BSDLAnno File Composition, Entity Declaration

BSDLAnno File Composition

–intstyle (Integration Style)

–intstyle {ise xflow silent}

The –intstyle option reduces screen output based on the integration style you are running. When using the –intstyle option, one of three modes must be specified: ise, xflow, or silent. The mode sets the way information is displayed in the following ways:

–intstyle ise

This mode indicates the program is being run as part of an integrated design environment.

–intstyle xflow

This mode indicates the program is being run as part of an integrated batch flow.

–intstyle silent

This mode limits screen output to warning and error messages only.

Note: The -intstyle option is automatically invoked when running in an integrated environment, such as Project Navigator or XFLOW.

BSDLAnno File Composition

Manufacturers of JTAG-compliant devices must provide BSDL files for those devices. BSDL files describe the boundary scan architecture of a JTAG-compliant device, and are written in a subset language of VHDL. The main parts of an IEEE1149 BSDL file follow, along with an explanation of how BSDLAnno modifies each section.

Entity Declaration

The entity declaration is a VHDL construct that is used to identify the name of the device that is described by the BSDL file.

For example (from the xcv50e_pq240.bsd file): entity XCV50E_PQ240 is

design_name.[ncd/pnx]

BSDLAnno changes the entity declaration to avoid name collisions. The new entity declaration matches the design name in the input .ncd or .pnx file.

Generic Parameter

The generic parameter specifies which package is described by the BSDL file.

For example (from the xcv50e_pq240.bsd file):

generic (PHYSICAL_PIN_MAP : string := "PQ240" );

BSDLAnno does not modify the generic parameter.

Development System Reference Guide

www.xilinx.com

279

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 BSDLAnno File Composition, Entity Declaration, Generic Parameter

Models: 8.2i

BSDLAnno File Composition

–intstyle (Integration Style)

BSDLAnno File Composition

Entity Declaration

Generic Parameter

8.2i specifications