PCI Serial Port testing

[Nils Kassube]

Karl Larsen wrote:
>          My question is, how do I test this serial port? I am not
>  sure which port is being used, /dev/ttyS0 - /dev/ttyS3. I want to
>  send something from the computer side to the serial port but don't
>  know how to do it.

setserial -g /dev/ttyS*

should give you the information which port is found by the kernel. Only 
the port with an entry "UART: 16550A" (the number may be different 
depending on the chip) is used. If it says "UART: unknown" for a 
particular port, that port isn't available. You can use the program 
minicom on both ends to test the comunication.


Nils