John Goerg <john at krwc1360.com> writes: > David Dyer-Bennet wrote: > > > Jumping 5 or 6 or 8 to 20 doesn't do anything (other than lighting the > > light associated with 5, 6, or 8 on the breakout box). But it isn't > > detected either by my program or by the UPS monitoring programs I've > > tried. When I run my monitoring program it reports one value, then > > instantly > > another value, then never reports a change again. The initial change > > is *before* I do anything to make a change at the breakout box. It > > very probably represents some sort of bug in the program, possibly > > even a bug that makes the whole test invalid; I just haven't figured > > out what it *is* yet. > > If I control/c out, and then run it immediately again, I get exactly > > the same behavior (and exactly the same values), which I take as > > additional evidence that the output isn't responding to reality. > > Try this David, tie pins 4 + 5 to the computer together and test again. > Most of the newer computers (post Pentium) need 4+5 jumpered or 5 > connected to something else for the serial port to function. I > would'nt think you would need this just to scan the port but > maybe........... Still nothing (and on a different computer from the first try, so different serial port). I did find a couple of bugs in my monitor program (in particular, the initial apparent change was a bug), but it hasn't made any difference yet. Oh; are your "4" and "5" for a 9-pin or a 25-pin connector? Since they're RTS and CTS on 25-pin, I'm guessing that's what you mean. That's what I tried, anyway. Neither of them has any signal on it according to the breakout box, either. -- David Dyer-Bennet, dd-b at dd-b.net / New TMDA anti-spam in test John Dyer-Bennet 1915-2002 Memorial Site http://john.dyer-bennet.net Book log: http://www.dd-b.net/dd-b/Ouroboros/booknotes/ New Dragaera mailing lists, see http://dragaera.info