Why is the BUSY bit in the HSSI Command/Status Register not de-asserting in the Ethernet Subsystem IP when invoking SAL Commands?

Description

Due to a problem in the Quartus® Prime Pro Edition Software version 24.3, the BUSY bit in the HSSI Command/Status Register may be de-asserted in the Ethernet Subsystem IP when invoking Subsystem Abstraction Layer (SAL) Commands.

The BUSY bit in the HSSI Command/Status Register determines the status of SAL/NIOS® in the Ethernet Subsystem IP, which helps in posting SAL requests.

As the BUSY bit doesn’t go low, all NIOS/SAL involved simulations will hang.

This problem happens only in simulation and doesn’t impact hardware behavior.

Resolution

This problem is fixed beginning with the Quartus® Prime Pro Edition software version 24.3.1.