Nios II Classic Processor Reference Guide

ID 683620
Date 10/28/2016
Document Table of Contents The DBL Flag

During a general exception, the processor sets DBL to one when a double TLB miss condition exists. Otherwise, the processor clears DBL to zero.

The DBL flag indicates whether the most recent exception is a double TLB miss condition. When a general exception occurs, the MMU sets DBL to one if a double TLB miss is detected, and clears DBL to zero otherwise.