an indispensable tool for engineers and developers in designing, simulating, and implementing digital circuits.

One of the standout features of Xilinx 8.2i is its enhanced design entry capabilities. This version supports multiple design entry methods, including schematic entry, VHDL, and Verilog HDL, giving engineers the flexibility to choose their preferred approach. The integrated environment provides user-friendly graphical interfaces, making it accessible for both novice and experienced users.

Xilinx 8.2i's synthesis tools have been improved to enable more efficient design compilation and optimization. The new algorithms used in this version facilitate faster synthesis times while reducing power consumption and improving performance. Furthermore, it features support for advanced FPGA architectures, which allows for the implementation of more complex designs with greater efficiency.

The implementation tools in Xilinx 8.2i include advanced place and route capabilities, utilizing state-of-the-art algorithms for optimized resource usage. These tools enable designers to make better use of FPGA resources, ensuring that designs fit within the constraints of the target device while maximizing performance.

Another key characteristic of Xilinx 8.2i is its extensive support for various Xilinx devices such as the Spartan, Virtex, and CoolRunner series. This compatibility ensures that developers can leverage the powerful features of these FPGA families, including high-speed transceivers and DSP slices.

Xilinx 8.2i also places a strong emphasis on simulation and verification. The version integrates with various simulation tools, allowing for thorough testing of the designs before implementation. This reduces the risk of errors and ensures that the final product meets specifications.

In addition, this version includes support for design constraints, enabling engineers to specify timing, area, and other critical design parameters. By accommodating constraints, Xilinx 8.2i helps in achieving reliable and efficient designs tailored to project needs.

In summary, Xilinx 8.2i is a robust software development tool that enhances the design process for FPGAs. Its comprehensive features, including multiple design entry options, advanced synthesis and implementation tools, extensive device support, and strong simulation capabilities, make it a valuable resource for engineers and developers striving for innovation in digital design.