[FADCA] Shared IRQs

[John H. Green]

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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