AN 977: Nios® V Processor Custom Instruction

ID 773194
Date 4/14/2023
Document Table of Contents

4.3.7. Setting Up the Custom Instruction Interfaces

To set up the custom instruction interfaces, follow these steps:

  1. Click Next to display the Signals and Interfaces tab. The Signals and Interfaces tab displays the interface of the synthesized HDL file.
  2. Change all signals Type to niosv_custom_instruction_subordinate.
    Note: You must include the clock input and reset input under the Nios V Custom Instruction Subordinate.
  3. Update each HDL signal to the appropriate Signal Type.
Figure 24. Component Editor – Signals & Interfaces