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Xilinx 8.2i Object get object information, Sizeof show the number of objects in a collection

Models: 8.2i

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Chapter 3: Tcl

R

property_name and property_value specify the property name and value for all of the collection variables in the current ISE project. There are two available property settings for the collection set command, they are:

display_line_limit–specifies the number of lines that can be displayed by a collection variable. This property setting is useful for very large collections, which may have thousands, if not millions of objects. The default value for this property is 100. The minimum value is 0. There is no maximum value limit for this property.

display_type–instructs Tcl to include the object type in the display of objects from any specified collection variable. Values for this property are true and false. By default, this option is set to false, which means object types are not displayed. See the example below.

Example:

% collection set display_type true

 

 

Description:

In this example, the collection set command is used to set the property

 

name and value for all collection variables in the project.

 

display_type is the name of the property setting.

 

true specifies the value for the property.

Tcl Return:

The previous value of the property.

sizeof (show the number of objects in a collection)

The collection sizeof command returns the number of objects in the specified collection.

%collection sizeof <collection_variable>

collection is the name of the Xilinx Tcl command.

sizeof is the name of the collection subcommand.

collection variable specifies the name of the collection for Tcl to return the size of.

Example:

% collection sizeof $colVar

 

 

Description:

In this example, the collection sizeof command is used to return the

 

size of the collection, which is referenced by the colVar collection

 

variable.

Tcl Return:

An integer return of the number of items in the specified collection.

object (get object information)

The object command returns the name, type, or property information of any Xilinx Tcl object in the current ISE project. You can specify a single object or an object from a collection of objects.

%object <subcommand>

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Development System Reference Guide

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Xilinx 8.2i Object get object information, Sizeof show the number of objects in a collection, Collection sizeof $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.