[ale] interrupts in linux??

[Geoffrey]

Doug McNash wrote:
> As a general rule ISA card interrupts are not shareable, PCI interrupts 
> are sharable assuming the driver is written that way and there is no 
> reason it should not be. Most motherboards do have a PCI-to-ISA bridge 
> where they hang the keyboard, serial, parallel port and other "legacy" 
> devices so those are not shareable if present and enabled.

I believe that if the card driver is a module and you remove the module 
it will permit the 'sharing' of the irq.  Granted, that's not real 
sharing, but there's little real sharing going on.  Generally, shared 
irqs work when the devices are not trying to futz (technical term) with 
the irq at the same moment.

I did this with a bit of success a while back.  Simply had the modules 
toggled in and out depending on which device was needed.

> 
> The PCI BIOS will setup the IRQ's for the PCI devices and there is not 
> much you can do to change it.

Most bios will permit you to control some of this behavior.  Typically 
it's not much more then permitting or restricting a particular irq be 
used by a pci device.  I played with this a while back with an asus p200 
mb, it was a bit of black magic and finger crossing.

-- 
Until later: Geoffrey		esoteric at 3times25.net

The latest, most widespread virus?  Microsoft end user agreement.
Think about it...

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