>> I recently got a 4501 [...console serial isn't driving any pins...] > Could it be this issue? > http://osdir.com/ml/hardware.soekris.technical/2003-04/msg00089.html
It very well could be; thank you very much for the pointer. The measurements I made were with all other pins open-circuit and thus quite possibly triggering the automatic powerdown of the transceiver. I have comparatively little DE9 serial stuff, so I don't have any cables I'm sure are crossover; I tried a few possibilities, but I suspect they all wound up being straight through. it's quite possible that once I get a crossover cable soldered up and another serial port driving at least one input pin, everything will Just Work. I'm not sure what the "dated" means in that message. The unit I've got doesn't have anything that looks like a six-digit datestamp. There is a sticker on the back of the board with a serial number 00xxxx, but the second pair of digits is too high for it to be a datestamp. The thing is, when the cable I found didn't work, I wanted to verify which pin the Soekris was driving. When the voltmeter indicated it wasn't driving either one, I began to suspect it might be fried; I wasn't aware any serial port transceivers did auto-powerdown as sketched in that message. (It strikes me as a bad idea in general; if nothing else, it means that two such ports connected to one another may never power up, each one waiting for the other to start driving a pin first. Since this was changed, I gather Soren K. agreed with my conclusion, if perhaps not my reasoning. :-) /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML [email protected] / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B _______________________________________________ Soekris-tech mailing list [email protected] http://lists.soekris.com/mailman/listinfo/soekris-tech
