Can’t select a Peripheral on a DSP Farm in the Hardware Setup window in Pro Tools on a PCI system. Interface choices are greyed out.
When changing interfaces on a DSP Farm card, you must use the “Playback Engine” dialog (not the “Hardware” dialog) to select/remove the interface. This is to ensure that the session gets closed and reopened so that the proper I/O selections appear in the input/output pop-ups. Also, when a peripheral is enabled on a DSP Farm, 6 mixer channels on that Farm’s first DSP chip must be allocated, leaving a maximum 30×2 mixer on that chip. This means that DSP might need to be rearranged on the card.
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