Nios II Classic Processor Reference Guide

ID 683620
Date 10/28/2016
Document Table of Contents Unimplemented Instruction

When the processor issues a valid instruction that is not implemented in hardware, an unimplemented instruction exception is generated. The general exception handler determines which instruction generated the exception. If the instruction is not implemented in hardware, control is passed to an exception routine that might choose to emulate the instruction in software.

For more information, refer to the "Potential Unimplemented Instructions" section of this chapter.

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