On Thu, Mar 09, 2000 at 12:34:23PM +0100, Gustav Schaffter wrote:
> David,
> I'm using an (old) fourport card from STB. Works fine for me.
> The ISA bus permits sharing IRQ's as long as they are on the
> *same*controller*card* but not on different cards. Of course, your
> serial port software must handle shared interupts as well.
Only if the controller card itself is designed to share those
interrupts, and then it's not a function of the ISA bus anyways. You
can't always tell which cards are designed the share the IRQ's and which
ones are not. The old Diamond IO multifunction cards were not. I'm
not sure about the newer KIA cards I use in some system, but wouldn't
try it. If the IRQs are selected by physical jumpers or switches, I
would be leary of trusting their ability to "wire or" that IRQ. If you
trace the traces from the switches to the card edge connector, I can
almost guarentee you that they don't.
> You will of course need to use setserial at the boot to setup the card.
> Regards
> Gustav
> David Kramer wrote:
> > I need to get another serial port or two on my linux box. I have one for
> > the mouse, another for my IR controller, and I would like at least one
> > more for an X10 ActiveHome controller. Ideally I would have a fourth for
> > a dial-in modem.
> >
> > If I get a normal add-on two-port serial card for ~$30-$40, could I use
> > that in addition to the two ports I have now, or are they going to
> > conflict with IRQ's?
> >
> > Real 4-port serial cards seem to be very expensive. Are there any that
> > are not? I don't need fast. Does each com port need an IRQ? That would
> > suck.
> >
> > Does anyone have experience with a particular make, model, or vendor?
> >
> > Thanks in advance.
> >
> > --
> > To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
> > as the Subject.
>
> --
> pgp = Pretty Good Privacy.
>
> To get my public pgp key, send an e-mail to: [EMAIL PROTECTED]
>
> Visit my web site at http://www.schaffter.com
>
>
> --
> To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
> as the Subject.
--
Michael H. Warfield | (770) 985-6132 | [EMAIL PROTECTED]
(The Mad Wizard) | (770) 331-2437 | http://www.wittsend.com/mhw/
NIC whois: MHW9 | An optimist believes we live in the best of all
PGP Key: 0xDF1DD471 | possible worlds. A pessimist is sure of it!
--
To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
as the Subject.
