Note the ordering of the how the Concat block vectorizes the interface and connects each interrupt to the ARM GIC.
The IDs will be available in the Export to SDK xparameters.h file.
2013.4 and earlier software versions example:
Concat IN0[0:0] is connected to IRQ_F2P => ARM GIC ID 91.
Concat IN1[0:0] is connected to IRQ_F2P => ARM GIC ID 90.
2014.1 and later:
Currently, the Concat block is planned to be modified to order its inputs in incrementing order to start from the lowest IRQ_F2P and GIC ID of 61 and increment instead.
Automatic upgrade functionality is planned for existing 2013.4 and earlier designs to maintain the existing ordering with the new Concat block functionality.