audio traffic in I2S mode and delay line work

I verified that the first sample that gets to the DSP chip from the codec is the right channel. This is by default in I2S mode but can be changed using different flags.

I read about the flags that configure the audio I/O trarric in the SHARC hardware manual.

I did more work on the delay line: created an imaginary audio delay line with manually entered numbers representing audio samples and given thought to an actual delay line implementation.