// Analog (direct connection to GPIO pad---use with caution) // Note that analog I/O is not available on the 7 lowest-numbered // GPIO pads, and so the analog_io indexing is offset from the // GPIO indexing by 7. inout [`MPRJ_IO_PADS-8:0] analog_io,

oh ok. Thanks for pointing that out. I was expecting there would be analog_io[num] connecting to pad[num]. But apparently analog_io[num] is connected to pad[num+7]