Re: Serial ports on PCI card?

[Michael Lorenz <macallan%netbsd.org@localhost>]

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Hello,

On Aug 18, 2008, at 6:35 PM, John Klos wrote:

> For some reason, I can't for the life of me remember how "com"  
> ports correspond to ttys in /dev/ in NetBSD. I thought the first  
> serial port was tty00, the second tty01, and so on, but on a  
> Motorola StarMax with two motherboard serial ports, two 16550-type  
> serial ports on a PCI card aren't working as tty02 and tty03 (nor  
> any of the other ttys I've tried).
>
> The ports are properly recognized:
>
> puc0 at pci0 dev 14 function 0: NetMos NM9835 Dual UART (com, com)
> com0 at puc0 port 0: interrupting at irq 24
> com0: ns16550a, working fifo
> com1 at puc0 port 1: interrupting at irq 24
> com1: ns16550a, working fifo
>
> Any idea which ttys correspond to these ports? And any suggestions  
> for remembering whatever the new scheme is?

Use mknod -l to find out which major number corresponds to the com  
driver. You'll probably have to create /dev/ entries by hand since  
onboard serial ports on Macs are usually zs, not com, and thus use a  
different major number.

have fun
Michael

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