sound card requirements?

All,

What is the preferred architecture for a linrad sound card? How 
effectively is it abstracted by OSS or ALSA?

My current card a  Intel Corporation 82801DB/DBL/DBM. This apparently 
does not support simultaneous input and output. I am not sure if this is 
a hardware, driver, or configuration issue. Does anyone have any 
information on this or other cards?

Thanks - Dan

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