Tascam FW-1884 would like to talk to Vista 64
Hi Ray,
Glad to see you have got Vista 64 working on your new motherboard. From the ASUS website, I see that the audio solution is provided by Realtek. You could try the latest driver from them (link given below) to see if that solves your problem. This is version R1.91, and was released on 2008/4/22. Also, I notice that you have 2 firewire ports available. Try using the other port. How about changing the cable? Please let me know if any of this helps.
Dwarf
Realtek