Nios II Classic Processor Reference Guide

ID 683620
Date 10/28/2016
Public
Document Table of Contents

3.7.7.5. Supervisor-Only Instruction

When your system contains an MMU or MPU and the processor is in user mode (status.U = 1), executing a supervisor-only instruction results in a supervisor-only instruction exception. The supervisor-only instructions are initd, initi, eret, bret, rdctl, and wrctl.

This exception is implemented only in Nios® II processors configured to use supervisor mode and user mode. Refer to the "Operating Modes" section of this chapter for more information.

Did you find the information on this page useful?

Characters remaining:

Feedback Message