Project Properties and Options

Chapter 3: Tcl

Example:	% search “/stopwatch” -type instance

Description:	In this example, the search command is used to find all instances in
	the design.

Tcl Return:	A collection of objects that match the search criteria. If no matches
	are found, an empty collection is returned.

Note: Use the collection foreach command to list or get access to each object in a collection. See foreach (iterate over elements in a collection) for more information.

This following tables list all of the available project properties and batch tool options. The first table lists all of the project properties. The remaining tables list all of the supported batch tool options, by Xilinx synthesis or implementation tool.

Batch tool options are listed as text strings, which are distinguished by double quotes (“) on the command line. The exact string representation, as shown in Project Navigator, is required.

Table 3-6:Project Properties

Property Name	Description

device	The device to use for the project.

family	The device family to use for the project.

generated_simulation_language	The language of the generated simulation netlist.

name	Name of the project.

package	The device package to use for the project.

speed	The device speed grade to use for the project.

synthesis_tool	The synthesis tool to use for this project. The default
	tool to use is XST.

top	The top-level design module or entity.

top_level_module_type	The module type of the top-level source.

Table 3-7: XST Options

Option Name	Synthesis Tool

“Add I/O Buffers”	XST

“Bus Delimiter”	XST

“Case Implementation Style”	XST

“Case”	CST

“Constrain Placement”	XST

www.xilinx.com

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 Project Properties and Options, Search /stopwatch -type instance

Models: 8.2i

Chapter 3: Tcl

% search “/stopwatch” -type instance