Intel® Quartus® Prime Standard Edition User Guide: Debug Tools

ID 683552
Date 9/24/2018
Document Table of Contents

7.1. Setting Up In-System Modifiable Memories and Constants

When you specify that a memory or constant is run-time modifiable, the Intel® Quartus® Prime software changes the default implementation. A single-port RAM is converted to a dual-port RAM, and a constant is implemented in registers instead of look-up tables (LUTs). These changes enable run-time modification without changing the functionality of your design.

If you instantiate a memory or constant IP core directly with ports and parameters in VHDL or Verilog HDL, add or modify the lpm_hint parameter as follows:

In VHDL code, add the following:

lpm_hint => "ENABLE_RUNTIME_MOD = YES,
   INSTANCE_NAME = <instantiation name>";

In Verilog HDL code, add the following:

defparam <megafunction instance name>.lpm_hint =
   INSTANCE_NAME = <instantiation name>";