Command Line Syntax, Command Line Options

Chapter 1: Introduction

Command Line Syntax

Command line syntax always begins with the command line program name. The program name is followed by any options and then file names. Use the following rules when specifying command line options:

•Enter options in any order.

•Precede options with a hyphen (-) and separate them with spaces.

•Be consistent with upper case and lower case.

•When an option requires a parameter, separate the parameter from the option by spaces or tabs. For example, the following shows the command line syntax for running PAR with the effort level set to medium:

♦Correct: par -ol med

♦Incorrect: par -ol med

•When using options that can be specified multiple times, precede the parameter with the option letter. In this example, the -l option shows the list of libraries to search:

♦Correct: -l xilinxun -l synopsys

♦Incorrect: -l xilinxun synopsys

•Enter parameters that are bound to an option after the option.

♦Correct: -fcommand_file

♦Incorrect: command_file -f

Use the following rules when specifying file names:

•Enter file names in the order specified in the chapter that describes the command line program. In this example the correct order is program, input file, output file, and then physical constraints file.

♦Correct: par input.ncd output.ncd freq.pcf

♦Incorrect: par input.ncd freq.pcf output.ncd

•Use lower case for all file extensions (for example, .ncd).

Command Line Options

The following options are common to many of the command line programs in the Xilinx Development System.

–f (Execute Commands File)

For any Xilinx Development System program, you can store command line program options and file names in a command file. You can then execute the arguments by entering the program name with the –f option followed by the name of the command file. This is useful if you frequently execute the same arguments each time you execute a program or if the command line command becomes too long.

You can use the file in the following ways:

•To supply all the command options and file names for the program, as in the following example:

par -fcommand_file

command_file is the name of the file that contains the command options and file names.

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Development System Reference Guide

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.

Xilinx 8.2i manual Command Line Syntax, Command Line Options, Execute Commands File, Introduction

Models: 8.2i