R

Tcl Commands for Advanced Scripting

type (type of object)

The object type command returns the type of any Xilinx object.

%object type <object_name>

object is the name of the Xilinx Tcl command.

name is the name of the object subcommand.

object_name specifies the object to return the type of. The object name will always be a Tcl variable. The set command is used to create a Tcl variable, as shown in the following example.

Example:

% set colVar [search * -type instance]

 

% object type [collection index $colVar 1]

 

 

Description:

In this example, the set command is first used to create the colVar

 

collection variable. The nested search command defines the value of

 

the collection variable.

 

In the second line, the object type command is used to get the type

 

information for the object in the collection. The collection index

 

command defines which object to get, where:

 

$colvar specifies the collection to get the object from.

 

1 specifies the index into the collection. In this case, the second object

 

in the collection is returned because index values start at 0. See the

 

collection index command for more information.

 

 

Tcl Return:

The type of the object as a text string.

 

 

search (search and return matching objects)

The search command is used to search for specific design objects that match a specified pattern.

search <pattern_string> [-exactmatch][-matchcase][-regexp][-type <object_type>]

search is the name of the Xilinx Tcl command.

pattern_string specifies a string to be used for the search. In Tcl, a string is distinguished on the command line with double quotes (“). This string may contain regular expressions.

-exactmatchspecifies that any matches found by the search, should match the pattern string exactly.

-matchcasespecifies that the search is case-sensitive.

-regexpspecifies that the pattern string uses regular expressions. If not specified, the matching is simple matching.

-type <object_type> specifies what type of design objects to search for. Supported search types are partition and instance.

Development System Reference Guide

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Xilinx 8.2i manual Search search and return matching objects, Type type of object, Object type collection index $colVar
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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.
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