[Asterisk-Users] Small office setup/using analog lines w/ Asterisk

[Kevin P. Fleming]

Andrew Kohlsmith wrote:

> Actually that is untrue.  There are four INT# lines on a PCI bus.  
> *everything* uses INTA# and relies on the chipset and motherboard to 
> correctly "wire" it up so they don't share...  I was going to ask Digium if 
> they could bring all four INT# lines into the FPGA and allow me to select 
> which INT# to use, it'd sure give a HELL of a better chance at finding a free 
> IRQ, wouldn't it?  Especially for those goddamned motherboards that DON'T 
> "cascade" the INT# lines...  

And newer boards with more intelligent APICs don't have this problem at 
all, since every slot has INTA wired to a separate APIC input :-) From 
what I understand, there are even boards out there where the INTAs are 
all wired to separate inputs, but then combined in the (less 
intelligent) APIC.