Data2MEM Syntax, Data2MEM Input and Output Files

Chapter 24: Data2MEM

Data2MEM Syntax

Use the following syntax to run Data2MEM from the command line:

data2mem -bmbd infile.[bmmelfmem][options]

options can be any number of the command line options listed in the “Data2MEM Options” section of this chapter. Options need not be listed in any order. Separate multiple options with spaces. See the “Data2MEM Options” section of this chapter.

infile specifies the name of the input file. Use the -bm option to specify a .bmm file and the -bd option to specify an .mem or .elf file.

Data2MEM Input and Output Files

Data2MEM uses a number of input and output files. The following figure shows the range of files, and their input and output relationship to Data2MEM. Below is a description of each file type, and how it is consumed or produced by Data2MEM.

file.elf

file.drf

file.mem

file.bit

file.bmm

Data2MEM

updated_file.bit

file.v

file.vhd

file.mem

X10292

Figure 24-1:Data2MEM Input and Output Files

Block RAM Memory Map (.bmm) files

A Block RAM Memory Map (.bmm) file is a simple text file that has a syntactic description of how individual Block RAMs constitute a contiguous logical data space. This is a fundamental input file that Data2MEM uses to direct the translation of data into the proper initialization form. A .bmm file is created primarily manually; however, Data2MEM has facilities to generate .bmm file templates that can be customized to a specific design. A

.bmm file can also be created by automated scripting means. Because a .bmm file is a simple text file, it is directly editable. Data2MEM allows the free-form use of both slash (//) and asterisk (/*...*/) commenting styles.

Executable and Linkable Format (.elf) files

An Executable and Linkable Format (.elf) file is a binary data file that contains an executable CPU code image, ready for running on a CPU. ELF files are produced by software compiler tools. Refer to the proper software tool documentation for details on creating .elf files. Data2MEM uses .elf files as its basic data input form. Because .elf files are binary data, they are not directly editable. Data2MEM also provides some facilities for examining the content of .elf files.

368

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 Data2MEM Syntax, Data2MEM Input and Output Files, Block RAM Memory Map .bmm files

Models: 8.2i