[NTLUG:Discuss] Re: Disabling onboard sound.

[Kevin E. Ivey]

Steve Baker wrote:

> No,no,no - the *motherboard* is a Soyo SY-7VCA with some kind of no-name
> on-board sound chip.  I want to DISABLE that so that I can use the
> Ensoniq board which I had working just fine in my older motherboard - but
> which is no longer working in the new motherboard.
> 
> I *doubt* that it's a conflict between other boards and the Ensoniq because
> all I did to upgrade this PC was to swap out the motherboard and CPU.  All
> the peripheral cards are exactly the same as before.
> 
> I hadn't thought of swapping PCI slots - I thought PC's were free of those
> issues these days.  Wasn't that a purely ISA-bus issue?
> 
> ----------------------------- Steve Baker 

Howdy,

PCI controlers will share the four PCI interrupts (INTA#, INTB#, INTC#,
INTD#) and map them to ISA interrupts IRQ 3,4,5,.... etc.

Cards which use single function PCI chips that can use only ONE
interrupt must use and share INTA#.

Some motherboards will exclude interrupts for certain PCI slots.

Therefore, by moving a PCI peripheral card to another PCI slot MAY
possibly free an interrupt and allow that card to function without
conflict.

On my Asus board, the first PCI slot is always empty because it shares
the interrupt with the AGP slot which is occupied by my graphics
processor.

On-board sound devices are on the same PCI bus as the peripheral slots
and are subject to all the same INT# sharing stuff.

It's funny this came up just now.  I was just reconfiguring my BIOS to
eliminate a PCI interrupt conflict with my Ensoniq es 1371 PCI sound
card.

Sorry, without being familiar with your motherboard's BIOS, I cant help
with disabling the on-board sound.

Keep banging away at it and keep askin questions............

Kevin