Re: [pc110] serial ports on PC110

Alan Cox (alan nospam at
Fri, 20 Mar 1998 13:52:44 +0000 (GMT)

> As I've just bought a (rediculously expensive) JetEye infrared port to
> talk to my pc110 I've started trying to get the serial ports to work

I bought a fairly cheap Adaptec airport.

> people who are running under Linux may be able to help me. When I
> boot FreeBSD it doesn't find the serial ports, though on checking the
> configuration it does find something there but the ports fail to
> reply to the interrupt check which normally implies they are on
> a different IRQ. I tried many different IRQs but none seemed to
> work. After looking through the manual it does (somewhere) say
> that they should be on 3 and (4 ?, sorry can't remember) but
> the numbers were what one would think as convential places.

The Linux driver sees them happily and reports them as on the standard
IRQ lines. Perhaps the FreeBSD driver is a bit overparanoid. I dont know
if they are real or custom logic uart emulations, nothing else I've
met has objected to them. You might want to shove a Linux boot disk in
the floppy drive and see what it sees on your PC110, then tell FreeBSD
where to look ..