Nios II Classic Software Developer’s Handbook

ID 683282
Date 5/14/2015
Public
Document Table of Contents

8.5.4. Software Exception Funnel

Software exceptions can include unimplemented instructions, traps, and miscellaneous exceptions.

Software exception handling depends on options selected in the BSP. If you have enabled unimplemented instruction emulation, the software exception funnel first checks whether an unimplemented instruction caused the exception. If so, it emulates the instruction. Otherwise, it handles traps and miscellaneous exceptions.