mounting non-standard serial ports with devc-ser8250.

As root, I ran this command

devc-ser8250 -b 1200 -u 3 port 1E0 &

and QNX 6.x mounted 2 serial ports in /dev: ser3 and ser4. Why did I get two?

Secondly, when I connect my line monitor to the uart starting at 1E0 I can only talk to it by writing to ser4, not ser3 as I would expect.

Thirdly, is there a command to display the settings for a port?


Try running it like this…

devc-ser8250 -u3 -b1200 0x1e0,IRQ#

You will need to provide the proper IRQ number.