You can enable or disable generation of synthesis scripts, and select the synthesis tool for which the coder generates scripts. To do so, in the Generate HDL dialog box, select the EDA Tool Scripts tab. Then select Synthesis script from the menu on the left side, and select your synthesis tool from the Choose synthesis tool drop-down menu.
|Supported Synthesis Tools|
When you select a synthesis tool, the coder:
Enables the fields in the Synthesis script pane.
Sets Synthesis file postfix to correspond with the tool you selected.
Fills in the Synthesis initialization, Synthesis command, and Synthesis termination fields with default Tcl script code for the tool.
If you select
the coder does not generate a synthesis script. The coder clears and
disables the fields in the Synthesis script pane.
You can also select
'Custom', and set the Synthesis
initialization, Synthesis command,
and Synthesis termination Tcl code fields to
generate a script that supports your tool.
You can customize the script according to your target device, constraints, etc., by modifying the Tcl code in the Synthesis initialization, Synthesis command, and Synthesis termination fields. To see these options in the Generate HDL dialog box, select the EDA Tool Scripts tab, and click Synthesis script from the menu in the left column.
The coder prints the three sections of the script in the order
shown in the dialog box. The script file is named according to the
name of your module or entity combined with the string in Synthesis
file postfix. The custom strings for each section are passed
fprintf to write each section of the synthesis
script. You can use format strings supported by the
In Synthesis initialization, you can use an implicit
argument that is the name of your top-level module or entity. In Synthesis
command, you can use an implicit argument that is the name
of the file that contains your generated HDL code.
The figure shows the Synthesis script pane, with the options set to their default values.
The coder generates a script called
project -new Hd_copy.prj add_file Hd_copy.vhd set_option -technology VIRTEX4 set_option -part XC4VSX35 set_option -synthesis_onoff_pragma 0 set_option -frequency auto project -run synthesis
You can also specify the synthesis tool and script options as
generatehdl function. For programmatic
generatehdl, see Synthesis Automation Properties.