Bidirectionnal sound card

[Marc SCHAEFER]

Hi,

I would like to buy a bidirectionnal sound card, able to record
and play at the same time. Someone told me that the
SoundBlaster 128 PCI was hardware-wise able to do that, and
also Linux supported with this feature.

What driver is to be used, BTW ?  Is there any open-source (no cost
or not) driver fulfilling my needs ?

Thanks for any hints.