Chris Eddy <CEddyWired@AOL.COM> wrote:
> Is anyone familiar with app notes and techniques that allow the
> implementation of modem algorithms?

_The_Theory_and_Practice_of_Modem_Design_ by John Bingham

> Even if they are TI or AD app notes on DSP, I am sure that an honest effort
> can port them to PIC.  Any feedback is appreciated.

TI published a small book on implementing a Bell 212 modem on a TMS 32010.

Analog Devices has a volume on implementing V.32 on their parts.  I think
it is volume 4.

I doubt any of this will help you with the PIC, though, as the PIC just
isn't powerful enough to implement PSK or QAM modems in real time.  FSK is
much simpler and still consumes most of the PICs time.

Cheers,
Eric