Critical Issue
Description
Interrupt bridges are not supported by the Nios II Embedded
Design Suite Board Support Package (BSP) tools. If interrupt requests
(IRQs) are mapped for a module to a CPU interrupt receiver port,
the BSP tools publish incorrect information to the system.h file.
IRQ IDs appear in the file with a value of -1.
Resolution
Using the information in the Qsys system IRQ map, create a
set of #define statements in a new Header File (.h).
Because a BSP tool can overwrite the system.h file
during generation, do not edit the system.h file.