Generate AX. 25 Modem signals with a PIC.

[skimask]

Yes I can use the XR2206 or even the FX604 or FX614, guys are doing it all with one single 16F84 and 16F628.

BR
Pic Toy

So what you're saying is...(gotta see if I'm getting this right or not)...

A serial line input....regular ol' RS232 type serial data type stuff...

4 bit ladder output....Port D0-D3 for example...

Serial input is low, output on 4 bit ladder is effectively a 'sine' wave at 1200hz...
Serial input is high, output on 4 bit ladder is a 'sine' wave at 2200hz?

Standard ol' Bell202 (was it the 202?) modem type stuff yes?