[FADCA] Shared IRQs

Thu, 22 Apr 2004 23:59:24 -0400

I need some more multiple port cards. What has anyone found that are
available that will work with FPAC running under DOS?

Russ

----- Original Message ----- 
From: "John H. Green" <[email protected]>
To: <[email protected]>
Sent: Thursday, April 22, 2004 11:33 PM
Subject: Re: [FADCA] Shared IRQs

> Hi
>      Fpac does not like to share irq except for the second port on a
> drsi type card. SAD, but true. This has not been a problem so far as we
> have found 4 port cards that have access to all irq's or used old ide
> controllers that have multiple irq's for the serial ports. Actually, if
> you want to run the port speed at 19.2k ( we do all 9600b trunks) you
> need a newer card with 16550 uarts anyway so the access to more irq's
> comes along with it..
> We do have irq 9 working at two switches down south.. Boca Raton and
> West Palm Beach both have ports using irq 9.
> Some old bios slave irq 9 to 2 (I think) so maybe this could be the
problem.
> 73  John
>
> Charles S Schuman wrote:
>
> > Last week I added a old two port Serial board to the "box". As soon as
> > I configured it into the FPAC system it's
> > companion port stopped working. By companion port I mean the port that
> > shares the IRQ. The ports work w/ Buxterm,
> > but that uses only one port at a time. A second card yealded the same
> > results. Since these cards are OLDes there is no way to
> > move the IRQ to anything other than 4 or 3. So... how do we deal with
> > ports that have to share IRQs?
> >
> > Moving right along  I grabbed up a modern PCI card w/ two ports. It
> > configures itself, with a DOS utility, to FCE0h/ FCE8h  IRQ 9.
> > You would n't believe what happen when you try to use those
> > adddresses! FPAC starts up normally & everthing is cool  - til
> > you try to use the port. The screen goes black & it's down hill from
> > there.
> >
> > I guess I should stick to the beaten path but, at my house it's just
> > the way things go. :-\
> >
> >
> >
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>
>
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