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Old 01-17-2009, 12:53 AM   #4
Join Date: Apr 2007
Location: Hillsboro, OR
Posts: 5,785

Each controller is a separate bus, but the DV capture software must individually address a particular DV device in order to use more than one on the bus. Most don't and just "broadcast" the data on the bus, and whichever device "grabs" it does whatever.

Oh yeah, and if you daisy-chain multiple DV devices, it gets worse because the first one that "grabs" it usually will "eat" it, and that data doesn't go downstream. For example, hitting Play might start playing on the first device, and the second device in the chain never gets the command.
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