Critical Issue
Description
You receive an Internal Error when attempting to perform an ISS simulation of designs containing the Altera Triple Speed Ethernet media access control (MAC) or SG-DMA components because the Nios II ISS does not support these components.
Resolution
Remove the Triple Speed Ethernet MAC and SG-DMA components from your system and perform ISS simulation on the simplified system. You can also simulate the design in ModelSim or test it on hardware.
Before removing the Triple Speed Ethernet MAC and SG-DMA components, make a copy of the unmodified system to ensure that you can return to the original configuration.