User guide

System Generator for DSP User Guide www.xilinx.com 253
UG640 (v 12.2) July 23, 2010
Specifying Xilinx Tool Flow Settings
The Hardware Co-Simulation Settings dialog box, shown below, allows you to specify
options files other than the default options files provided by the compilation target.
Parameters available on the Hardware Co-Simulation Settings GUI are:
• Implementation Flow: Specifies the options file that is used by the implement flow
type. By default, System Generator will use the implement options file that is
specified by the compilation target.
• Configuration Flow: Specifies the options file that is used by the config flow type. By
default, System Generator will use the config options file that is specified by the
compilation target.
The Xilinx ISE® software includes several example XFLOW options files. From the base
directory of your Xilinx ISE software tree, these files are located under the directory
xilinx\data. Three commonly used implementation options files include:
• balanced.opt
• fast_runtime.opt
• high_effort.opt
Note:
It is possible to define options files that may cause errors in the System Generator hardware
co-simulation flow. As a result, it is typically a good idea to make backup copies of the default options
files before modifying them. In addition, the configuration options file should be edited with caution, as
most FPGA hardware boards have specific configuration parameter requirements.