I have an Opti 82c930 Sound card. It is set up in half duplex mode. How can you change it to be full duplex? In the readme.txt file it says to
FULL-DUPLEX DUAL-DMA SUPPORT

To enable Dual-DMA channel operation for simultaneous playback and
recording, please ensure the following:

1. The DMA resource settings under Device Manager must be different
and paired as follows:

Playback DMA: 0 1 3
Recording DMA: 1 0 0

2. The frequency format (eg. 11KHz, 22KHz..) must be the same during
simultaneous playback and recording.

How is this done?

Thanks,