Nios II Classic Processor Reference Guide

ID 683620
Date 10/28/2016
Document Table of Contents Default Cacheability

The default cacheability specifies whether normal load and store instructions access the data cache or bypass the data cache. The default cacheability is only present for data regions. You can override the default cacheability by using the ldwio or stwio instructions. The bit 31 cache bypass feature is available when the MPU is present.

Refer to the Cache Memory section for more information on cache bypass.