Re: [Xastir] standards are wonderful...
Alex Carver wrote: --- On Fri, 8/21/09, mark.rice wrote: Finally, I wondered if the serial ribbon cable had the proper pin-out for the motherboard header no, it didn't. It wasn't even close, and I kick myself for not checking that. But who would make their own standard, eh? That's a little surprising considering there is a standard for the serial port pinout. It was a one-to-one mapping. Pin one of the header went to pin one of the D-shell connector. Pin 10 was to be blank and used as a polarity key with a matching plug in the connector hole. The other cable is typically to make it easy for use with IDC connectors, just clamp one on each end. I'm sure both made perfectly good sense to the engineers involved, just a different viewpoint (a perfect example of the difference between an internal and external interface ... ;) I always made a point to mark my serial cables as 'A' or 'B' just to make sure they didn't get mixed up. ... Niall ___ Xastir mailing list Xastir@lists.xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
Re: [Xastir] standards are wonderful...
--- On Fri, 8/21/09, mark.rice wrote: > Finally, I wondered if the serial ribbon cable had the > proper pin-out > for the motherboard header no, it didn't. > It wasn't even close, > and I kick myself for not checking that. But who > would make their own > standard, eh? That's a little surprising considering there is a standard for the serial port pinout. It was a one-to-one mapping. Pin one of the header went to pin one of the D-shell connector. Pin 10 was to be blank and used as a polarity key with a matching plug in the connector hole. However, I had the same experience with a motherboard using a USB header. It is five pins and is normally set up as Power, Data Minus, Data Plus, and Ground. This one motherboard has some weird arrangement that I have yet to figure out because one port works and the other doesn't. I'll have to probe it some more next time I open it to see if I can get both ports functional. ___ Xastir mailing list Xastir@lists.xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
