Intel® Quartus® Prime Standard Edition User Guide: Platform Designer

ID 683364
Date 12/15/2018
Public
Document Table of Contents

3.3.2.2. IRQ Mapper

Platform Designer inserts the IRQ Mapper automatically during generation. The IRQ Mapper converts individual interrupt wires to a bus, and then maps the appropriate IRQ priority number onto the bus.

By default, the interrupt sender connected to the receiver0 interface of the IRQ mapper is the highest priority, and sequential receivers are successively lower priority. You can modify the interrupt priority of each IRQ wire by modifying the IRQ priority number in Platform Designer under the IRQ column. The modified priority is reflected in the IRQ_MAP parameter for the auto-inserted IRQ Mapper.

Figure 101. IRQ Column in Platform Designer Circled in the IRQ column are the default interrupt priorities allocated for the CPU subsystem.