On Thu, 2009-02-26 at 14:29 -0600, Robert wrote: > <snip> > breakout box. Lacking one of those, you might find the statserial > program to be of some use in figuring out what the control lines are doing. > # yum --enablerepo=dag install statserial > will install it. It has a short man page. Run with no options except > device ( # statserial /dev/ttyS0 ) will cause it to loop, indicating > status of all control signals. You can manually tweak any of the pins > with direction of "in" with a 9-volt battery or by using a paper-clip IIRC (very iffy) +/- 12 volts is needed. > jumper from one of the "out" lines. It won't be long before you can > identify the port, moving an "unknown" to "found". There are pins designated to _provide_ the correct voltage full time (on 25 pin units - unsure about 9 pin). The google will get a specification of which they are - I can't remember. > > Good luck! > <snip>