[LinuxPPS] Debugging the pps

[reg at dwf.com]

> Another info I may need,
> 
> if i try to connect the pps to the parallel port, i assume i need to 
> connect to the ACK pin?
> is there any special requirements in device node / links creation
> Is there any special requirements in pulse polarity
> 

My recollection is that the Pulse Polarity for Serial Line (DCD) and
the Parallel Port (ACK) are the opposite of one another.
-- 
                                        Reg.Clemens
                                        reg at dwf.com