Nios® II Processor Reference Guide

ID 683836
Date 10/22/2020
Public
Document Table of Contents

3.7.9.1. Processing General Exceptions

The general exception handler is a routine that determines the cause of each exception (including the double TLB miss exception), and then dispatches an exception routine to respond to the exception. The address of the general exception handler, specified with the Nios® II Processor parameter editor in Platform Designer, is called the exception vector in the Nios® II Processor parameter editor. At run time this address is fixed, and software cannot modify it. Programmers do not directly access exception vectors, and can write programs without awareness of the address.
Note: If the EIC interface is present, the general exception handler processes only noninterrupt exceptions.

The fast TLB miss exception handler only handles the fast TLB miss exception. It is built for speed to process TLB misses quickly. The fast TLB miss exception handler address, specified with the Nios® II Processor parameter editor in Platform Designer, is called the fast TLB miss exception vector in the Nios® II Processor parameter editor.

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