Connecting to a USB serial port

Robert Fitzpatrick lists at
Sat Jan 6 17:25:28 UTC 2007

I have a Keyspan USB serial port on my FreeBSD 6.1 box and trying to 
connect from a Linux box to the machine. I'm using minicom and not sure 
of the settings that should be used. I see the following in dmesg...

sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on 
sio0: type 16550A

Is this the USB serial port? There is no other serial port avaialble on 
the server, but could be something in the board, not sure. Someone else 
told me they used this same serial port on their box and I wanted to try 
it since the box does not have an available PCI slot or serial port 
available. My question is whether this works just like a regular COM 
port? I wanted to be sure I should be handling things the same as I 
would with a regular serial port. I have ttyd0 enabled and showing up...

657  ??  I      0:00.00 /usr/libexec/getty std.9600 ttyd0

That seems to do the trick with my other BSD servers that have regular 
serial ports, but minicom doesn't want to find it using 9600 8N1 settings.


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