Have simple app on .NET CF, which reads COM. Run on a piece of iron with SirfAtlas4 get an IOException.
Friendly brothers suggest this fun:
"This has NOTHING to do with .NETCF. If there's a serial debug port, that's
done at the OS level. You'll have to see if that's enabled and change the
OS, if so, to make it work."
Neighing, thank you.
If this issue is unavoidable — then maybe there is some other way to get the railroad to give NMEA?