Intel® Quartus® Prime Standard Edition User Guide: Third-party Synthesis

ID 683796
Date 9/24/2018
Document Table of Contents

2.9.4. Instantiating Black Box IP Functions With Generated Verilog HDL Files

You can use the syn_black_box or black_box compiler directives to declare a module as a black box. The top-level design files must contain the IP port mapping and a hollow-body module declaration. You can apply the directive to the module declaration in the top-level file or a separate file included in the project so that the Precision Synthesis software recognizes the module is a black box.
Note: The syn_black_box and black_box directives are supported only on module or entity definitions.

The example below shows a sample top-level file that instantiates my_verilogIP.v, which is a simplified customized variation generated by the IP Catalog and Parameter Editor.

Top-Level Verilog HDL Code with Black Box Instantiation of IP

module top (clk, count);
   input clk;
   output[7:0] count;

   my_verilogIP verilogIP_inst (.clock (clk), .q (count));

// Module declaration
// The following attribute is added to create a
// black box for this module.
module my_verilogIP (clock, q) /* synthesis syn_black_box */;
   input clock;
   output[7:0] q;